Data from the

NATIONAL VITAL STATISTICS SYSTEM

Series 20

Number 12

A Studyof InfantMortality

FromlinkedRecords

By Birth Weight,Period of Gestation,

and Other Variables

United States, 1960 Live-Birth Cohort

Mortality experience of the 1960 live-birth cohort during the first

year of life, by birth weight, period of gestation, age of mother,

color, sex, plurality, and age at death.

DHEW Publication No. (PHS) 79-1055

U.S. DEPARTMENT OF HEALTH, EDUCATION, AND WELFARE

Public Health Service

Office of Health Research, Statistics, and Technology

National Center for Health Statistics

Hyattsville, Md. May 1972
Vital and Health Statistics-Series 20-12

First issued as DHEW Publication F!o.(HSM) 72-1055

NIay 1972
NATIONAL CENTER FOR HEALTH STATISTICS

DOROTHY P. RICE, Director

ROBERT A. ISRAEL, Deputy Director

JACOB J. FELDMAN, Ph.D., Associate Director for Analysis

GAIL F. FISHER, Ph.D., Associate Director for the Cooperative Health Statistics System

ROBERT A. ISRAEL, Acting Associate Director for Data Systems

JAMES T, BAIRD, JR., Ph.D., Associate Director for International Statistics

ROBERT C. HUBER, Associate Director for Management

MONROE G. SIRKEN, Ph.D., Associate Director for ~athematical Statistics

PETER L. HURLEY, Associate Director for Operations

JAMES M. ROBEY, Ph.D., Associate Director for Program Development

PAUL E. LEAVERTON, Ph.D., Associate Director for Research

ALICE HAYWOOD, Information Officer

Library of Congress Catalog Card Number 72-60078
~CONTENTS

.

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Description of the Study . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Limitations and Qualifications of the Data . . . . . . . . . . . . . . . . . . .

Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Birth Weight, Color, Sex, and Age at Death . . . . . . . . . . . . . . . . .

Period of Gestation, Color, Sex, and Age at Death . . . . . . . . . . . . .

Birth Weight, Age of Mother, Plurality, Color, and

Age at Death . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bi~thWeight, Period of Gestation, Color, and Age at Death . . . . . . . . .

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Listof Detailed Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page

1

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...

Ill
SYMBOLS

Data not available---------------------------------------- ---

Category not applicable ------------------------------- . . .

Quantity ----

Qu~tity

. . ... ..............................................

more than Obut less than 0.05 ----- 0.0

Figure does not meet standards of

reliability or precision ------------------------------ *
A STUDY OF INFANT MORTALITY

FROM LINKED RECORDS

BY BIRTH WEIGHT, PERIOD OF GESTATION,

AND OTHER VARIABLES

Robert J. Armstrong, M.S., Chie& Mortality Statistics Branch

INTRODUCTION

Based on figures supplied by the U.S. Bureau

of the Census,l~z the infant mortality

rate in the United States in 1900 was 97.3

deaths per 1,000 live births. Thus, at the turn of

the century, about 10 percent of all liveborn

infants died during the first year of life. The

infant mortality rate fell rapidly during the first

half of the century, reaching a level of 29.2 per

1,000 live births in 1950, a decrease of about 70

percent. When the relatively rapid decline experienced in the first half of the century was not

sustained during the next decade, considerable

attention was drawn to this changes ‘T The

apparent leveling off of the infant mortality rate

revived interest in a more detailed analysis of the

variables related to infant mortality than can be

made from the information recorded on the

death certificate alone; many factors affecting

an infant’s chances of survival are found only on

his birth certificate. Such factors as weight at

birth, period of gestation, age of mother, and’

plurality should be analyzed in conjunction with

the information’ recorded on the death certificatee.

Following this period in the 1950’s in which

the infant mortality rates were relatively stable,

they began to decline again, slowly at first, but

since 1965 the rate of decline has increased

somewhat. However, it still does not match the

decline that occurred during the first half of the

century.

The infant mortality rate, as shown in official

vittil statistics, is derived from two independent

sets of records; the numerators are based on

counts derived from death certificates and the

denominators are based on counted live-birth

certificates. Both of these sets of records relate

to events occurring in a given calendar year.

Each set of records is tabulated separately and

the number of infant deaths is divided by the

number of live births to produce the infant

mortality rate. Infant mortality rates can be

computed in this manner only for characteristics

which appear on both records.

Infant deaths are reported on the same

certificate as are all other deaths; therefore, no

information is available for them on variables

such as age of mother or birth weight. For this

reason it is not possible to compute infant

mortality rates for these variables in the usual

way. To study the effect that these characteristics have on infant mortality, the death records

for specific individuals must be linked to the

birth records for the same individuals, and the

data for the infant deaths and live births must be

tabulated according to the desired variables. This

type of analysis may point out subgroups of the

population that are at a greater risk of dying

than the overall population, and this in turn may

suggest certain preventive measures that can be

taken. It may also indicate fruitful avenues for

further investigation.

Since data of this type are rarely collected

and are of undeniable value in answering questions that are difficult if not impossible to

resolve in any other way, the National Center

for Health Statistics (NCHS), cooperatively with

the State offices of vital statistics, developed a

file of linked infant death and live-birth records

for the 1960 cohort of liveborn infants. This

report is one of a group of reports analyzing the

mortality experience in the first year of life of

the 1960 live-birth cohort as determined from

this file of linked records. It presents data for

the United States and examines the effect that

the following variables have on infant mortality: birth weight, period of gestation, age at

death, color, sex, plurality, and age of mother.

1
Although the data which form the basis of

this report concern mortality among infants

born a number of years ago, there was relatively

little change in the rates of infant mortality

between 1960 and 1965. Since 1965 there has

been a steady but modest drop amounting to a

few percentage points a year. Furthermore, the

types of data presented in this report are

relatively independent of time, and therefore the

fact that the rates are based on the 1960

live-birth cohort is thought to be of little

consequence.

DESCRIPTION OF THE STUDY

In 1959 the National Office of Vital Statistics queried the States to determine whether

the y would be willing . to participate in a

study of infant mortality which would identify

all deaths under 1 year of age among the cohort

of infants born alive in the United States in

1960. In time, most of the States agreed to

make the necessary searches, and arrangements

were made to complete the searches in the

nonparticipating States through other means.

The States were asked to supply copies of the

linked death and Iive-birth certificates for

infants who were born in 1960 and died under 1

year of age either in 1960 or in 1961. In

compiling the national file of linked records, a

number of searches were required. The search

for the certificates in question was made in the

official permanent files in the States where the

infants died, in other States for infants who

moved across State boundaries between the time

of birth and death, and at NCHS using microfilm

copies of certificates and computer tapes of

statistical records. Upon completion, a nationwide file of linked infant death and live-birth

records had been compiled. In addition to the

107,038 linked records, there were 2,293 infant

death records for which no birth records could

be found, and 530 linked records supplied by

the Slates for which no record could be found at

NCHS. A more complete discussion of the

methodology of the study is given in an earlier

report of this series.g

aThe National Office of Vital Statistics became part of the

National Center for Health Statistics (NCHS) in the fall of 1960.

LIMITATIONS AND QUALIFICATIONS

OF THE DATA

After the matching procedure was completed,

there were three files of records: (1) a file of

107,038 linked infant death and live-birth

records, (2) a file of 2,293 infant death records

for which neither the State nor NCHS could

locate a birth record, and (3) a file of 530

matched infant death and birth records from the

States for which NCHS had no records. The file

of 107,038 linked records is the basis of this

study. Although the 530 matched records represent a bona fide record of infants who died

under 1 year of age and who were born in the

United States in 1960, they were not added to

the major file of linked records because the data

available for that group were incompatible with

those of the major files

The 2,293 unlinked records and the 530

incompatible records represent 2.6 percent of

the total file of deaths of infants born in 1960.

For white infants 2.2 percent of the records

were excluded, and for the remainder of the

population the comparable figure was 3.7 percent. The degree of success of the matching

procedures obviousIy had an effect on the

quality of the statistics presented in this report,

The failure to match all records and the failure

to include the 530 linked records caused the

mortality rates in this report to be understated.

If these 2,823 records had been included, the

infant mortality rate for the United States

would have been 25.8 deaths per 1,000 live

births, or about 2.8 percent higher than the rate

of 25.1 based on the linked records alone.

A new set of punchcards containing data

from both the live-birth and death certificates

was prepared for this study. This introduced

some inconsistencies with published data even

though the same instruction mtinual was used in

both cases. Some of the inconsistencies became

apparent when the data were tabulated. Problems of this sort were identified as to geographic

area, then the microfilm tapes were retrieved

and the data corrected. It is recognized, however, that other errors of lesser degree may exist

in the data that have gone undetected and consequently remain uncorrected. The major cause

of errors was an inconsistency in selecting the

certificate number for punching for States that

2
did not use a single sequential numbering system

for the entire State for the calendar year 1960.

Use of incorrect certificate numbers resulted in

linkage failures in some of the computer operations used in the processing. Wherever these

were detected, they were corrected by manually

searching the microfilm.

Another limitation of the data stems from the

fact that not all birth records were coded by

NCHS for 1960. For that year, every second

live-birth certificate for each State was coded,

yielding a 50-percent systematic sample. Tabulated frequencies were doubled to get estimates

of the number of live births by most variables.

However, all linked infant death and live-birth

records were included, whether or not the

corresponding birth record fell into the sample.

The usual method of calculating the infant

mortality rate by age at death is to divide the

number of deaths in the age interval by the

number of live births. When the age interval is

one that does not begin at birth, the use of all

live births as the divisor results in rates that are

slightly too low since some deaths have already

occurred among these live births. In most cases

there are not enough of these deaths to significantly affect the rates. However, whenever the

mortality rates are extremely high immediately

after birth, as is the case with low birth weight

infants, the age-specific rates at later ages may

be markedly affected.

Therefore whenever “rates” that include age

at death as a variable have been shown in the

tables of this report, they have been calculated

twice; one set of rates is based on the number of

live births and the other on the number of

survivors alive at the beginning of each age

interval. To avoid confusion in both the text and

the tables, the set based on live births have been

termed “rates,” while those based on survivors

h:wc been called “probabilities of dying,” or

rnmcl)’ “probabilities.” Tecllnicdly both of

these sets of rates arc probabilities since they are

based on the uctual population at risk in each

case. The probability of dying is the more

accurate of the two measures of mortality since

it is based on the actual population at risk. The

infant mortality rate is merely an estimate of the

probability of dying during the first year of life

and is used primarily because the actual population at risk is usually not known. Infant mortality rates are usually based on the number of

infant deaths and live births that occur in the

same calendar year. For this reason the rates

presented m this report should not be expected

to agree exactly with the rates that were

published covering the year 1960.

ANALYSIS

Birth Weight, Color, Sex, and Age at Death

Characteristics of live births. –The vast majority of children born in 1960 weighed over 2,500

grams at birth. In fact, only 7.8 percent weighed

2,500 grams or less (table A). However, 59

percent of all infant deaths were contributed by

this small group of low birth weight infants.

The birth of a liveborn infant weighing 1,000

grams or less was a very infrequent event (only

0.6 percent of all live births). Each 500-gram

increment in birth weight brought a iharp

increase in the proportion of children born, with

the result that nearly two-thirds of the immature

(low birth weight) births fell in the weight group

2,001-2,500 grams.

The area of peak concentration of births was

between 2,501 and 4,000 grams. The first

500-gram group in this interval (2,501-3,000)

contained 18.5 percent of all births, while

almost two-thirds weighed 3,001-4,000 grams.

Only a comparatively small proportion of births

(1.6 percent) weighed 4,501 grams or more at

birth.

White babies weighed on the average 180

grams more than babies of other races (table A).

This difference is considerably larger than the

50-gram difference found by Shapirog in 1950.

The overall distribution of birth weights by

color is notably different for white and other

infants (table A). A greater proportion of infants

of races other than white were born at the

immature weights where the major problems of

obstetric and pediatric care exist. Infants weighing 2,500 grams or less represented6.8 percent

of all white live births as compared with 12.9

percent for all other infants.

Comparison of the percentages oi white and

all other births at weights around the modal

groups for the distributions also reveal some

variation. For both, the highest proportion of

births occurred at 3,001-3,500 grams. However

for whites, the second largest percentage of

births occurred in the next heavier weight group

3
Table A. Percentage distribution of live births,by birth weight,lcolor, and sex

Color and sex

Total . . . .

Male . . . . . . . .

Famale . . . . . .

White . . . . .

Male ...,....

Female . . . . . .

Allothar . . . .

Male . . . . . . . .

Female . . . . . .

II Birth weight

Total

1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to to to to to to grams

or 1,500 2,000 2,500 3,000 3,500 4,000 4,500 or

less grams grams grams grams grams grams grams mora

Percentage distribution

100.0 0.6 0.7 1.5 5.1 18.5 36.0 26.8 7.5 ‘1.6

100.0 0,6 0.7 1.4 4.5 15.8 36.3 29.5 9.2 2.0

100.0’ 0.6 0,6 1.5 5.7 21.3 39.7 23.9 5.6 1.0

100.0 0.5 0.6 1.3 4.5 17.2 38.1 28.2 8.0 1.6

100.0 0.5 0.6 1.2 4.0 14,6 36.1 31.0 9.9 2.1

100.0 0.5 0.5 1.3 5.1 20,1 40.3 25.2 6.0 1.0

100.0 1.0 1.2 2.5 8.3 25.3 37.1 18.9 4.6 1.3

100.0 1.0 1.1 2.3 7.2 22.4 37.4 21.3 5.6 1.5

100.0 1.0 1.2 2.6 9.3 28.1 36.8 16.4 3.6 0.9

lRoundad to the nearest 10 grams.

(3,501-4,000 grams), while for other infants it

was the next lighter weight group (2,50 1-3,000

grams).

Another characteristic that showed weight

differentials at birth is sex. On the average,

females weighed less than males. There was very

little difference in the proportions of male and

female infants weighing under 2,001 grams

(table A). At 2,001-2,500 grams, however, the

proportion of female births turned up more

sharply, resulting in the proportion of low birth

weight females being 20 percent higher than the

corresponding proportion of males. The modal

weight group for both male and female births in

both color groups was 3,001-3,500 grams. Comparison of the percentages on each side of this

weight interval demonstrates, as do the average

weights, the tendency of males to reach appreciably heavier weights in utero than females. A

white male infant was more than twice as likely

to weigh 3,501-4,000 as 2,501-3,000 grams. For

white females, the excess in the heavier group

amounted to only 25 percent. For infants of

other races the reverse was true, with the lighter

group being larger for males by 5.2 percent and

—

Median

weight

in

gramsi

3,310

3,370

3,260

3,340

3,400

3,280

3,160

3,210

3,110

Percent

weighing

2,500

grams

or less

7.8

7.1

8.5

6.8

6.3

7.4

12.9

11.7

14.2

for females by 71,3 percent. Also, larger proportions of male than female infants were born in

every interval above 3,500 grams. This was true

for both color groups.

Analysis of mortality expen”ence. –The infant

mortality rate for the 1960 live-birth cohort was

2,513.9 per 100,000 live births. However, the

rate varied considerably when factors such as

birth weight, age at death, length of gestation,

color, sex, plurality, and age of mother were

taken into account. Of these variables, the one

that had the greatest effect on the rate was the

birth weight of the infant (table 2). Infant

mortality rates were highest for the lightest

babies and declined steadily as birth weight

increased, reaching a low for infants weighing

between 3,001 and 4,500 grams at birth before

rising slightly for infants who were exceptionally

heavy at birth (table 2 and figures 1-4). The

birth weight category with the lowest rate for a

~ven age at death varied slightly by color and

practically not at all by sex (figures 1 and 4).

The infant mortality rate varied considerably

by both color and sex. For example, the rate for

males (2,828.4) was 29.5 percent higher than

4
the rate for females (2,1 84.0). The difference by

color was even greater, with a rate for infants

other than white (4,142.3) that was 86.9 percent above the rate for whites (2,2 16. 7).

It is well known, however, that birth weight is

a variable that greatly affects an infant’s chances

of surviving the first year of life. Infants whose

birth weights were 2,500 grams or less had

markedly higher infant mortality rates than

infants who weighed more than 2,500 grams at

birth (table 2). Moreover, a baby’s birth weight

was related to both its color and its sex. A much

greater percentage of infants of races other than

white (12.9 percent) than of white infants (6.8

percent) were born weighing 2,500 grams or less.

(See table B.) It therefore seemed appropriate to

examine the data after adjusting for differences

\

\, Infant mortality rates

\

—White

——Another

\

\

Postneonatal mortality rates

\

‘“—White

. . . . .. All Other

\

Postneonatal probabilities of

\

dying (per 100,000 survivors)

-.-.-white

\

. . . .Allother

BIRTH WEIGHT IN GRAMS

Figure 1. Infant and postneonatal mortality rates and postneonatal probabilities of dying, by color and birth weight.

10,(

lJ

— 7.13 Oays

—— 14-20 Oays

-–- 21-27 Oays

—.— 2a.59 Days

..-...-. 2.11 Months

:

. . . . . . . . . . . . . .

I

\

/’ \

\

\

~--<

BIRTH WEIGHT IN GRAMS

Figura 2. Infant mortality rates, by birth weight and age at

death.

in birth weight. The mortality rates adjusted for

differences in birth weight, using the weight

distribution of all live births in 1960 as a

standard, are given in table C.

When both rates were adjusted for birth

weight, the infant mortality rate for infants

other than white was only 29.9 percent higher

than the rate for whites as opposed to an excess

mortality of 86.9 percent when both rates were

unadjusted. Thus differences in the distribution

of births by birth weight accounted for about

two-thirds of the excess mortality experienced

by these infants. The excess mortality within

each sex group experienced by infants of races

other than white that could be explained by

differences in the birth weight distribution of

live births between the color groups was about

the same as that for both sexes combined.

5
\

\

\

\

\ — White

\

---- All other

\

BIRTH WEIGHT IN GRAMS

Figure 3. Infant mortality rates,by color and birth weight.

Tabla B. Percentage of births,by birth weight, color, and sex

Color and sex

2,500 2,501

grams grams

or or

lass more

H- Total, both sexes . . . . . . . . . . . . 7.8 92.2

Male . . . . . . . . . . . . . . . . . . . . . 7.1 92.9

Female . . . . . . . . . . . . . . . . . . . . 8.5 91.5

White . . . . . . . . . . . . . . . . . . . Sj.s 93.2

Male . . . . . . . . . . . . . . . . . . . . . 6.3 93.7

Female . . . . . . . . . . . . . . . . . . . . 7.4 92.6

AH other . . . . . . . . . . . . . . . . .

t-t--

12.9 87.1

Male . . . . . . . . . . . . . . . . . . . . . 11.7 88.3

Female . . . . . . . . . . . . . . . . . . . . 14.2 85.8

Among infants weighing 2,500 grams or less

at birth, infant mortality rates tended to increase rapidly as birth weight decreased (table

2). By age at death, however, only the rates for

those who died under 7 days of age followed

this pattern. The highest rates between 2 and 11

months occurred for those infants whose birth

weights were 1,501-2,000 grams. Of the infants

who died at all other ages, those with birth

weights of 1,001-1,500 grams had the highest

rates. The same general pattern, with only minor

Table C. Mortnlity rwr?s adjl [stcd for differences in birth weight,

by color and sex

Co! or

Total . . . . . . .

White . . . . . . . . . . . . .

Another . . . . . . . . . . .

Both II Mala Famale

sexes

II I

Rates par 100,000 Iiva births

II 2,513.9 2,911.0 2,143.6

2,430.9 2,817.1 2,068,6

3,158.8 3,588.4 2,738.1

II I

100,00

10,00

1,00

10(

1’

— Both sexes

..

--- Male

. . . . . . . Fe~ele

. . . . . . . . . . . . . . . .

D -

BIRTH WEIGHT IN GRAMS

Figure 4. Infant and postneonatal mortality ratas,by birth weight

and sex.

6
variations, was observed for each of the four

color-sex groups.

Infants with the very lowest birth weights

tended to have extremely high infant mortality

rates. For example, of every 100,000 infants

with birth weights of 1,000 grams or less, nearly

92,000 died before reaching the age of 1.

Furthermore these infants tended to die very

early within the first year of life. Of those who

died under 1 year of age, 99 percent died in the

first 28 days of life and 97 percent in the first 7

days of life. Since so many of these infants died

early in life, relatively few survived to any age

over 7 days, and thus relatively few cotdd

possibly have died at these older ages. Therefore

rates based on the number of live births tend to

bc mideading for low birth weight infants. For

this reason a second set of rates has been

computed based on the number of survivors at

the beginning of each age interval. These rates

are always higher than those based on the

number of live births, but for the birth weight

groups above 2,500 grams the differences are

negligible. For infants weighing 2,500 grams or

less and dying between 7 and 364 days after

birth, the differences in the rates range from

about 4 percent to well over 1,000 percent

(table D).

When rates based on survivors were examined,

it was found that for those infants whose birth

weights were 2,500 grams or less, infant mortality increased as birth weight decreased (table 4).

Furthermore this relationship held regardless of

the infant’s age at death. In addition, the same

pattern held for each of’ the four color-sex

groups; the only exception to this occurred

Table D, Percentage difference between rates based on survivors

and rates based on live births for selected birth weights and

ages at death

Birth weight

1,000 1,001 1,501 2,001

Agc

grams to to to

or 1,500 2,000 2,500

less grams grams grams

7-13days .,..,... 844.6 94.8 20.1 3.7

14-20 days , . . , , . . , 987,7 103.9 21.2 4.0

21-27 days . . . ., . . . 1,027.3 107.2 21.7 4.1

28-59 days. . . . . . . . 1,046.6 108.0 22.0 4.3

Z-n months , . . . . . . 1,076.6 112.7 23.1 4.8

—-

among infants other than white, both male and

female, who died between 2 and 11 months

after birth. In these two groups the probabilities

of dying among babies who weighed between

1,001 and 1,500 grams at birth were higher than

the probabilities of those who weighed 1,000

grams or less at birth.

Period of Gestation, Color, Sex, and

Age at Death

Characteristics of live births. –As reported on

birth certificates, information on length of

gestation is not as accurate as information on

birth weight. Some of the shortcomings can be

seen in the distribution of births by length of

gestation shown in table E.

Considering the size of the interval, a comparatively large proportion of all births occur at 36

weeks of gestation. This is probably the result of

erroneous conversion of 9-month gestations to

36 weeks. This type of error was also present at

shorter gestations, but the broad intervals into

which the data have been grouped tend to

reduce its effect. In addition, the heavy concentrations at 40 weeks and over are indicative, at

least in part, of a failure to calculate the length

of gestation for infants who seem to be normally

developed at birth. Although the main result of

this is to lessen the numbers in the interval

37-39 weeks, some understatement of the numbers of infants born with gestations of less than

36 weeks may also occur. This grouping at 36

weeks and at 40 weeks and over was less

pronounced in 1960 than it was in 1950.9 The

tendency of the States in recent years to ask on

the birth certificate for “date of last normal

menses” rather than for “length of gestation”

shouId furti ~er reduce the heaping of births in

ccrt.ain .qxtational intervals.

Because of the substantial errors noted, data

by gcstational agc sl-lould be taken as only being

suggestive of wlutt the actual situation is. Data

are shown for relatively broad groups for comparative purposes, rather than for tl]c absolute

values

The percentage distributions of’ births by

length of gestation in table E indicate that

somewhat greater proportions of infants of races

other than white than of white infants were

born before the 36th week of gestation. In the

7
Table E. Percentage distribution of live births,by period of gestation, color, and sex

e

!

Period of gestation

Color and sex Total Under

40

20

20-27 28-31 32-35 38 37-39 weeks Not

weeks weeks weeks weeks weeks or

weeks

statad

more

Total, bahs=e$ . . . . . . . . . . . . . . 100.0 0.0 0.6 0.8 2.2 3.1 15.0 72.5 5.7

.

Male . . . . . . . . . . . . . . . . . . . . . . . 100.0 0.0 0.6 0.8 2.3 3.1 15.2 72.1 5.8

Female . . . . . . . . . . . . . . . . . . . . . . 100.0 0.0 0.5 0.8 2.1 3.1 14.8 72.9 6.7

White . . . . . . . . . . . . . . . . . . . . . 100.0 0.0 0.5 0.7 2.0 2.8 15.3 72.8 6.1

Male . . . . . . . . . . . . . . . . . . . . . . . 100.0 0.0 0.5 0.7 2.1 2.8 15.5 72.3 6.1

Female . . . . . . . . . . . . . . . . . . . . . . 100.0 0.0 0.4 0.6 1.9 2.7 15.0 73.3 6.0

Another . . . . . . . . . . . . . . . . . . . . 1m.o 0.1 1.0 1.5 3.4 5.0 13.8 71.2 3.9

Male . . . . . . . . . . . . ...’... . . . . . 100.0 0.1 1.0 1.5 3.4 4.9 13.8 71.2 4.0

Female . . . . . . . . . . . . . . . . . . . . . . 100.0 0.1 1.0 1.5 3.4 5.1 13.9 71.2 3.6

white group, 3.2 percent of the live births

occurred prior to the completion of36 weeks of

.gestation, as compared with 6.0percent for the

remainder of the population. With regard to sex,

however, there appeared to be little difference

between the sexes in the proportions of live

births reported at these early gestations in the

total population andinboth color groups.

Analysis of mortality expers”encc.–A variable

highly correlated with birth weight that also

greatly influenced an infant’s chance of surviving

its first year of life was length of gestation.

Infant mortality rates were very high for infants

whose period of gestation was under 20 weeks,

but rose to even higher levels at 20-27 weeks of

gesta~i~n. From this pe~ there was a steady and

rapid drop in the rates as the length of gestation

increased to 40 weeks or more (table 6). Each of

the four color-sex groups followed exactly the

same pattern except that there was a slight rise

in the rates between 37-39” weeks and 40 weeks

or more for both males and females of races

other th~ white. The fact that infants ~th

gestational ages of 20-27 weeks experienced

higher rates than those whose gestational ages

were under 20 weeks is difficult to explain. The

pattern was consistent, being true for both color

groups, both sexes, the neonatal and postneonatal periods, selected ages at death within these

periods, as well as at nearly all combinations of

these variables. From a medical point of view,

there is no known reason why an infant’s chance

of survival should be greater if his gestational

period is under 20 weeks than if it is 20-27

weeks. One possible explanation of this phenomenon might be that there is more underreporting

of deaths among infants in the former category

than in the latter. However, this is only speculation because the amount of underreporting of

deaths, regardless of age or length of gestation, is

unknown.

The degree to which the length of the

gestational period affects infant mortality may

be seen in the following table:

Rem Total White All

othar

Percent of births with

gestations of under

28weeks . . . . . . . . . . . . . 0.6 0.5 1.1

Percent of infent deaths

with gestations of undar

28weeks . . . . . . . . . . . . . 19.4 19.2 19.8

Thus nearly 20 percent of all infant deaths were

contributed by infants who comprised only 0.5

to 1.1 percent of all live births. At the other

8
extreme, “infants with 40 weeks or more of

gestation made up more than 70 percent of all

live births but only 30 to 40 percent of the

infant deaths.

Infant mortality rates by color and length of

gestation showed that white babies experienced

lower rates than those in the remainder of the

population when their lengths of gestation were

under 20 weeks and when they had gestational

ages of 36 weeks or more. The reverse was true

when the length of gestation was between 20

and 35 weeks. A similar pattern was observed in

the neonatal rates except that whites of 36

weeks of gestation also experienced higher rates

than the remainder of the population in this

gestational interval. During the postneonatal

period, however, whites exhibited lower rates

regardless of the length of gestation.

The infant mortality rates for males rose as

the length of gestation increased from under 20

weeks to 20-27 weeks and then fell steadily,

reaching their lowest point for infants whose

gestational period was 40 weeks or more. The

rates for females had exactly the same pattern,

but were slightly below the corresponding rates

for males at every gestational age. The curyes of

the neonatal and postneonatal rates had exactly

the same pattern as the one for infant mortality,

namely, slightly higher rates for males than for

females, a peak in the rates at 20-27 weeks of

gestation, and a low point at 40 weeks or more.

The differences between the infant mortality

rates and probabilities of dying within a given

time interval after birth were small when the

gestational age of the infant was 36 weeks or

more. Virtually all infants who died before their

first birthday and who had a length of gestation

of under 20 weeks died in the first week of life

(1,074 out of 1,078; see table 5). Therefore it

was not practical to consider the probability

that infants with this length of gestation died at

ages above 7 days. For the three remaining

periods of gestation (20-27 weeks, 28-31 weeks,

and 32-35 weeks), the probabilities of dying in

the age intervals above 7 days, regardless of

color or sex,were approximately 400, 64, and 12

percent higher than the corresponding mortality

rates (table F).

Table F. Percent by which the probability of dying within an age interval is greater than the mortality rate in that interval, by length

of gestation, color, and sex: United States, 1960 live-birth cohort

Color and age interval

Total

7-13days . . . . . . . . . . . . . . . . . . . . .

14-27 days . . . . . . . . . . . . . . . . . . . .

28days-5 months . . . . . . . . . . . . . . . . .

6.11 months . . . . . . . . . . . . . . . . . . .

White

7-13days . . . . . . . . . . . . . . . . . . . . .

14.27 days, . . . . . . . . . . . . . . . . . . .

28days-5 months . . . . . . . . . . . . . . . . .

6-n months . . . . . . . . . . . . . . . . . . .

All other

7-13days, . . . . . . . . . . . . . . . . . . . .

14-27 days . . . . . . . . . . . . . . . . . . . .

28days-5 months . . . . . . . . . . . . . . . . .

6-n months, . . . . . . . . . . . . . . . . . .

Both sexes

20-27

weeks

370.0

401.7

416.7

437.1

455.9

494.1

512.3

531.7

235.6

257.3

267.7

287.5

28-31

weeks

58.1

62.2

64.3

69.8

88.1

72,6

74.3

79.0

38.4

41.8

44.4

51.2

32-35

weelc

11.1

11.7

12.1

13.B

12.4

13.0

13.3

14.7

7.3

7.8

8.4

10.8

20-27

wee ks

404.5

434.6

453.0

476.1

487.3

524.6

545.9

567.2

262.2

281.3

284.8

317.1

Male

28-31

weeks

88.9

73.5

75.7

82.1

79.0

84.2

86.1

91.7

47.3

50.7

53.5

61.2

32-35

weeks

13.2

13.8

14.2

16.2

14.5

15.1

15.5

17.1

9.0

9.6

10.2

13.0

20-27

weeks

334.6

367.4

379.2

387.5

421.1

460.2

475.1

491.3

211.3

235.0

242.7

260.0

Female

28-31

weeks

47.3

51.0

52.9

57.6

56.6

60.5

62.0

65.7

30.5

33.9

36.3

42.4

32-35

weeks

8.9

9.4

9.8

11.1

10.1

10.6

10.9

12.0

5.6

6.1

6.7

8.7

9
Within each gestational period, the percent

increase in the rate obtained by dividing deaths

by the number of survivors instead of by the

number of live births was lowest in the age

interval 7-13 days and increased steadily to a

high in the interval 6-11 months. Thus while

data by age at death were affected slightly by

replacing the number of live births by the

number of survivors in the calculation of rates,

the greatest effect by far was on the three

gestational periods under discussion, particularly

the period from 20 to 27 weeks. The pattern

that was observed for the total population was

also observed for each sex and each color group

and for each of the four color-sex groups. The

differences by color were much greater than

Ihose by sex. Among the four color-sex groups

the greatest differences in the rates occurred in

the rates for white males, with the differences

decreasing steadily in the white female, other

male, and other female groups; the percent

differences in the latter group running generally

less than half those of the white males. This

reflects the higher neonatal rates that the white

population experiences in these three gestational

groups (table 6).

The comparison of mortality rates by age at

death can be misleading since the age intervals

involved vary from 1 week to 6 months; and

obviously, the longer the period of time that is

under consideration the greater are the chances

of a death occurring during the interval. This is

true whether the rates are based on the number

of live births or on the number of survivors to a

given age. In the following discussion all rates

are weekly rates and are based on survivors (i.e.,

probabilities of dying). If death occurs under 7

days of age, the rates and the probabilities are

identical; therefore, that category has been

eliminated and only the categories 7-13 days,

14-27 days, 28 days-5 months, and 6-11 months

are discussed here. Also, because of the small

number of deaths at ages 7 days or more among

infants whose gestational age was under 20

weeks, this gestational category was dropped but

all the others, including the “not stated” category, have been considered,

When both color and sex are ignored, the

probabilities of dying dropped regularly and

substantial y with increasing age at death for all

infants, regardless of length of gestation. Furthermore, when plotted, the shapes of the

curves, in addition to falling with increasing age

at death, were generally concave upward indicating that age, while still a factor, becomes less

important as the infant approaches his first

birthday (figure 5). The foregoing statements

were also true for each color, each sex, and each

color-sex group.

For all infants the probabilities of dying at

various ages when their lengths of gestation were

not stated were somewhat lower than when their

gestational period was stated to have been 36

weeks. This was also true for the male, female,

and white groups. However, among the remaining infants with length of gestation not stated,

the probabilities of dying at the various ages

under consideration generally were higher than

those in the gestational period 36 weeks but

lower than the probabilities in the interval 32-35

‘weeks. Thus it appears that white infants whose

length of gestation was not stated tend to be

full-term babies, but infants of other races in this.

category were more likely to be somewhat less

than-full term.

ToTAL, BOTH SEXES

------ 20-27 weeks

—— 28-31 weeks

\

‘—- 32-35 weeks

\ - 0 36 weeks

~, “i– Eg::::t:ons

. . . . . . . . 37.39 weeks

;>”.., — 40 weeks and cwer

\ +.,

\

.:

i I 1 t I I I I 1 I 1 ! I [

3691215182124273033 363942

AGEAT DEATH IN WEEKS

Figure 5. Averege weekly probabilities of dying, by length of

gestation and age at death.

10
Birth Weight, Age of Mother, Plurality, Color,

and Age at Death

Charactenitics of live births. –For the entire

country, 7.8 percent of the live births weighed

2,500 grams or less. Among white babies 6.8

percent fell into this category, while the comparable percentage for the remainder of the population was 12.9 percent.

Only 6.8 percent of infants born in single

deliveries weighed less than 2,500 grams at birth,

while a majority (53.9 percent) of those born in

plural deliveries fell into this category.

Among single births nearly twice as many

infants of races other than white (11.7 percent)

than white infants (5.9 percent) weighed 2,500

grams or less at birth. The difference between

the color groups for plural births was only 17.5

percent.

Mothers under 20 years of age (especially

those under 15) and those 45 years old and over

were more likely to bear infants weighing 2,500

grams or less than other women (table G). This

pattern was observed regardless of color or of

the plurality of the birth.

In all cases mothers under 15 had the greatest

chance of bearing an immature infant. This risk

increased as birth weight decreased and was

greatest when the infant weighed 1,000 grams or

less at birth. About 1.7 percent of the infants

born to mothers under 15 years of age weighed

1,000 grams or less at birth compared with 0.7

percent or less for mothers of all other ages.

Most (65.8 percent) infants born in single

deliveries weighed between 3,001 and 4,000

grams, while most (58.8 percent) of those born

in plural deliveries weighed between 2,001 and

3,000 grams.

Analysis of mortality experience. –In considering infant mortality rates by birth weight

and age of mother, comparisons of infants

weighing more than 4,000 grams at birth were

difficult to make because of the small numbers

of births and deaths in these groups, particularly

for women under 20 years of age and wom’en 40

years of age and over. Therefore, within each age

group, births and deaths were summed for

infants weighing 3,501 grams or more at birth.

When this was done a consistent pattern

emerged. Below 1,501 grams, babies born to

mothers under 20 years of age or 40 years of age

and over had a slightly better chance of surviving

the first year of life than did babies whose

mothers were 20-39 years of age. However, for

infants weighing 1,501 grams or more, the

reverse was true. In these weight groups, infants

born to mothers under 15 years of age or 45

years and older consistently had higher mortality rates than all other infants. A baby’s chance

of survival was best if his mother was between

25 and 34, with the ages 20-24 and 35-39

showing survival rates not far behind. When the

two oldest and two youngest categories of age of

mother were combined and compared with the

other four age groups combined (table H), the

mothers in the former group had higher rates in

every birth weight group except the lightest. The

ratio of these rates rose with birth weight from

1.06 at 1,501-2,000 grams to 1.36 at 3,501

grams or more. Under 1,000 grams the ratio of

the infant mortality rates was 0.97.

When color and plurality were considered

simultaneously with birth weight and age of

mother, the following points were observed:

1. Among single births the white population

had higher infant mortality rates than the

remainder of the population at all birth weights

up to 2,500 grams. Thereafter the rates for the

population other than white exceeded those of

the whites.

2. Among plural births the rates for the white

population exceeded those for the remainder of

the population only in the two lightest birth

weight groups. Beginning with the category

1,501-2,000 grams, the rates for infants other

than white exceeded those of the whites, and

this discrepancy widened as birth weight increased up to the category 3,501-4,000 grams.

The highest rates for “all other” to

rates for whites were about W2 to 1 for both

single and plural’ births. This pattern persisted,

with only minor variations, throughout the

range of ages of mother.

When considering the postneonatal period,

probabilities of surviving from 28 days to the

first birthday (rather than rates based on live

births) were examined. Here again, because of

small frequencies, categories at each end of the

11
Table G. Percentage distribution of live births,by birth weight, color, age of mothar, and plurality

II Birth weight

3,501

to

4,000

grams

4,501

grams

or

mora

Plurality of birth,

color, and age of mother

1,000

grams

or

less

1,001

to

1,500

grams

1,501

to

2,000

grams

2,001

to

2,500

grams

2,501 3,001

to to

3,000 3,500

grams grams

4,001

to

4,500

grams

Total

1

Al I BIRTHS

Total Parentage distribution

Alleges . . . . . . . . . . . . . . . 100,0 0.6 0.7 1.5 5.1 18.5 38.0 26.8 7.5 1.5

Under 15years . . . . . . . . . . . . . .

15-19 years . . . . . . . . . . . . . . . .

20-24 years . . . . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . . . . .

40-44years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . . .

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

1.7

0.7

0.5

0.5

0.6

0.6

0.5

0.6

0.5

1.0

0.6

0.5

0.4

0.5

0.5

0.5

0.6

1.0

2.1

1.3

1.0

1.0

1.0

0.9

0.7

0.6

2.0

0.9

0.6

0.6

0.6

0.6

0.7

0.9

0.6

1.4

0.8

0.5

0.5

0.5

0.6

0.6

0.8

1.2

2.3

1.5

1.1

1.1

1.1

1.0

0.9

1.2

2.9

2.0

1.4

1.3

1.4

1.6

1.6

1.9

1.3

2.6

1.7

1.2

1.1

1.2

1.4

1.5

1.9

2.5

3.1

3.1

2.4

2.2

2.3

2.4

2.2

2.1

9.6

6.4

4.9

4.7

4.9

5.2

5.5

6.3

4.5

6.5

5.3

4.4

4.2

4.5

4.8

5.2

5.6

8.3

11.4

10.2

8.2

7.4

7.6

7.6

7.4

9.6

29.0

21.4

19.1

17.8

17.1

16.4

16.2

15.2

17.2

22.8

19.0

17.9

16.9

16.3

15.7

15.5

14.3

25.3

32.8

29.7

26.6

23.7

21.8

20.9

20.4

19.1

37.0

39.5

39.5

38.0

36.0

34.4

32.9

33.1

38.1

39.8

40.1

39.7

38.1

36.1

34.5

33.0

33.6

37.1

35.4

37.1

38.5

37.7

35.7

34.0

32.1

30.6

14.7

23.3

26.3

27.7

28.2

28.5

28.2

27.6

28.2

21.4

25.9

27.7

28.9

29.2

29.4

28.9

28.6

18.9

10.8

14.2

17.8

20.7

22.1

23,1

24.1

23.3

2.6

5.1

6.6

7.9

9.0

9.9

10.9

10.9

8.0

4.2

5.8

7.1

8.3

9.4

10.4

11.3

11.3

4.6

1.6

2.5

3,7

5.1

6.4

7.4

8.6

9.3

0.4

0.7

1.1

1.6

2.2

2.8

3.4

3.4

1.6

0.4

0,8

1.1

1.7

2.2

2.8

3.3

3.3

1.2

0.5

0.5

0.8

1.2

2.0

2.8

3.7

4.2

White

Alleges . . . . . . . . . . . . . . .

Under 15years . . . . . . . . . . . . . .

15-19years . . . . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . . . . .

40-44years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . . .

All other

Alleges . . . . . . . . . . . . . . .

Under15years . . . . . . . . . . . . . .

15-19years . . . . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . . .

35-39years . . . . . . . . . . ..,..:

40-44years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . . .

12
Table G. Percentage distribution oflivebitihs,by bitihweight, color, age of mother, andplurality–Con.

Plurality of birth,

color, and age of mother

SINGLE BIRTHS

TAlleges . . . . . . . . . . . . . . .

Under 15years, . . . . . . . . . . . . .

15-19 years . . . . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . . . . .

25-29years, . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . . . . .

40-44years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . . .

White

Alleges . . . . . . . . . . . . . . .

Under15years . . . . . . . . . . . . . .

15-19years . . . . . . . . . . . . . . . .

20.24years .. m........ . . . . .

25-29years . . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . . .

35-39years o.. o........ . . . .

40-44years . . . . . . . . . . . . . . . .

45yearsandover . ’. . . . . . . . . . . .

$

All other

Alleges . . . . . . . . . . . . . . .

Under15years .,...... . . . . . .

15-19years . . . . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . . . . .

30.34years . . . . . . . . . . . . . . . .

35-39years . . . .. o..... . . . . .

40-44years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . . .

—

Total

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

Birth weight

1,000 1,001 1,501 2,001

grams to to to

or 1,500 2,000 2,500

less grams grams grams

1 I I

0.5

1.5

0.6

0.4

0.4

0.5

0.5

0.4

0.5

0.4

0.8

0.5

0.4

0.4

0.4

0.4

0.4

0.6

0.9

1.9

1.1

0.9

0.8

0.9

0.7

0.5

0.4

0.5

2.0

0.8

0.5

0.5

0.5

0.5

0.6

0.8

0.5

1.4

0.7

0.4

0.4

0.4

0.5

0.6

0.7

1.0

2.3

1.4

1.0

0.9

0.9

0.8

0.8

1.3

1.2

2.7

1.7

1.1

1.0

1.1

1.2

1.4

1.7

1.0

2.5

1.5

1.0

0.9

1.0

1.1

1.3

1.7

2.1

2.9

2.8

2.0

1.7

1.9

1.9

1.9

2.1

2,501 3,001

to to

3,000 3,500

grams grams

Percentage distribution

4.6

9.3

6.1

4.5

4.1

4.3

4.5

4.9

5.9

4.0

6.2

5.0

4.0

3.7

3.8

4.1

4.6

5.3

7.7

11.2

9.9

7.7

6.7

6.7

6.6

6.7

8.5

18.3

29.2

21.4

19.0

17.5

16.7

16.0

15.9

15.1

17.0

22.8

19.0

17.7

16.6

15.9

15.2

15.2

14.2

25.2

33.0

29.9

26.6

23.6

21.6

20.7

20.2

19.1

38.5

37.4

38.9

40.0

38.5

36.6

35.0

33.3

33.4

38.6

40.2

40.5

40.1

38.5

36.6

35.0

33.5

33.9

37.8

35.7

37.6

38.2

38.5

36.6

34.8

32.6

30.9

Tr 3,501 4,001 4,501

to to grams

4,000 4,500 or

grams grams more

27.3

14.9

23.6

26.7

28.3

28.9

29.2

28.8

28.0

28.7

21.6

26.2

28.1

29.4

29.9

30.1

29.5

28.9

19.4

10.9

14.4

18.2

21.2

22.9

23.9

24.7

23.8

7.6

2.6

5.2

6.7

8.0

9.2

10.2

11.2

11.1

8.1

4.2

5.9

7.2

8.5

9.7

10.6

11.6

11.4

4.7

1.6

2.5

3.8

5.3

6.6

7.6

8.8

9.5

1.6

0.4

0.7

1.1

1.7

2.3

2.9

3.5

3.5

1.6

0.4

0.8

1.2

1.7

2.3

2.8

3.4

3.3

1.3

0.5

0.5

0.8

1.3

2.0

2.9

3.8

4.3

13
Table G. Percentage distribution oflivebitihs,by bitihweight, color, age of mother, andplurality–Con.

Plurality of birth,

color, and age of mother

PLURAL BIRTHS

Total

Alleges . . . . . . . . . . . . . . .

Under 15years . . . . . . . . . . . . . .

15-19 years . . . . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . . .

35-39yaars . . . . . . . . . . . . . . . .

40-44years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . . .

White

Alleges . . . . . . . . . . . . . . .

Under15years . . . . . . . . . . . . . .

15-19years . . . . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . . . . .

4044years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . . .

All other

Alleges . . . . . . . . . . . . . . .

Undw!5years. . . . . . . . . . . . .

15-19years m. . . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . . . . .

40-44years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . . .

Total

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

100.0

1,000

grams

or

less

4.9

26.7

10.0

5.8

4.0

3.8

3.6

4.0

2.9

4.5

25.0

9.3

5.4

3.7

3.4

3.4

3.6

6.5

27.8

12.0

7.3

5.2

5.4

4.0

5.8

9.1

1,001

to,

1,500

grams

5.6

6.7

9.4

6.4

5.0

4.7

4.2

4.3

5.9

5.1

8.3

9.5

5.8

4.5

4.3

3.8

4.4

8.7

7.3

5.6

9.1

8.9

7.1

6.1

5.8

3.9

Birth weight

1,501 2,001

to to

2,000 2,500

grams grams

14.0

25.0

20.0

15.2

13.1

12.1

12.6

13.4

14.7

13.3

16.7

19.4

14.5

12.4

11.4

12.1

13.6

21.7

16.7

30.6

21.6

18.1

16.2

14.7

14.7

12.6

T

2,501 3,001

to to

3,000 3,500

grams grams

Percentage distribution

29.4

35.0

30.3

29.7

29.2

29.3

28.4

29.5

39.7

29.1

33.3

29.8

29.5

29.0

29.1

27.6

29.6

32.6

30.6

36.1

31.8

30.8

30.1

29.8

31.3

29,2

54.5

29.4

6.7

21.4

28.9

30.7

31.0

30.7

30.0

25.0

30.3

16.7

21.9

29.9

31.5

31.5

31.8

30.6

28.3

25.9

20.0

24.7

27.3

28.9

26.3

27.3

18.2

13.8

7.5

11.9

15.1

15,7

16.6

14.8

8.8

14.6

8.5

12.7

15.8

16.4

17.0

14.7

4.3

10.8

4.7

8.5

12.0

12.8

14.8

15.5

18.2

3,501

to

4,000

grams

2.5

1.2

1.9

2.7

3.0

3.5

3.3

2.9

2.7

1.4

2.0

2.9

3.2

3.8

2.9

4.3

1.9

0.7

1.5

2.0

2.1

2.7

5.3

4,001

to

4,500

grams

0.3

0.1

0.2

0.2

0.4

0.3

0.7

0.3

0.1

0.2

0.2

0,5

0.3

0.8

0.2

0.1

0.2

0.1

0.1

0.5

0.5

4,501

grams

or

more

0,0

0.1

0.0

0.1

0.0

0,1

0.0

0.1

0.0

0,1

0.0

0.l

0.0

.

0.0

0.1

14
Table H, Number of infant deaths and Iivebirths, infant mortality rates, andratios ofinfant mortality rates, by Mtihweight and age

Birth weight

1,000 grams or less . . . . . . . . . . . . . . . .

1,001 -l,500grams . . . . . . . . . . . . . . . . .

1,501 -2,000 grams . . . . . . . . . . . . . . . . .

2,001 -2,500 grams . . . . . . . . . . . . . . . . .

2,501 .3,000 grams . . . . . . . . . . . . . . . . .

3,001 -3,501 grams . . . . . . . . . . . . . . . . .

3,501 -4,000 grams . . . . . . . . . . . . . . . . .

4,001 -4,500 grams . . . . . . . . . . . . . . . . .

4,501 grams or more . . . . . . . . . . . . . . .

of mother

Under I

20, and

40 and

over

20-39

Number of

infant deaths

4,498

3,587

2,902

2,774

3,213

3,389

1,712

459

120

17,861

11,638

9,887

9,935

11,737

13,011

7,371

2,188

756

Age of mother

Under

20, and

40 and

over

20-39

Number of

Iiva births

5,008

6,272

13,377

43,448

142,977

266,049

165,074

40,703

7,584

19,315

21,484

48,528

173,988

644,060

1,350,494

973,969

277,110

58,410

20, and

40 and

ovar

20-39

mortality

rates

89,816.3

57,190.7

21,694.0

6,384.6

2,247.2

1,273.8

1,037.1

1,127.7

1,582.3L

92,472.2 0.97

54,170.5 1.06

20,373.8 1.06

5,710.2 1.12

1,822.3 1.23

963.4 1.32

756.8 1.37

789.6 1.43

1,294.3 1.22

distributions of birth weight and age of mother category as birth weight increased throughout

have been combined.

An infant born to a mother under 20 years of

age had, with one exception, a greater probability of dying during the postneonatal period at

every birth weight than an infant born to a

mother of any other age. The exception was in

the category 1,500 grams or less, where infants

born to mothers aged 35-39 had a slightly higher

probability. Interestingly, infants whose birth

weights were 1,500 grams or less had the best

chance of surviving the postneonatal period if

their mothers were 40 years of age and over.

Over the entire range of birth weights, the best

chance of surviving was afforded those infants

whose mothers were 25-39 years old. In general,

the youngest (under 20 years) and the oldest (40

years and over) mothers had the highest probability of bearing an infant that would succumb

during the postneonatal period.

The shape of the curve of the probabilities of

dying during this period by age of mother was

not affected by birth weight. It was generally

U-shaped, being highest when the age of mother

was under 20 years and 40 years and over and

lowest for the intermediate ages. However, birth

weight did have a pronounced effect on the level

of the curve: there was a steady decline in the

probabilities of dying in every age of mother

the entire range of birth weights.

An infant’s chance of dying during the first

28 days of life fell dramatically as his birth

weight increased. His chance of surviving the

postneonatal period also improved with increasing birth weight, but not nearly as much.

Infants of low birth weight, whether born in

single or plural deliveries, were more likely to

die during the first 28 days of life than infants

of higher birth weight. (See figures 6 and 7.) The

neonatal mortality rate for infants born in single

deliveries was substantially higher than the

corresponding probability of dying during the

postneonata.1 period for all birth weights of

3,000 grams or less. Above 3,000 grams the

reverse was true. Among plural births, essentially

the same pattern was observed except that the

curves crossed at 2,500 grams instead of 3,000.

Of course the postneonatal period is 12 times as

long as the neonatal period; this should be

considered in interpreting the data.

Within the neonatal period, the rates for

single births tended to be higher than those for

plural births until an infant’s birth weight reached

3,001 grams. Thereafter infants born in plural

deliveries had the higher rates.

tion to this was observed in

category 1,000 grams or less. A

The only excepthe birth weight

different pattern

15
Infant mortality rates

— Single

—— Plural

Neonatal mortality rates

—.— Single

. . . . . . . pl”~al

Postneonatal probabilities of

dying (per 100,000 survivors)

--—.- Single

. . . . . . Plural

.

.

.

.

.

-..

“\:: .

“Y

“%.

x%

\\.\

“<’::

.

‘igure 6. Infant and neonatal mortality and postneonatal probabilities of dying, by birth weight and plurality.

was seen in the postneonatal period. Here

infants born in plu;al deliveries had a higher

probability of dying than their counterparts who

were born singly in all birth weight categories

except 1,501-2,000 and 2,001-2,500 grams.

Furthermore, for both periods the discrepancy

between the probabilities widened rapidly with

increasing birth weight beyond 3,000 grams.

The probabilities of dying within four different age-at-death categories were considered by

color and birth weight. (See figure 8.) These

were the categories under 1 day, 1-6 days, 7-27

days, and 28 days-11 months. Here again the

intervals were of unequal length, and this should

be considered when interpreting the findings.

For both the white population and the remainder of the population, there was little difference

between the probabilities of dying under 1 day

and 1-6 days within any birth weight group. The

curve of the probabilities of dying between 7

and 27 days had the same shape as the curves for

under 1 day and 1-6 days, but it was located at a

somewhat lower level throughout the range of

birth weights. This difference was greater among

white than among all other infants. Finally, for

white infants, the curve of the probabilities of

dying between 28 days and 11 months, while

starting at a somewhat lower level than the other

curves for very light infants, declined much less

steeply with increasing birth weight. This resulted in the postneonatal period I-.aving the

highest probabilities of dying in tl- ose birth

weight intervals which include the vast majority

of births—between 2,501 and 4,500 grams. The

foregoing was also true of infants other than

white except that the range of birth weights in

which the postneonatal probabilities exceeded

all others was even wider, including the category

2,001-2,500 grams.

The same categories for age at death were

used in the investigation of the joint effect of

plurality and birth weight on the probabilities of

dying. However, because of the small number of

infants over 4,000 grams born in plural deliveries, data for this group terminate either at

4,000 or 4,500 grams. Infants born in both

single and plural deliveries experienced relatively

little difference in their probabilities of dying

under 1 day and from 1 to 6 days within any

birth weight group. However, at 7-27 days the

mobabilities were lower in every birth weight

>oup. The differences tended to” be greater for

infants born in single deliveries than for those

born in plural ones. Both of these sets of infants

had a greater chance of dying during the

postneonatal period than at any other time

during the first year of life if they were full-term

babies weighing 2,501 grams or more at birth.

Infants weighing between 1,001 and 3,000

grams at birth had a better chance of surviving

the first week of life if they were part of a plural

delivery than if they were born singly. In

addition, the chances of surviving from 7-27

days were greater for infants weighing between

1,001 and 2,500 grams at birth if they were part

of a plural delivery. During the postneonatal

period this phenomenon was found only among

infants weighing between 1,501 and 2,500

16
100,000

r

100,000 r

100

I

— Under 1 day

. ..-...1.6 days

—— 7-27 days

—-- 28 Days-n months

BIRTH WEIGHT IN GRAMS

Figure 7. Probabilities of dying,by birth weight, age at death, and plurality of birth.

grams. At all other birth weights an infant had a

better chance of surviving any given time interval in the first year of life if he was born singly

rather than as part of a plural birth.

Birth Weight, Period of Gestation, Color, and

Age at Death

Characteristics of live births. –In the gestational intervals shown in table J, there is considerable dispersion of births by weight. Many

children who would be considered premature

according to gestational age weighed over 2,500

grams; and, conversely, many of the low birth

weight infants were reported to have been born

at or near term. For example, about one-third of

the infants born after gestational periods of

32-35 weeks weighed over 2,500 grams. This was

true regardless of color. Although the proportion of births at gestations of 40 weeks and over

that weighed 2,500 grams or less was small (3.0

percent), this group represented 28 percent of

the immature births. Similarly, the gestational

period of 37-39 weeks represented 18 percent of

the immature births, ,but only 9.4 percent of the

births in this group were of low birth weight.

Thus births with gestations of 37 weeks or more

contributed nearly half of the low birth weight

infants.

Although a wide range of birth weights is

represented in each gestational age group, the

median weights by gestation follow a consistent

pattern. The medians for gestation groups below

36 weeks are all less than 2,501 grams. For

17
100,000r

BIRTH WEIGH”i IN GRAMS

100,000

r

All other, all births

..

..

..

InE

:/

%

o 10,000

> --- 5e

3@

g

0

~-

\

0

~

Q

\

C3

z

s

n 1,000-

-----------

L0

>

~

J

E

<

m

0

E

n.

100

t

— Underl pay

. . . . . . 1.6 Days

— — 7-27 Days

-—- 28 Days-l lmonths

BIRTH WEIGHT IN GRAMS

Figure 8, Probabilities of dying,by birth weight, age at death, and color,

infants who had at least 36 weeks of gestation, and by length of gestation but also varied

the median birth weight was well above 2,500

grams (table K). -

At gestational ages through 36 weeks, white

infants weighed slightly less at birth than infants

of other races. However, when the gestational

period was 37 weeks or more, the reverse was

true. At these gestational ages white infants

weighed slightly more than infants of all other

races combined.

Analysis of mortality expem”ence. —Infant

mortality not only varied greatly by birth weight

considerably by birth weight within any given

length of gestation category and to a lesser

extent by period of gestation within a given

birth weight group. For example, for infants

who had a gestational period of 36 weeks, the

infant mortality rate varied from a low of

1,527.8 per 100,000 live births for those infants

weighing between 3,501 and 4,000 grams at

birth to a high of 74,820.1 for infants whose

birth weight was 1,000 grams or less. Thus the

highest rate was about 4,800 percent larger than

18
Table J. Percentage distribution of live births,by color, birth weight, and period of gestation

Period of gestation

Total Under

40

20

20-27 28-31 32-35 36 37-39 weeks Not

waeks weeks weeks weeks weeks

weeks

and stated

over

Color and birth weight

m

Total . . . . . . . . . . . . . . . . . . . .

l,OOOgrams orless . . . . . . . . . . . . . . . .

1,001 -l,500grams . . . . . . . . . . . . . . . .

1,501 -’2,000 grams . . . . . . . . . . . . . . . .

2,001 -2,500 grams . . .’. . . . . . . . . . . . .

2,501 .3,000 grams . . . . . . . . . . . . . . . .

3,001 -3,500 grams . . . . . . . . . . . . . . . .

3,501 -4,000 grams . . . . . . . . . . . . . . . .

4,001 -4,500 grams . . . . . . . . . . . . . . . .

4,501 grams or more . . . . . . . . . . . . . . .

All other

Total . . . . . . . . . . . . . . . . . . . .

1,000 grams orless . . . . . . . . .. . . . . . . .

1,001 -l,500grams . . . . . . . . . . . . . . . .

1,501-2,000 grams . . . . . . . . . . . . . . . .

2,001 -2,500 grams . . . . . . . . . . . . . . . .

2,501 -3,000 grams . . . . . . . . . . . . . . . .

3,001 .3,500 grams....,,,.,.. . . . . .

3,501 -4,000 grams . . . . . . . . . . . . . . . .

4,0014,500 grams . . . . . . . . . . . . . . . .

4,501 grams ormore . . . . . . . . . . . . . . .

Pe~ce&age distribution

100.0 100.0 100.0 100.0 100.0 100.0 10?.0 100.0 100.0

0.0

0.1

0.9

7.7

26.6

40.1

19.8

4.1

0.7

100.0

0.0

0.0

0.2

2.2

15.0

39.6

31.7

9.3

1.9

100.0

0.7

0.7

1.5

5.0

18.2

38.1

26.7

7.6

1.5

100.0

0.5

0.6

1.3

4.5

17.2

38.1

28.2

8.0

1.6

100.0

72.4

3.2

1.9

1.3

4.6

8.3

6“.5

0.9

0.7

100.0

67.6

22.6

5.3

1.5

1.0

1.2

0.6

0.1

0.0

100.0

10.6

34.8

32.5

12.5

4.4

3.4

1.5

0.4

0.0

100.0

0.7

5.9

24.6

35.7

17.9

10.3

3.9

0.8

0.2

100.0

0.1

0.7

5.6

23.2

28.0

24.0

13.6

3.8

1.0

100.0

1.0

1.2

2.5

8.3

25.3

37.1

18.9

4.6

1.2

72.3

6.0

1.7

2.0

6.0

7.8

3.5

0.3

0.3

62.8

21.7

7.1

2.9

2.9

1.9

0.7

0.1

10.7

31.8

31.5

13.8

6.4

4.1

1.3

(3.3

0.1

1.2

6.7

25.0

31.5

17.8

12.3

4.4

0.8

0.2

0.2

1.0

6.4

23.6

24.1

25.0

13.6

4.5

1.8

0.0

0.2

1.6

11.4

33.2

37.1

13.5

2.4

0.5

0.0

0.1

0.5

5.4

25.0

40.5

21.7

5.4

1.4

2.3

1,.9

3.3

8.9

24.1

35.6

18.7

4.2

1.1

Table K. Median weights of live births,by period of gestation and color

Period of gestation

Color Total Under 40

20

20-27 28-31 32-35 36 37-38 weeks Not

wee ks weeks weeks waeks wee ks and stated weaks

ovar

Median weight in grams

Total . . . . . . . . . . . . . . . . . . . . 3,310 (’) (’) 1,590 2,270 2,870 3,170 3,380 3,300 — — _

White . . . . . . . . . . . . . . . . . . . . . . .

Another, . . . . . . . . . . . . . . . . . . . .

3,340

3,160

(’)

(’)

(’)

(’)

1,570

1,620

2,260

2,270

2,870

2,890

3,180 3,410

3,050 3,240

3,310

3,130

1Lessthan 1,000 grams.

19
the lowest. On the other hand, infants whose

birth weight was between 2,501 and 3,000

grams (the birth weight group most typical of

infants whose gestational periods were 36

weeks) experienced infant mortality rates that

varied from a low of 1,593.5 for those infants

whose length of gestation was 37-39 weeks to a

high of 6,888.5 for infants whose gestational

period was 28-31 weeks. In this case the highest

rate was only about 330 “percent greater than the

lowest. Infants weighing 1,000 grams or less had

the least variation in their rates by length of

gestation, 57 percent, while those weighing

2,001-2,500 grams at birth had the most varia;

tion, 379 percent. When length of gestation was

held constant, the extremes were 4,797 percent

and 8,655 percent for infants whose lengths of

gestation were 36 weeks and 40 weeks or more,

respectively. In the foregoing comparisons, differences were not considered when the number

of deaths in a given cell of table 17 was less

than 20. The infant mortality rate for infants

whose period of gestation was not stated appeared to be nearer the rates for infants

whose lengths of gestation were under 36 weeks

than to any other gestational interval when their

birth weights were 2,500 grams or less. Above

2,500 grams, the rates for this group were

intermediate between those of 36 weeks and

37-39 weeks for all birth weight groups.

The most favorable length of gestation for an

infant was 37-39 weeks if he weighed 4,000

grams or less at birth. For infants weighing more

than 4,000 grams, the chances of survival were

best if the gestational period was at least 40

weeks.

As a general rule, mortality rates in each

length of gestation category dropped as birth

weight increased, from 1,000 grams or less to

3,501-4,000 grams. Thereafter the rates rose

with increasing birth weight. However, the number of deaths of infants weighing more than

4,000 grams in each ot the lowest four categories of length of gestation was too small to

give reliable rates.

The neonatal mortality rate for all periods of

gestation fell sharply as birth weight increased,

reaching a low of 364.3 per 100,000 live births

in the birth weight group 3,501-4,000 grams.

Further increases in birth weight raised the rate

markedly, reaching a rate of 874.3 for infants

weighing 4,501 grams or more at birth. The

curve of the neonatal mortality rates by birth

weight had the same shape for all periods of gestation for which a sufficient number of deaths

were available to calculate meaningful rates.

The postneonatal probabilities of dying also

decreased with increasing birth weight, reaching

the lowest values for infants whose birth weights

were between 3,501 and 4,500 grams. However,

these probabilities started at a much lower level

than the neonatal mortality rates for infants

weighing 1,000 grams or less and declined less

sharply with increasing birth weight. As a result,

between 2,501 and 4,500 grams an infant had

approximately equal chances of surviving the

neonatal and postneonatal periods. At all other

birth weights, the chances were much better of

surviving the postneonatal period despite the

fact that this period is approximately 12 times

the length of the neonatal period.

For infants whose birth weights were not

stated, both the neonatal mortality rates and the

postneonatal probabilities were somewhat higher

at all birth weights than the corresponding

figures for all periods of gestation. Of all the

periods of gestation under discussion, the rates

for the gestation-not-stated group most closely

approximated those for infants with 36 weeks of

gestation, being somewhat higher for birth

weights of 2,500 grams or less and somewhat

lower for all other birth weights. This was true

of both neonatal rates and postneonatal probabilities.

When birth weight, length of gestation, and

color were considered simultaneously in both

the neonatal and postneonatal periods, certain

patterns became clear. During the neonatal

period, the rates for white infants exceeded

those of the remainder of the population at all

birth weights up to 3.000 grams, at which Point

the rates for whites became lower and remained

lower for all subsequent birth weight groups.

This was generally true regardless of the length

of gestation, but it was less pronounced for

infants with gestational periods of less than 36

weeks. During the postneonatal period when all

periods of gestation were combined, the probability of a white infant dying was less than the

corresponding probabilityy for infants of other

races for all birth weight groups. This also, with

very few exceptions, was true for each period of

gestation.

The general level of the neonatal and postneo20
natal rates for infants whose length of gestation

was not stated differed substantially by color.

For whites weighing 2,500 grams or less at birth,

the neonatal mortality rates were somewhat

above those for infants whose length of gestation was stated to have been 36 weeks. The same

thing was true of the postneonatal probabilities

tit all birth weights up to 3,500 grams. Thereafter the reverse was true in both periods. For

infants in the remainder of the population,

however, both the neonatal rates and the postneonatal probabilities among infants with length

of gestation not stated were higher in every birth

weight group than the corresponding rates in

every category where the length of gestation was

known. There were a few scattered exceptions

to this rule, mainly in the groups that had

shorter periods of gestation.

Whether an infant is fully developed or not

may be measured by his birth weight or his

length of gestation. The common practice has

been to use one or the other of these as an index

of maturity—each with its own critical value that

separates mature infants from immature (low

birth weight) or premature (short gestation)

ones. When considering length of gestation, a

dividing line of 37 weeks between the first day

of the last normal menstrual period and the date

of termination of pregnancy is often used. When

the birth weight index is used, the value of

2,500 grams is taken as the criterion that

separates the mature from the immature. (In this

report the term “high risk” will be used in

discussing infants who are both immature and

premature.)

It is noteworthy that when the two indexes

are applied to the same group of births, they

designate as immature and premature two

~Toups that differ widely in their composition.

For example, of the 438,961 infants in the 1960

cohort of live births who were either premature

or immature, only 157,109 were both, that is,

high risk infants. The inadequacy of a single

index to investigate the phenomenon of prematurity or immaturity has been recognized by

many investigators.1 O-17 Attempts have been

made to use more than one of the indexes: birth

weight, length at birth, head circumference,

length of gestation, and others. When two

indexes were used, attention was usually focused

on the group of infants fulfilling both criteria.

Thus if length of gestation and birth weight were

the two indexes, the group which was singled

out for special attention was that of infants who

were of less than 37 weeks gestation and who

weighed 2,500 grams or less at birth.

The requirement that both criteria be fulfilled

is useful because it focuses attention on the ‘

most vulnerable group of infants. It would

appear, however, that for a more comprehensive

view of the phenomenon it is desirable to

investigate also those who weigh more than

2,500 grams but who are of less than 37 weeks

gestation and those whose gestation is 37 weeks

or more but whose weight at birth is 2,500

grams or less. Whether this additional subdivision of the births serves a useful purpose

depends in the final analysis on whether the

different groups are distinguishable in their

ability to adapt to the extrauterine environment.

Although the most critical measure for the latter

is probably the neonatal mortality rate, this

report will also examine the postneonatal and

infant mortality rates.

In this section, live births have been classified

according to the two main criteria: length of

gestation and birth weight. The respective points

of separation were the 37th week and 2,500

grams, which conform to usual and accepted

practices.18 !19 Live births were divided into the

four groups devised by Yerushalmyz O and are

shown in table L. In this arrangement, groups I

and II consist of infants who would be considered immature on the basis of low birth weight.

Groups I and III are comprised of infants who

would be considered premature if the length of

gestation were used as the only criterion.

As shown in table M, infants in group I had a

very high mort alit y during the first year of life;

nearly one-third died during this period, The

vast majority of these infants died during the

neonatal period. While infants in group II also

had high mortality during the first year of life,

their level of mortality was much less than that

Table L. Classification of live births, by weight and period of

gestation

Group

Groupl . . . . .

Groupll . . . . .

Group Ill . . . .

Group IV . . . .

Birth weight I Gestation

2,500 grams or less Under 37 weeks

2,500 grams or less 37 weeks and over

2,501 grams or more Under 37 weeks

2,501 grams or more 37 weeks and over

21
Table M. Infant, neonatal, and postneonatal mortality rates, by

color and four groups of birth weight and period of gestation

Group

s

Group I . . . . . . . . . .

Groupll . . . . . . . . .

Group ill . . . . . . . . .

Group IV . . . . . . . . .

Groups l,ll . . . . . . . .

Groups l,lll . . . . . . .

Group I . . . . . . . . . .

Groupil . . . . . . . . .

Group Eli . . . . . . . . .

Group IV . . . . . . . . .

Groups l,ll . . . . . . . .

Groups l,lll . . . . . . .

Group I . . . . . . . . . .

Group I l . . . . . . . . .

Group ill . . . . . . . . .

Group IV . . . . . . . . .

Groups l,ll . . . . . . . .

Groups l,lll . . . . . . .

Total IIWhite I

All

other

Infant mortality

per 100,000 live births

30,909.1 31,507.9 29,178.7

5,988.4 5,730.1 6,704.8

2,604.5 2,618.9 2,561.4

1,048.2 901.9 1,910.5

18,620.2 18,865.6 17,925.3

18,146.8 18,416.9 17,353.7

Neonatal mortality

par 100,000 live births

28,055.0 30,060.8 26,148.2

4,176.8 4,341.4 3,720.3

1,683.6 1,875.5 1,108.8

494.6 455.8 723.8

16,787.0 17,447.2 14,917.7

16,713.5 17,288.7 15,024.2

Postneonatal mortality

per 100,000 live births

1,854.1

1,811.6

920.9

553.6

1,833.2

1,433.3

1,447.1

1,388.7

743.4

446.2

1,418.4

1,128,2

3,030.5

2,984.6

1,452.6

1,186.7

3,007.5

2,329.5

experienced by infants in group I. Even though

the infant mortality rate for group III was 2?4

times that of group IV, it was less than half that

of group 11 and less than a tenth of the rate

experienced by infants in group I.

The three groups of infants that could be

expected to be at greater risk of dying were

distinguishable in their ability to survive the first

year of life, the neonatal period, and the

postneonatal period. Moreover, there were

marked differences between the mortality rates

by color in each of the three periods. In the

neonatal period, the rates for Negroes and other

races were about 14 percent below the rates for

whites in groups I and II and about 40 percent

lower in group 111. In group IV, however, they

had a rate about 60 percent higher than the rate

for white infants. The rates for both premature

and immature infants were about 14 percent

lower in the population of infants other than

white than in the population of white infants.

The advantage of lower mortality enjoyed by

infants of Negro and other races in groups I-HI

did not continue beyond the first 28 days of

life. In groups I-III the postneonatal rates for all

other races were between 95 and 115 percent

higher than the corresponding rates for white

infants. In group IV the excess mortality was

even greater, amounting to 166 percent. For

infants other than white, the rates for both

premature and immature infants were slightly

more than double the corresponding rates for

white infants.

When the entire first year of life was considered, a comparison of the rates by color was less

clear. Infants in groups I and HI had slightly

higher rates if they were white than if they

belonged to the remainder of the population,

while for infants in group 11 the reverse was true.

For infants in group IV, however, those who

were not white experienced a rate that was more

than double the one observed for white infants.

Immature or premature white infants had

slightly less chance of surviving the first year of

Iife than their counterparts in the remainder of

the population.

In each of the three periods under discussion,

the rates were highest in group I and declined in

each successive group, reaching their lowest

point in group IV. This was true for both white

infants and for infants in the remainder of the

population.

It was of interest to note that the neonatal

rates for infants other than white were lower

than those for whites in each of the three

subgroups of high risk infants, including group

III, which was composed of infants who weighed

more than 2,500 grams and who were of less

than 37 weeks of gestation. It has previously

been observed that the neonatal mortality rate

among infants of low birth weight was lower

for Negroes than for whites in each subdivision

of the births by weight groups.z O This was often

taken as a reflection of the fact that Negro

births generally are of lower birth weight than

white births and, therefore, the Negro infant of

less than 2,500 grams may be more mature than

22
the small white infant. This explanation cannot

apply to group III infants who weighed more

than 2,.500 grams at birth and were of less than

37 weeks gestation. The more favorable rates for

the Negro infants in this group were therefore

not explainable on the basis of the overall lower

birth weight among Negroes. The rate among

mature infants (group IV) was considerably

higher for infants other than white than for

whites, Since the population other than white is

composed mainly of Negroes, the findings in this

report tend to corroborate those studies.

Table N presents the ratio of the rates for the

different subgroups to the rates for fully developed infants (group IV). Compared with the

latter, each of the groups of high risk infants

experienced significantly greater chances of

dying during the first year of life as well as

during each of the two time periods within the

first year. The greatest differences were in the

neonatal period, but the excess mortality persisted through the postneonatal period. The

differences were smaller but in the same direction as those observed during the neonatal

period.

Table N. Ratio of infant, naonatal, and postneonatal mortality for the three groups of high risk infants to the corresponding mortality

rates of mature infants (group IV)

Group

Group I . . . . . . . . . . . . . . . . . . . . . .

Group I l . . . . . . . . . . . . . . . . . . . . . .

Group ill . . . . . . . . . . . . . . . . . . . . .

Group lo . . . . . . . . . . . . . . . . . . . . .

SUMMARY

Infant mortality

Total

28.5

5.7

2.5

1.0

White

34.9

6.4

2.9

1.0

This report mesents data on the mortalitv .

experienc; in tLe first year of life of infants

born in 1960. Variables that have been considered include birth weight, period of gestation,

age at death, color, sex, plurality, and age of

mother.

The infant mortality rate for the 1960 livebirth cohort was 2,513.9 per 100,000 live births.

The rate varied greatly by birth weight, being

highest for the lightest babies and lowest for

infants weighing between 3,001 and 4,500 grams

at birth. The infant mortality rate also varied by

color and sex, but the variation was much less

than that observed among the various weight

groups. Since birth weight so greatly affected

infant mortality, rates by color and sex have

been analyzed after adjusting for birth weight.

Also since the mortality of very light infants

during the first week of life was extremely high,

a second set of rates (termed “probabilities of

All

other

15.3

3.5

1.3

1.0

Neonatal mortality I

Postneonatal mortality

Total

58.7

8.4

3.4

1.0

White

66.0

9.5

4.1

1.0 z

All

Total

other

36.1 3.3

5.1 3.3

1.5 1.7

1.0 1.0

f

Mhite

All

other

3.2 2.6

3.1 2.5

1.7 1.2

1.0 1.0

dying”) was calculated based on the number of

survivors rather than on the number of live

births.

Since the birth weight and the length of

gestation of an infant are highly correlated, it

was not surprising to find that the latter variable

also greatly affected an infant’s chances of

surviving the first year of life. The infant

mortality. rates were highest for infants whose

periods of gestation were less than 28 weeks and

dropped regularly with increasing time in utero,

reaching a low for those whose length of

gestation was at least 40 weeks. MortaEty rates

were also analyzed by age at death and period of

gestation, but care must be taken in interpreting

these findings since the various time intervals

were of unequal length.

Infant mortality rates by birth weight and age

of mother showed that mothers under 20 years

of age and 40 and over had a greater chance of

losing a child in the first year of life at all birth

weights above 1,000 grams. Furthermore, this

23
greater risk increased as birth weight increased,

reaching its maximum for infants weighing

4,001-4,500 grams at birth. In this weight group

the excess mortality amounted to 43 percent

(table H). Only when the infants weighed 1,000

grams or less at birth was the mortality rate of

infants of these mothers slightly lower than that

of other infants.

Within the neonatal period, the infant mortality rates for singlebirths tended to be higher than

those for plural births until an infant’s birth

weight reached 3,001 grams. Thereafter infants

born in plural deliveries had the higher rates.

During the postneonatal period, however, infants born in plural deliveries had a higher

probability of dying than their counterparts who

were born singly at all birth weights except

1,501-2,000 and 2,001-2,500 grams.

Infant mortality not only varied greatly by

birth weight and by length of gestation but also

varied considerably by birth weight within any

given length of gestation category and to a

lesser extent by period of gestation within a

given birth weight group. Neonatal mortality

rates and postneonatal probabilities of dying

both exhibited patterns similar to the one for

infant mortality. The data presented by birth

weight and length of gestation confirmed the

findings of Yerushalmyz O that the division of

live births into subgroups which were categorized by both variables would be useful in the

study of infant loss. Infants fulfilling both

criteria (less than 37 weeks of gestation and a

birth weight of less than 2,500 grams) were the

most vulnerable; but those who met one and not

the other also suffered greater mortality. Even

the least vulnerable of these, those weighing

more than 2,500 grams at birth but with

gestational periods of less than 37 weeks, were

exposed to a risk of early death that was 2?12

times greater than the risk in the group that

fulfilled neither of the criteria.

REFERENCES

lDepartment of the Intenor: Censw Reports, VOI! IV,

Tweifth Census of the United States, 1900, Vital Statskts”cs,Part

IL Washington, U.S. Census Office, 1902.

2DePa~ent of the Interior: Census Reports, VO~ IIL

Twelfth Census of the United States, 1900, Vital Statistics, Part

1, Washington, U.S. Census Office, 1902.

3Natio~ ~nt~r for Health Statistics: International comparison of perinatal and infant mortality in the United States

and six West European countries. Vital and Health Statistics.

PHS Pub. No. 1000-Senes 3-No. 6. Public Health Service.

Washington. U.S. Government Printing Office, Mar. 1967.

4Hunt, E. P., and Chenoweth, A. D.: Recent trends in infant

mortilty in the United States. Am.J.Pub.Health 51:190-207,

Feb. 1961.

5Moriyasna, I. M.: Recent changes in the infant mortality

trend. Pub. Health Rep, 75(5) :391-405, May 1960.

6Shapiro, S., and Moriyama, I. M.: International trends in

infant mortality and their implications for the United States.

4

Am. .Pub.Health 53(5):747-760, May 1963.

National Center for Health Statistics: Infant and perinatal

mortilty in the United States. Vital and Health Statistics. PH8

Pub. No. 1000-Series 3-No. 4. Public Health Service. Washington.

U.S. Government Ihinting Office, Oct. 1965.

‘National Center for Health Statistics: A study of infant

mortilty from linked records: Method of study and registration

aspects. Vital and Health Statistics. PHS Pub. No, 1000-Senes

20-No. 7. Public Health Service. Washington. U.S. Government

Printing Office, Feb. 1970.

‘Nationsl Center for Health Statistics: Weight at b~th and

smvival of the newborn, United States, early 1950, by S. Shapiro

and J. Unger. Vital and Health Statistics. PHS Pub. No.

1000-Senes 2 l-No. 3. Public Health Service. Washington. U.S.

Government Printing Office, July 1965.

lODUSIIIStm, E. C.: Definitions and cxiteria of prematurity, in

W. A. Silverman, cd., Premature Infants, edition 3. New York.

24

Paul E. Hoeber, Inc., Medical Book Dept. of Harper & Row,

Publishers, Inc., 1961.

1lLesinski, J.: Relationship between length of gestation,

birth weight and certain other factors: Statistical study, Bulletin

WHO 26:183-191,1962.

12McKeown, T., and Gibson, J. R.: Observations on all

births (23,970) in Bwrningham, 1947: IV. Premature birth.

Brit.lf.]. 2(4730):513-517, Sept. 1951.

13Montgomery, T. A., Hammersly, M., and Lewis, A.: Perinatal mortdlty and survivial, part II, Comparisons between

population groups in 1959. Cahjl’s Hlth., Vol. 21, No. 9, Nov. 1,

1963.

l%eckbam, C. H.: Statistical studies on prematurity: IL

Mortalky of prematurity and effect of certain obstetric factors.

J.Pediatrics 13:484-497, Oct. 1938.

15San Diego reports on trial revision of the birth certificate,

{6

Cali .’s Hlth. 13:141-143, March 15,1956.

Schlesinger, E. R., and Allaway, N. C,: The combined

effect of buth weight and length of gestation on neonatal

mortality among single premature births. Pcdaiztn”cs

i

15(6 :698 -704, June 1955.

1 Steiner, M., and Pomcrance, W.: Studies on prematurity:

II. Inftuence of fetal maturity on fatality rate. Pediatrics

6@ki72-877’Dee” World 1950. Health Organization: Manual of the International

Statistical CLrss~ication of Diseases, Injun”es, and Causes of

Death, Based on the Recommendations of the Seventh Revision

Conference, 1955. Geneva. World Health organization, 1957.

19World Health Organization Expert Group on Prematurity: Final report. Tech.Rep.Ser. Wld.Hlth. Org., No. 27. Geneva,

OCL 1950.

20Yerushalmy, J., et al,: BA weight and gestation as

indices of “immaturity’’-neonatal and congenital anomalies of

the “immature,” Am.J.Dis.Child 109(1) :4?3-57,Jan. 1965.
LIST OF DETAILED TABLES

Table 1,

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

15.

Deaths under 1 year of age, by birth weight, color, sex, and age at death: United States, 1960 Iive-bkth cohort . .

Infant mortality rates per 100,000 live births, by birth weight, color, sex, and age at death: United States, 1960

Iive-birth cohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8itihsand suwivors atselected ageintewals upto2months, by birth waight, color, and sex: United States, 1960

Iive-birthcohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

‘Probabilities of dying per 100,000 survivors, by birth waight, color, sex, andage at death: United States, 1960

liva-birthcohort ..,..... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Deaths under 1 year of age, by period of gestation, color, sex, andage at death: United States, 19601 ive-birth

cohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

lnfantmortality rates perl OO,OOOlive Mrths, bypefiodof gestation, color, sex, andage atdeath: United States,

19601ive-birthcohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Births and survivors at selected ageintewals upto6months, byperiod ofgestation, color, and sex: United States,

19601ive-birthcohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Probabilities of dying per 100,000 survivors, by period of gestation, color, sex, and age at death: United States,

19601ive-birthcohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Deaths under 1 year of age, by birth weight, plurality of birth, color, age of mother, andage at death: United

States,19601ive-birthcohort. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Infant mortality rates per 100,000 live births, by birth weight, age of mother, plurality, color, and age at

death: UnitedStates,19601iva-birth cohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Births and survivors to28days, bytirth weight, plurality, color, and age of mother: United States, 19601 ive-birth

cohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . .

Probabilities of dying at S&S 28 days-11 months per 100,OOOsurvivors, by birth weight, plurality, color, and age of

mothar: UnitedStates,1960 Iive-birthcohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Deaths under 1 year of age, by birth weight, color, plurality, and age at death: United States, 19601 ive-birth

cohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Infant mortality rates perl OO,OOOlive births, by birth weight, color, plurality, andaga at death: United States,

19601ive-Wthcohort .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Births and survivors atselected age intervals upto28days, by birth weight, color, and plurality: Unitad States,

19601ive-birthcohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page

27

30

33

35

38

41

44

46

49

58

65

70

73

76

79

25
LIST OF DETAILED TABLES–Con.

Page

Table 16.

17.

18.

19.

20.

Probabilities of dying per 100,000 survivors, by birth weignr, color, plurality, and age at death: United States,

19601 ive-birth cohort ..,... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Deaths underfl year of age, by birth weight, age atdeath, color, and period of gestation: United States, 1960

Iive-birthcohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Infant mortality rates per 100,000 live tirths, by Mrth~ight, ageatdeath, color, andperiod of@station: Unitad

States,19601iva-birthcohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Births and survivors to 28 days, by birth weight, color, and period of gestation: United States, 19601 ive-birth

cohort . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . .- . . . . . . . -. . . . . . . . . . . . . . . .

Probabilities of dying at ages 28 days-n months per 100,000 survivors, by birth weight, color, and period of

gestation: UnitadStates,19601iva-birth cohort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

81

82

85

88

90

26
Tablel, Deaths unaerl yearofage, by birth weight, color, sex, andage at death: United States, 19601 ive-birthconor~

Birth weight

I

3,001 3,501

to to

3,500 4,000

grams grams

I

4,501

grams

or

more

Color, sex, and

age at death

1,000

grams

or

less

1,001

to

1,500

1,501 2,001

to to

2,000 2,500

grams grams

2,501

to

3,000

grams

4,001

to

4,500

grams

Total

grams

TOTAL

Both sexes Number of deaths under 1 year of age

Under 1 year of age . . . . . . 107,038 22,359 15,225 12,789 12,709 14,950 16,400 9.083 2,647 S76

Under 28days . , . . . . .

Undar7days , . . , . ,

7.13days, . . . . . . .

14-20 days . . . . . . . .

21-27 days . , . . . . . .

28 days-11 months . . . , .

28-59 days . . . , . . . .

2.11 months . . . . . . .

78,330

70,031

4,091

2,387

1,821

28,708

6,933

21,775

61,651

45,442

40,767

2,265

1,373

1,037

16,208

3,984

12,225

46,387

32,888

29,264

1,826

1,014

784

12,499

2,949

9,550

22,202

21,748

339

78

37

157

54

103

11,838

11,766

11,684

130

39

13

72

22

50

10,521

10,436

10,164

208

39

24

85

32

53

14,474

13,507

640

211

116

751

233

518

8,885

8,489

7,966

350

114

59

396

117

279

6,340

5,985

5,547

290

97

57

355

116

239

11,179

10,349

490

209

131

1,610

430

1,180

7,713

6,860

6,410

270

105

75

853

231

622

5,076

4,319

3,939

220

104

56

757

199

558

9,010

7,899

505

328

278

3,699

986

2,713

7,328

5,403

4,844

256

169

134

1,925

529

1,396

5,381

3,607

3,055

249

159

144

1,774

457

1,317

7,817

6,249

670

506

382

7,133

1,803

5,330

8,263

4,501

3,633

366

278

224

3,762

977

2,785

6,687

3,316

2,616

340

228

168

3,371

826

2,545

7,581

5,714

801

569

497

8,819

2,013

6,806

9,536

4,504

3,388

479

343

284

5,032

1,190

3,842

6,664

3,077

2,316

322

226

213

3,787

823

2,964

4,149

3,059

453

364

273

4,934

1,043

3,891

5,724

2,642

1,942

287

237

176

3,082

664

2,418

3,359

1,507

1,117

166

127

97

1,852

379

1,473

1,341

1,042

140

86

73

1,306

293

1,013

1,763

891

682

91

64

54

872

198

674

884

450

360

49

22

19

434

95

339

577

464

53

36

24

299

78

221

601

386

308

36

24

18

215

56

159

275

191

156

17

12

6

84

22

62

Male

Undar 1 year of age . . . . . .

Under 28days . . . . . . .

Under 7 days . . , . . .

7.13days . . . . . . . .

14-20 days . . . . . . . .

21-27 days . . . . . . . .

28 days-l 1 months . . . . .

28.59 days , . . . . . . .

2-n months . . . , . . .

Female

Under 1 year of age . . . . . .

Under 28days . . . . . . .

Under 7 days . . . . . .

7-13days . . . . . . . .

14-20 days . . . . . . . .

21-27 days , . . . . . . .

28 days-11 months . . . . .

28-59 days . , . . . . . .

2-n months . . , . . , .

27
Table 1. Deaths under 1 year of age, by birth weight, color, sex, and age at death: United States, 1960 Iivi-birth cohort-Con.

Birth weight

m

1,000

grams

or

less

1,001

to

1,500

grams

3,001

to

3,500

grams I

4,001 4,501

to grams

4,500 or

grams more

Color, sex, and

age at death

3,501

to

4,000

grams

Total

WHITE

Both sexes Number of deaths under 1 year of age

Under 1 year of age . . . . . . 79,819 16,256 11,536 10,001 9,486 10,766 12,154 6,966 2,015 649

Under 28days . . . . . . .

Under 7 days . . . . . .

7-13days . . . . . . . .

14-20 days . . . . . . . .

21-27 days . . . . . . . .

28 days-11 months . . . . .

28-59 days . . . . . . . .

2-n months . . . . . . .

60,773

55,007

2,980

1,594

1,192

19,046

4,628

14,418

46,386

35,537

32,225

1,686

943

683

10,849

2,705

8,144

33,433

25,236

22,782

1,294

651

509

8,197

1,923

6,274

16,166

15,900

208

39

18

90

25

65

8,693

8,651

8,537

88

20

6

42

11

31

7,563

7,515

7,363

121

19

12

48

14

34

11,124

70,5?3

431

119

61

412

144

268

6,795

6,567

6,231

238

69

29

228

75

153

4,741

4,557

4,282

193

50

32

184

69

115

9,064

8,534

337

119

74

937

267

670

6,088

5,574

5,276

?95

61

42

514

149

365

3,913

3,490

3,258

142

58

32

423

118

305

7,341

6,623

361

193

164

2,145

551

1,594

5,581

4,459

4,083

192

101

83

1,122

302

820

3,905

2,882

2,540

169

92

81

1,023

249

774

6,253

5,150

517

333

253

4,503

1,168

3,335

5,95B

3,600

2,997

282

180

141

2,358

642

1,716

4,798

2,653

2,153

235

153

112

2,145

526

1,619

6,016

4,620

636

477

343

6,?38

1,412

4,726

7,048

3,563

2,741

377

252

193

3,485

828

2,657

5,106

2,453

1,879

259

‘165

150

2,653

584

2,069

3,328

2,496

347

280

205

3,638

785

2,853

4,417

2,127

1,585

221

188

133

2,290

509

1,781

2,549

1,201

91?

126

92

72

1,348

276

1,072

1,036

804

107

69

56

979

220

759

1,354

692

528

68

53

43

662

149

513

661

344

276

39

?6

13

317

71

246

445

367

35

25

18

204

56

148

452

304

247

25

19

13

148

40

108

197

141

120

10

6

5

56

16

40

Male

Under 1 year of age . . . . . .

Under 28days , . . . . . ,

Under 7days . . . . . .

7-13days . . . . . . . .

14-20 days . , . . . . . .

21-27 days .,. . . . . .

28 days-11 months . . . . .

28-59 days . ,. . . . . .

2-n months . , . . . . .

Female

Under 1 year of age , , . , . .

Under 28days . . . . . . .

Under 7days . . . . . .

7-13days . . . . . . . .

14-20 days . . . . . . . .

21-27 days . . . . . . . ,

28 days-11 months . . . . .

28-59 days.....,.,

2-n months . . . . . . .

28
Table 1. Deaths under 1 year of age, by birth weight, color, sex, and age at death: United States, 1960 live-birth cohort–Con.

Color, sex, and

age at death

PI 1 OTH EF(

Both sexes

Under 1 year of age . . . . .

Under 28days . . . . . .

Under 7days . , , . . ,

7-13days . . . . . . . .

14-20 days . . . . . . .

21-27 days . , . . . . . ,

28 days-n months . . . . ,

28-59 days . . . . . . . ,

2.11 months . . . . . . .

Male

Undar 1 year of age . . . . . .

Undar28days . . . . . . .

Under 7days , . . . . .

7.13days . . . . . . . .

t4-20days . . . . . . . .

21-27 days . . . . . . . .

28 days-11 months . . . . .

28-59 days , , . . . . . .

2-n months . . . . . . .

Female

Under 1 year of aga , . . . . .

Under 28days . . . . . . .

Under 7days . . . . . .

7-13days . . . . . . . .

14-20 days . . . . . . . .

21-27 days . . . . . . . .

28 days-11 months . . . . .

28-59 days . ,. . . . . .

2-11 months . . . . . . .

Birth weight

Total 1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to to to to to to grams

or 1,500 2,000 2,500 3,000 3,500 4,000 4,500 or

less grams grams grams grams grams grams grams more

Nupber@f deaths under 1 yaar of age

27,21<

17,55i

?5,02~

1,111

79:

62$

9,665

2,30~

7,357

15,26E

9,905

8,542

579

430

354

5,360

1,279

4,081

11,954

7,652

6,482

532

363

275

4,302

1,026

3,276

6,103

6,036

5,848

130

39

19

. 67

29

38

3,145

3,115

3,047

42

19

7

30

11

19

2,958

2,921

2,801

88

20

12

37

18

19

3,689

3,350

2,994

208

92

55

339

89

250

2,080

1,922

1,735

112

45

30

168

42

126

1,599

1,428

1,259

97

47

25

171

47

124

2,788

2,115

1,815

153

90

57

673

163

510

1,625

1,286

1,134

75

44

33

339

82

257

1,163

829

681

78

46

24

334

81

253

3,223

1,669

1,276

144

135

114

1,554

435

1,119

1,747

944

761

64

68

51

803

227

576

1;476

725

515

80

67

63

751

208

543

4,194

1,564

1,089

153

173

139

2,630

635

1,995

2,305

901

636

84

98

83

1,404

335

1,069

1,889

663

463

69

75

56

1,226

300

926

4,246

1,565

1,fX)4

165

152

154

2,681

601

2,080

2,488

941

657

102

91

91

1,547

362

1,185

1,758

624

437

63

61

63

1,134

239

685

2,117

821

563

106

84

6B

1,296

25B

1,038

1,307

515

357

66

49

43

792

155

637

810

306

206

40

35

25

504

103

401

632

305

238

33

17

17

327

73

254

408

199

154

23

11

11

210

49

161

223

106

84

10

6

6

1?7

24

93

227

132

97

18

11

6

95

22

73

149

82

61

11

5

5

67

16

51

78

50

36

7

6

1

28

6

22

28
Table 2. Infant mortality rates per 100,000 live births, by birth weight, color, sex, and age at death: United States, 1960 live-birth

Color, sex, and

age at death

TOTAL

Both sexes

Under 1 year of age . . . .

Under 28 days . . . . .

Under 7 days . . . .

7-13days . . . . . .

14-20 days . . . . .

21-27 days . . . . .

28 days-11 months . . .

28-59 days , . . . .

2-11 months . . . . .

Male

Under 1 year of age . . . ,

Under 28 days . . . . .

Under 7 days . . . .

7-13days . . . . . .

14-20 days . . . . .

21-27 days . . . . .

28 days-11 months . . .

28-59 days . . . . .

2-11 months . . . . .

Female

Under 1 year of age , . . .

Under 28 days . . . . .

Under 7 days . . . .

7-13days . . . . . .

14-20 days . . . . .

21-27 days . . . . ,

28 days-11 months . . .

28-59 days . . . . .

2-11 months . . . . .

Total

2,513.9

1,839.7

1,644.8

96.1

56.1

42.8

674.2

162.8

511.4

2,828.4

2,084.8

1,870.3

103.9

63.0

47.6

743.6

182.8

560.9

2,184.0

1,582.6

1,408.2

87.9

48.8

37.7

601.5

141.9

459.5

cohort

w

II ,925.3

)1,279.9

19,413.3

1,393.7

320.7

152.1

645.5

222.0

423.5

)3,529.3

)2,960.4

)1,522.5

1,027.1

308.1

102.7

568.9

173.8

395.0

10,185.2

19,456.5

)7,125.0

1,791.5

334.3

205,7

728.6

274.3

454.3

54,853.0

52,147.3

48,663.4

2,305.8

760.2

417.9

2,705.7

839.5

1,866.3

61,301.2

58,569.7

54,960.7

2,414.8

786.5

407.1

2,732.2

807.2

1,924.9

47,805.8

45,128.9

41,781.0

2,186.7

731.4

429.8

2,676.8

874.7

1,802.1

8irth weight

m

Rate per 100,000 Iiva births

20,659.1

18,053.3

16,717.6

791.5

337.6

211.6

2,600.8

,694.6

1,906.1

25,440.3

22,626.8

21,142.6

890.6

346.3

247.4

2,813.5

761.8

2,051.6

16,069.9

13,673.3

12,470.3

696.5

328.2

177.3

2,396.6

630.0

1,766,5

5,844.9

4,143.7

3,632.8

232.3

150.8

127.9

1,701.2

453.5

1,247.7

7,464.6

5,503.7

4,934.3

260.8

172.2

136.5

1,960.9

538.9

1,422.0

4,511.8

3,024.3

2,561.5

208.8

133.3

120.7

1,487.4

383.2

1,104.3

1,899.5

993.2

794.0

85.1

64.3

49.8

906.3

229.1

677.2

2,402.3

1,308.6

1,056.2

106.4

80.8

65.1

1,093,7

284.0

808.7

1,509.2

748.4

590.4

68.6

51.5

37.9

760.8

186.4

574.4

1,014.5

469.0

353.5

49.6

35.2

30.7

545.5

124.5

421.0

1,205.9

568.5

428.7

60.6

43.4

35.9

636.3

150.5

485.8

831.3

372.6

280.5

39.0

27.4

25.8

458.6

99.7

359.0

3,501

to

4,000

grams

797.4

—

364.3

288.6

39.8

32.0

24.0

433.2

91.6

341.6

8B9.6

410.6

301.8

44.6

36.8

27.4

479.0

103.2

375.8

677.7

304.1

225.4

33.5

25.6

19,6

373.7

76.5

297.2

4,001

4;00

grams

832.9

421.9

327.9

44.1

27.1

23.0

410.9

92.2

318.7

876,8

443.1

338.2

45.3

31.8

26.9

433,7

98.5

335.2

757.3

385.5

308.4

42.0

18,8

16.3

371.8

81.4

290.4

4,501

grams

or

more

1,327.4

874.3

703.1

80.3

54.6

36.4

453.1

118,2

334.9

1,341.1

861.3

687.3

80.3

53.6

40.2

479.B

125.0

354.8

1,248.4

901.8

736.5

80.3

56.7

28,3

396.6

103.9

292.7

30
Table 2. Infant mortality rates per 100,000 live births, by birth weight, color, sax, and age at daath: United Statas, 1960 live-birth

Color, sax, and

age at death

YiH.!IE

Both saxes

Under 1 yaar of aga . . .

Under 28 days . . . .

Under 7 days . . .

7-13days . . . . .

14-20 days . . . .

21-27 days . . . .

28 days-l 1 months . . .

28-59 days . . . . .

2-11 months . . . . ,

Male

Under 1 year of age . . . .

Under 28 days . . . . ,

Under 7 days . . . .

7-13days ,.. . . .

14-20 days . . . . .

21-27 days . . . . .

28 days-11 months . . .

28-59 days . . . . .

2-11 months . . . .’.

Female

Under 1 year of age . . . .

Under 28 days . . . . .

Under 7 days . . . .

7-13days ,. . . . .

14-20 days . . . . .

21-27 days . . . . .

28 days-11 months . . .

28-59 days . . . . .

2-11 months . . . . .

cohort—Con.

II

Total

2,216.7

1,687.8

1,527.7

82.8

44.3

33.1

528.9

128.5

400.4

2,509.8

1,922.8

1,743.6

91.2

51.0

37.0

587.0

146.4

440.6

1,907.7

1,400.0

1,299.9

73.8

37.1

29.0

467.7

109.7

358.0

1,000 I 1,001

grams to

or 1,500

less grams

92,928.6

92,414.1

90,893.5

1,194.8

222.9

102.9

514.5

142.9

371.6

94,550.8

94,094.0

92,854.0

957.1

217.5

65.3

456.8

119.6

337.2

31,131.5

30,553.1

B8,721 .5

1,458.0

22B.9

144.6

578.4

168.7

409.7

57,564.9

55,509.0

52,460.1

2,150.7

593.8

304.4

2,055.9

718.6

1,337.3

63,433.5

61,305.1

58,168.4

2,221 .B

644.1

270.7

2,128.5

700.1

1,428.3

50,825.5

48,852.9

45,904.8

2,069.0

536.0

343.1

1,972.6

739.7

1,232.8

Birth weight

Ra

21,895.!

19,844.1

18,683.8

737.8

260.5

162.C

2,051.4

584.6

1,466.9

26,825.3

24,560.5

23,247.4

859.2

268.8

185.1

2,264.8

656.5

1,608.3

17,027.1

15,186.5

14,176.9

617.9

252.4

139.2

1,840.7

513.5

1,327.2

per 100,000. live b

5,815.0

4,500.1

4,059.9

221.3

118.3

100.5

7,314.9

337.8

977.1

7,525.9

6,012.9

5,505.9

258.9

136.2

111.9

1,513.0

407.2

1,105.8

4,388.9

3,239.1

2,854.8

189.9

103.4

91.0

1,149.8

279.9

869.9

1,731.8

1,006.8

829.2

83.2

53.6

40.7

725.0

188.1

637.0

2,210.1

1,335.4

1,111.7

104.6

66.8

52.3

847.7

238.1

636.5

1,365.0

754.8

612.5

66.9

43.5

31.9

610.2

149.6

460.6

1s

885.3

438.2

336.5

46.3

30.4

25.0

447.1

102.9

344.2

1,057.0

534.4

411.1

56.5

37.8

28.9

522.7

124.2

398.5

723.1

347.4

266.1

36.7

23.4

21.2

375.7

82.7

293.0

686.4

327.9

245.9

34.2

27.~

20.2

358.5

77.3

281.1

771.3

371.4

276.8

38.6

32.8

23.2

399.9

88.9

311.0

576.4

271.6

206.0

28.5

20.8

16.3

304.8

62.4

242.4

700.4

360.1

279.5

37.2

24.0

19.5

340.3

76.5

263.8

741.5

379.0

289.2

37.2

29.0

23.5

362.5

81.6

280.9

629.1

327.4

262.7

37.1

15.2

12.4

301.7

67.6

234.1

1,120.7

768.4

633.7

60.4

43.2

31.1

352.3

96.7

255.6

1,135.3

763.6

620.4

62.8

47.7

32.7

371.7

100.5

271.3

1,088.6

779.1

663.1

55.3

33.2

27.6

308.4

88.4

221.0

31
Table 2. Infant mortality rates per 100,000 live births, by birth weight, color, sex, and aga at death: United Statas, 1960 live-birth

cohort-Con.

Birth weight

I

1,501 2,001

to to

2,000 2,500

grams grams

Color, sex, and

age at death

ALL OTHER

Both sexes

Underl yaarofaga . . . ,

Under 28days . . . . ,

Under 7days . . , ,

7-13days . . . . . ,

14-20 days . . . . .

21-27 days . . . . ,

28days-11 months . , .

28-59 days . . . . .

2-11 months . . . . .

Mala

Undar 1 year of age . . . .

Under 28 days . . , , .

Under 7 days . . . .

7-13days . . . . . .

14-20 days . . . . .

21-27 days . . . . .

28 days-11 months . . .

28-59 days . . . . .

2-11 months . . . . .

Famale

Under 1 year of aga . . . ,

Undar 28 days . . . . .

Under 7 days , . , .

7-13days . . . . . .

14-20 days . . , , .

21-27 days . . . . .

28 days-11 months . . .

28-59 days . . . . .

2-11 months , , . . .

1,000

grams

or

less

1,001

to

1,500

grams

2,501

to

3,000

grams

3,001

to

3,500

grams

3,501 4,001

to to

4,000 4,500

grams grams

4,501 Total

grams

or

more

Rate per 100,000 live births

4,142.3 89,355.8

88,374.8

85,622.3

1,903.4

571.0

278.2

981.0

424.6

47,809.7 17,179.1 5,935.0 2,527.3 1,742.4 1,704.9 2,087.4

——

1,012.2

789.8

109.5

56.4

56.4

1,085.2

242.3

842.9

2,213.1

1,076.8

833.3

124,5

59,5

59.5

1,136.3

265.1

871.2

1,913.8

909.7

720.9

85.8

51.5

51.5

1,004.1

206.0

798.1

2,808.0

2,671.9

2,286.4

169.1

120.7

95.7

1,470,4

350.8

43,416.3

38,802,5

2,708.7

1,192.3

712.8

4,393.5

1,153.4

3,240.0

55,261.8

50,819.7

45,875.2

2,961.4

1,189.8

793.2

4,442.1

1,110.5

3,331.6

40,645.7

36,298.9

32,003.1

2,465.7

1,194.7

635.5

4,346.7

1,194.7

3,152.0

13,032.2

11,183.7

942.8

554.6

351.2

4,146.9

1,004.4

3,142.5

21,317.1

16,870.0

14,876.0

983.9

577.2

432.9

4,447.1

1,075.7

3,371.4

13,513.8

9,632.8

7,913.1

906.3

534.5

278.9

3,881.0

941.2

2,938.8

3,073.4

2,349.7

265.2

248.6

208.9

2,861.6

801.0

2,060.6

7,275.2

3,931.2

3,169.1

266.5

283.2

212.4

3,344.0

945.3

2,398.7

4,872.6

2,393.4

1,700.1

264.1

221.2

208.0

2,479.2

686.6

1,792.6

942.5

662.3

92.2

104.2

83.8

1,584.8

382.6

1,202.2

3,099.1

1,211.4

855.1

112.9

131.8

111.6

1,887.7

450.4

1,437.3

2,062.9

724.0

505.6

75.4

81.9

61.2

1,338.8

327.6

1,011.2

642.2

448.S

67.7

62.4

63.:

1,100.2

246.E

853.5

2,005.9

758.7

529.7

82.2

73.4

73.4

1,247.2

291.9

955.4

1,469.2

521.5

365.2

52.7

51.0

52.7

947.7

199.7

748.0

661.2

453.4

85.4

67.7

54.s

1,043.7

207.8

836.0

1,847.6

728.0

504.7

93.3

69.3

60.8

1,119.6

219.1

900.5

1,516.1

572.7

385.6

74.9

65.5

46.8

943.3

192.8

750.6

1,632.9

1,199.9

222.7

136.1

74.2

1,175.2

272.1

903.0

2,979.4

1,638.7

1,219.8

220.0

100.0

100.0

1,339,7

319,9

1,019.8

2,530.0

1,621.8

1,167.7

227.1

194.6

32.4

908.2

194.6

713.6

1,119.6 556.4

4,604.6 90,817.2

2,987.8 89,950.9

2,576.6 87,987.3

174.7 1,212.8

129.7 548.7

106.8 202.1

1,616.8 866.3

385.8 317.6

1,231.0 548.7

3,671.5 87,852.7

2,350.2 86,753.8

1,990.8 83,189.8

163.4 2,613.6

111.5 594.0

84.5 356.4

1,321.3 1,098.9

315.1 534.6

1,006.2 564.3

II

32
Table 3. Births and survivors at selaated age intewals up to 2 months, by birth weight, color, and sex: United States, 1960 live-birth cohort

Birth weight

Total 1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to to to to to to grams

or 1,500 2,000 2,500 3,000 3,500 4,000

less

4,!330 or

grams grams grams grams grams grams grams more

Color, sex,

and age

IQIAL

Both sexes

Birth$ . . . . . . . . . . .

7days. . . . . . . . . . . . . . .

14days . . . . . . . . . . . . .

21 days . . . . . . . . . . . . .

28days . . . . . . . . . . . . .

2months ., . ., .,,.....

—Male

Births . . . . . . . . . . .

7days, . . . . . . . . . . . . .

14deys ..,..,,,,,,,.

21 days, . . . . . . . . . . . .

28days . . . . . . . . . . . . .

2months . . . . . . . . . . . . .

Female

Births . . . . . . . . . . .

7days, , ., . .,,.,,...

14days, . . . . . . . . . . . . .

21 days . . . . . . . . . . . . .

28days . . . . . . . . . . . . .

Zmonths. . . . . . . . . . . . .

WHITE

Both sexes

Baths . . . . . . . . . . . .

7driys . . . . . . . . . . . . . . .

14days, . . . . . . . . . . . . .

21 days . . . . . . . . . . . . . .

28days . . . . . . . . . . . . . .

2months . . . . . . . . . . . . .

Male —

Births . . . . . . . . . . . .

7deys, ,, . . . . . . . . . . . .

14days . . . . . . . . . . . . . .

21 days, . . . . . . . . . . . . .

26days . . . . . . . . . . . . . .

2months . . . . . . . . . . . . . .

Numbarofbirths andsurvivors

4,257,85( 24,323 27,75f 61 ,90( 217,43E 787,037 1,616,54: 1,138,04: 317,81C 66,994

4,187,81!

4,1 83,72[

4,161,34’

4,1 79,52(

4,172,5EK

2,1 79,70[

2,138,941

2,138,67(

2,135,30:

2,1 34,26[

2,130,282

2,078,142

2,048,87E

2,047,052

2,046,038

2,045,254

2,042,305

3,600,744

2,575

2,236

2,158

2,121

2,067

12,657

1,073

943

904

881

889

11,666

1,!X)2

1,283

1,254

1,230

1,198

17,493

14,24S

13,60!

13,39:

13,28;

13,04s

14,494

6,52E

6,17E

6,064

6,005

5,888

13,262

7,721

7,431

7,334

7.277

7,161

20,040

51,556

51 ,06t

50,857

50,72E

50,296

30,31 E

23$08

23,638

23,533

23,458

23.227

31,587

27,648

27,428

27,324

27,268

27,069

45,676

209,531

208,032

208,704

208,42E

207,44G

96,170

93,326

93,070

92,901

92,767

92,236

119,266

116,211

115,962

115,803

115,659

115,202

163,131

156,508

156,147

I 55,964

155,780

155,23?S

74,157

780,78Z

780,11E

779,612

779,22C

777,417

343,962

340,329

339,963

333,685

33S3,461

338,484

443.075

440,459

440,155

438,927

439,759

436,933

B21,089

1,61 0,82S

1,61 0,02&

1,609,45S

1,608962

1,606,94S

790#805

787,407

766,926

786,585

766,301

765,111

825,738

623,422

823,100

622,874

822,661

821,838

1,372,850

1,135,984

1,135,531

1,135,167

1,134,884

1,133,851

643,40!3

641,463

641,176

640,939

640,763

840,088

495,638

494,521

494,355

494,228

494,131

493,752

1,014,675

1,012,379

1,012,032

1,011,752

1,011,547

1,010,762

572,664

571,079

570,858

570,670

570,537

570,028

316,771

316,631

316,54K

316,472

316,17S

201,083

200,401

200,310

200,246

200,192

199,994

116,730

116,370

116,321

116,299

116,280

116,165

287,680

286,876

286,769

286,700

286,644

286,424

182,602

182,074

182,006

181,953

I81,91O

181,761

65,530

65,477

65,441

66,417

65,338

44,814

44,506

44,470

44,446

44,428

44,372

21,180

21,024

21,007

20,995

20;967

57,910

57,543

57,508

57,483

57,465

57,408

39,813

39,566

39,541

39,522

39,508

39,469

33

3,545,737

3,542,757

3,641,163

3,539,971

3,535,343

;,846,182

1,615,967

1,B14,281

1,613,338

1,812,655

1,808,950

1,583

1,384

1#345

1,327

1,302

9,194

657

569

549

543

532

9,527

9,086

B,977

8,916

6,772

10,7~2

4,481

4,243

4,174

4,145

4,070

37,142

36,605

36,686

36,612

36,345

22,695

17,419

17,224

17,163

17,121

16,972

515,839

515,422

515,069

514,836

513,668

268,586

266,589

266,307

266,127

265,986

?65,344

1,368,230

1,367,594

1,367,177

1,386,834

1,365,422

666,769

664,028

663,651

663,388

663,206

662,378

70,074

69,882

69,781

68,888

69,396
Table3. Bitisandsumivors atselmted a@intewlsup to2months, bytimhwi@tr color, andwx: Unitad States,19801ive-birth cohort-Cmr.

Color, sex,

and age

WHITE-Con.

Female

Maths. . . . . . . . . . . .

7days . . . . . . . . . . . . . . .

14days . . . . . . . . . . . . . .

21 days . . . . . . . . . . . . . .

28days . . . . . . . . . . . . . .

2months . . . . . . . . . . . . .,

ALLOTHER

Both saxes

births . . . . . . . . . . . .

7days . . . . . . . . . . . . . . .

14days . . . . . . . . . . . . . .

21 days . . . . . . . . . . . . . .

28days . . . . . . . . . . . . . .

2months . . . . . . . . . . . . . .

Male

.

Births . . . . . . . . . . . .

7days . . . . . . . . . . . . . . .

14days . . . . . . . . . . . . . .

21 days . . . . . . . . . . . . . .

28days . . . . . . . . . . . . . .

2months . . . . . . . . . . . . .

Female

births . . . . . . . . . . . .

7days . . . . . . . . . . . . . . .

14days . . . . . . . . . . . . . .

2“l days . . . . . . . . . . . . . .

28days . . . . . . . . . . . . . .

2months . . . . . . . . . . . . . .

Birth Weight

Total

1,752,552

1,728,770

1,728,476

1,727,825

1,727,318

1,725,393

657.106

642,082

640,97q

640,176

638,649

837,244

331,516

322,974

322,385

321,965

321,611

320,332

326,580

319,108

318,576

318,213

317,938

316,912

1,000

grams

or

less

8,299

936

815

796

784

770

6,830

982

852

813

794

765

3,483

416

374

355

348

337

3,367

566

478

458

446

428

w

9,328

5,046

4,853

4,803

4,777

4,702

7,716

4,722

-4,613

4,421

4,366

4,277

3,782

2,047

1,935

1,890

1,860

1,818

3,934

2,675

2,578

2,631

2,506

2,459

2,501

to

3,0Q0

grams

3,001

to

3,500

grams

22,981

19,723

19,581

19.523

19;491

19,373

16,229

14,414

14,261

14,171

14,114

13,951

7,623

6,489

6,414

6,370

6,337

6,255

8,606

7,925

7,847

7,801

7,777

7,696

Numbarofbhthsand survivors

8B,974

86,434

86,265

86,173

86,082

85,643

54,305

5i,028

52,865

52,750

52,636

52,201

24,013

23,252

23,188

23,120

23,069

22,842

30,292

29.777

29;697

29;630

29,567

28,359

351,503

349,350

349,115

348,962

348,850

348,324

165,948

184,649

184,886

184,523

184,X34

163,749

74,376

73,740

73,656

73,558

738475

73,140

91,572

91,109

91,040

90,865

90,808

90,609

706,081

704,202

703943

703,778

703,628

703,044

243,583

242,599

242,434

242,282

242,128

241,527

124,036

123,379

123,277

123,186

123,085

122,733

119,657

119,220

119,157

119$96

119,033

118,794

T

3,501 4,001

to to

4,000 4,600

grams grams

442,211

441,300

44’1,174

441,082

441,010

440,734

124,168

123,605

123,499

123,415

123,347

123,089

70,741

70,384

70,318

70,269

70,226

70,071

53,427

53,221

63,181

53,146

53,121

53,018

105,078

104,802

104,763

104,747

104,734

104,663

30,133

29,895

28,862

29,845

29,828

28,765

18,481

18,327

18,304

18,293

18,282

18,233

11,652

11,568

11,558

11,662

11,546

11,522

4,601

grams

or

more

18,097

17/977

17,967

17,961

17S56

17,940

8,084

7J387

7988

7368

7,852

7930

5,001

4,940

4,929

4,924

4,919

4,903

3,083

3,047

3,040

3,034

3,033

3,027

34
Table 4. Probabilities of dying perl OO,OOOsurvivors, by birth weight, color, sex, andage at death: United States, 1960 live-birth

Color, sex, and age

at death

TOTAL

Both sexas

Undarl year of age . . . .

Under 28days . . . . .

Under 7days . . . .

7-13days . . . . . .

14-20 days . . . . .

21-27 days . . . . .

28 days-11 months . . .

28-59 days . . . . .

2-11 months . . . . .

Male

Under 1 year of age . . . .

Under 28 days . . . . .

Under 7 days . . . .

7-13days . . . . . .

14-20 days . . . . .

21-27 days , . . . .

28 days-11 months . . .

28-59 days . . . . .

2-11 months . . . . .

Femala

Under 1 year of age . . . .

Under 28 days . , . . .

Under 7 days . . . .

7-13days . . . . . .

14-20 days . . . . .

21-27 days . . . . .

28 days-11 months . . .

28-59 days . . . . .

2-11 months . . . . .

Total

2,513.9

1,839.7

1,644.B

97.7

57.1

43.6

686.9

165.9

521.9

2,828.4

2,084.8

1,870.3

105.9

64.3

48.6

759.6

186.7

573.9

2,184.0

1,582.6

1,408.2

89.1

49.5

38.3

611.1

144.2

467.6

cohort

I

1,000 1,001

grams to

or 1,500

less grams

91,925.3

91,279.9

89,413.3

13,165.G

3,488.4

1,714.6

7,402.2

2,546.0

4,983.1

93,528.3

92,960.4

91,522,5

12,115.6

4,135.7

1,438.1

8,080.8

2,469.1

5,753.7

30,185.2

B9,456.5

B7,125.O

13,914.8

3,016.2

1,913,9

6,910.6

2,601.6

4,424.0

54,853.C

52,147.2

48,663.4

4,491.5

1,550.4

865.8

5,654.3

1,754.3

3,969.7

61,301.2

58,569.1

54,960.7

5,361.5

1,845.3

973.0

6,594.5

1,948.4

4,738.5

47,805,8

45,128.9

41,781.0

3,756.0

1,305.3

777.2

4,878.4

1,594.1

3,337.5

Birth weight

lEEEEEE

Probability of dying per 100,000 survivors ‘

20,659.1

18,058.3

16,717.6

950.4

408.3

257.6

3,173.9

847.7

2,346.1

25,440.3

22,626.8

21,142.6

1,128.3

444.2

318.7

3,636.3

984.7

2,677.9

16,069.9

13,673.3

12,470.3

795.7

379.2

204.9

2,776.1

729.8

2,061.4

5,844.S

4,143.7

3,632.E

241 .C

156.9

133.2

1,774.7

473.1

1,307.8

7,464.6

5,503.7

4,934.3

274.3

181.6

144.2

2,075.1

570.2

1,513.5

4,511.8

3,024.3

2,561.5

214.3

137.1

124.3

1,533.8

395.1

1,143.2

1,899.5

993.2

794.0

85.8

64.9

50.3

915.4

231.4

685.6

2,402.3

1,308.6

1,056.2

107.5

81.8

65.9

1,108.2

287.8

822.8

1,508.2

748.4

590.4

69.0

51.8

38.2

766.6

187.8

579.8

1,014.5

469.0

353.5

49.7

35.3

30.9

548.1

125.1

423.5

1,205.9

568.5

428.7

60.8

43.6

36.1

640.0

151.3

489.4

831.3

372.6

280.5

3?3.1

27.5

25.9

460.3

100.0

360.7

797.4

364.3

268.6

38.9

32.1

24.0

434.8

91.9

343.2

889.6

410.6

301.8

44.7

37.0

27.5

481.0

103.6

377.8

677.7

304.1

225.4

33.6

25.7

19.6

374.8

76.7

298.3

4,001

to

4,500

grams

832.9

421.9

327.9

44.2

27.2

23.1

412.7

92.6

320.4

876.8

443.1

339.2

45.4

32.0

27.0

435.6

98.9

337.0

757.3

385.5

308.4

42.1

18.9

16.3

373.2

81.7

291.8

4,501

grams

or

more

1,327.4

874.3

703.1

80.8

55.0

36.7

457.1

119.2

338.2

1,341.1

861.3

687.3

80.9

54.0

40.5

483.9

126.0

356.3

1,298.4

901.8

738.5

80.9

57.1

28.6

400.2

104.8

295.7

35

4
Table 4. Probabilities of dying per 100,000 survivors, by birth weight, color, sex, and age at death: United States, 1960 live-birth

cohort—Con.

.

Birth weight

2,501

to

3,000

grams

3,001

to

3,500

grams

3,501

to

4,000

grams

4,001

to

4,500

grams

4,501

grams

or

more

Color, sex, and age Total

at death

WHITE

Both sexas Probability of dying per 100,000 survivors

Under 1 year of age . . . . 2,216.7 92,928.6 57,564.9 21,895.5 5,815.0 1,731.8 885.3 686.4 700.4 1,120.7

Under 28 days . . . . .

Under 7 days . . . .

7-13days . . . . . .

14-20 days . . . . .

21-27 days . . . . .

28 days-11 months . . .

28-59 days . . . . .

2-11 months . . . . .

1,687.8

1,527.7

84.0

45.0

33.7

538.0

130.7

407.8

2,509.8

1,922.8

1,743.6

92.8

52.0

37.7

598.5

149.2

450.0

1,907.7

1,440.0

1,299.9

74.8

37.7

29.5

474.6

111.3

363.6

12,414.1

30,893.5

13,119.9

2,817.9

1,338.3

6,782.2

1,883.9

4,992.3

34,550.8

34,084.0

92,854.0

13,394.2

3,514.9

1,092.9

7,734.8

2,025.8

5,827.1

31,131.5

30,553.1

38,721.5

12,927.4

2,331.3

1,507.5

6,122.4

1,785.7

4,415.6

55,509.0

52,460.1

4,524.0

1,308.3

679.5

4,620.9

1,615.1

3,055.2

33,433.5

51,305.1

58,168.4

5,311.3

1,626.2

694.8

5,500.6

1,809.4

3,759.2

50,825.5

%8,852.9

$5,904.8

3,824.8

1,030.3

666.3

3,856.6

1,446.2

2,445.8

19,844.1

18,683.8

907.3

323.3

201.7

2,558.3

728.3

1,843.4

26,825.3

24,560.5

23,247.4

1,119.5

354.2

244.7

3,002.2

870.3

2,150.6

17,027.1

15,186.5

14,176.9

720.0

296.2

163.9

2,170.2

605.4

1,574.4

4,500.1

4,059.9

230.7

123.6

105.2

1,376.9

353.7

1,026.8

7,525.9

6,012.9

5,505.9

274.0

144.5

118.9

1,608.8

433.3

1,181.6

4,388.9

3,238.1

2,854.8

195.5

106.6

94.0

1,188.3

289.2

901.6

1,006.8

828.2

83.9

54.1

41.1

732.4

190.0

543.5

2,210.1

1,335.4

1,111.7

105.8

67.6

53.0

886.5

241.4

646.7

1,365.0

754.8

612.5

67.3

43.8

32.1

614.9

150.8

464.8

438.2

336.5

46.5

30.5

25.1

449.1

103.3

346.1

1,057.0

534.4

411.1

56.8

36.0

28.1

525.5

124.8

401.1

723.1

347.4

266.1

36.8

23.4

21.3

377.0

83.0

294.3

327.9

245.9

34.3

27.7

20.3

359.6

77.6

282.3

771.3

371.4

276.8

38.7

32.9

23.3

401.4

88.2

312.4

576.4

271,6

206.0

28.6

20.9

16.3

305.7

62.6

243.2

360.1

279.5

37.3

24.1

19.5

341.5

76.8

265.0

741.5

379.0

289.2

37.3

28.1

23.6

363.9

81.9

282.2

629.1

327.4

262.7

37.2

15.3

12.4

302.7

67.8

235.0

768.4

633.7

60.8

43.5

31.3

355.0

97.5

257.8

1,135.3

763.6

620.4

63.2

48.1

32.9

374.5

101.2

273.6

1,088.6

779.1

663.1

55.6

33.4

27.8

311.9

89,1

223.0

Male

Under 1 year of age . . , .

Under 28 days . . . . .

Under 7 days . . . .

7-13days . . . . . .

14-20 days . . . . .

21-27 days . . . . .

28 days-11 months . . .

28-59 days . . . . .

2-11 months . . . . .

Female

Under 1 year of age . . . .

Under 28 days . . . . .

Under 7 days . . . .

7-13days , . . . . .

14-20 days . . . . .

21-27 days . . . . .

28 days-11 months . . .

28-59 days . . . . .

2-11 months . . . . .

36
Table 4, Probabilities of dying per 100,000 survivors, by birth weight, color, sex, and age at death: United States, 1960 live-birth

Color, sex, and age

at death

ALL QTHER

Both sexes

Under 1 year of age . . . .

Under 28 days . . . . .

Under 7 days . . . ,

7-13days . . . . . ,

14-20 days . . . . .

21-27 days . . , . .

28 days-11 months . . .

28-59 days . . . . .

2-11 months . . . . ,

Male

Under 1 year of age . . . .

Under 28 days . . . . .

Under 7 days . , . .

7-13days ., . . . .

14-20 days . . . . .

21-27 days . . . . .

28 days-11 months . . .

28-59 days . . . . .

2-11 months . . . . .

Femala

Undar 1 year of age , , . .

Under 28 days . . . . .

Under 7 days . . . .

7-13days . . . . . .

14-20 days . . . . .

21-27 days . . . , .

28 days-11 months . . .

28-59 days . . . . .

2-11 ~onths . . . . .

cohort-Con.

Total

4,142.;

2,671 .~

2,286.4

173.C

123.7

98Z

1,510.s

360.L

1,1 54.!

4,604.C

2,987.E

2,576.6

179.3

133.4

109.s

1,666.6

397.7

1,274.C

3,671.5

2,350.2

I ,990.8

166.7

113.9

86,4

I ,353,1

322.7

I ,033.7

1,000

grams

or

less

B9.355.8

B8,374.8

B5,622.3

13,238.3

4,577.5

2,337.0

8,438.3

3,652.4

4,967.3

90,817.2

B9,950.9

37,987.3

10,096.2

5,080.2

1,971.8

8,620.7

3,160.9

5,638.0

37,852.7

36,753.8

33,189.8

I5,547.7

4,184.1

2,620.1

8,296.0

4,035.9

4,439.3

1,001

to

1,500

grams

47,809.7

43,416.3

38,802.5

4,426.1

2,038.6

1,244.1

7,764.5

2,038.5

5,845.2

55,261.8

50,819.7

45,875.2

5,471.4

2,325.6

1,587.3

9,032.3

2,258.1

6,930.7

40,645.7

36,298.9

32,003.1

3,626.2

1,823.1

987.8

6,823.6

1,875.5

5,042.7

8irth waight

I 1 I

1,501

to

2,000

grams

2,001 2,501

to to

2,500 3,000

grams grams

3,001

to

3,500

grams

I I I

Probability of dving per 100,000 survivors

17,179.1

13,032.2

11,183.7

1,061.5

631.1

402.2

4,768.3

1,154.9

3,655.7

21,317.1

16,870.0

14,876.0

1,155.8

686.0

518.1

6,349.5

1,294.0

4,108.7

13,513.8

9,632.8

7,913.1

984.2

586.2

307.7

4,294.7

1,041.5

3,287.4

5,935.0

3,073.4

2,349.7

271.5

255,3

216.1

2,952.4

8.26.4

2,143.6

7,275.2

3,931.2

3,169.1

275.2

293.3

220.6

3,480.9

984.0

2,521.7

4,872.6

2,393.4

1,700.1

268.7

225.6

212.6

2,540.0

703.5

1,849.5

2,527.3

942.5

662.3

92.8

105.0

84.5

1,599.9

386.3

1,218.3

3,089.1

1,211.4

855.1

113.9

133.1

112.8

1,910.9

455.9

1,461.6

2,062.9

724.0

505.6

75.7

62.4

61.6

1,348.6

330.0

1,022.0

1,742.4

642.2

4~.~

68.C

62.7

63.C

1,107.2

248.2

861.2

2,005.9

756.7

528.7

82.7

73.8

73.9

1,256.8

294.1

965.5

1,469.2

521.5

365.2

52.8

51.2

52.9

952.7

200.8

753.4

3,501

to

4,000

grams

1,704.9

661.2

453.4

85.8

68.0

55.1

1,050.7

208.2

843.3

1,857.6

728.0

504.7

93.8

69.7

61.2

1,127.8

220.7

908.1

1,516.1

572.7

385.6

75.2

65.8

47.0

948.8

193.9

756.3

4,001

to

4,500

grams

2,097.4

1,012.2

789.8

110.4

56.9

57.0

1,096.3

244.7

853.6

2,213.1

1,076.8

833.3

125.5

60.1

60.1

1,148.7

268.0

883.0

1,913.8

908.7

720.9

86.4

51.9

51.9

1,013.3

207.9

807.2

4,501

grams

or

more

2,808.0

1,632.9

1,199.9

225.4

136.0

76.4

1,194.7

276.7

920.6

2,979.4

1,638.7

1,219,8

222.7

101.4

101.5

1,362.1

325.3

1,040.2

2,530.0

1,621.8

1,167.7

229.7

197.4

33.0

923.2

197.8

726.8

37
Table 5. Deaths under 1 year of age, by pariod of gestation, color, sex, and aga at death: United States, 1960 Iiva-birth cohort

Color, sex, and

age at daath

TOTAL

Both saxes

Under 1 year of age . . . .

Under 28 days , , . . ,

Undar 7 days . . . .

7-13days . . . . . .

14-27 days . . . . .

28 days-11 months . . .

28 days-5 months . .

6-11 months . . . .

Male

Under 1 year of age . . . .

Under 28 days . . . . .

Under 7 days . . . .

7-13days ., . . , ,

14-27 days . . . , .

?8 days-l 1 months . . .

28 days-5 months . .

6-11 months , . . .

Femala

Under 1 year of age . . . .

Under 28 days . . . . .

Under 7 days . . . .

7-13days . . . . . .

. . . . . . . .

,., . . . ,,

. . . . . . ,.

. . . . . . . .

. . . . . . ,.

. . . . . . . .

. . . . . . . .

,, . . . . . .

. . . . . . . .

. . . . . . . .

. . . . . . . .

!. .,,. . .

. . . . . . . .

. . . . . . . .

. . . . . . . .

. . . . . . . .

. . . . . . . .

. . . . . . . .

. . . . . . . .

. . . . . . .

i4-27 days . . . . . . . . . . . . .

28days-ll months . . , , . , . . . . ,

28days-5months . . . . . . . . . .

6-n months . . . . . . . . . . . .

II Period of gestation

Total Undar 20 to 28 to 32 to 36 37 to

40

20 27 31 35 39

weeks Not

weeks

weeks weeks

and

weeks weeks weeks stated

over

Number of deaths undar 1 year of age

107,038

78,330

70,031

4,091

4,208

28,708

21,641

7,067

61,651

45,442

40,767

2,265

2,410

16,208

12.360

3,849

45,387

32,888

29,264

1,826

1,798

12,499

9,281

3,218

1,078

1,076

1,074

2

2

1

1

587

586

586

1

1

491

490

488

2

1

1

19,685

19,479

19,015

324

140

206

179

27

10,867

10,754

10,526

146

82

113

95

18

8,818

8,725

8,499

178

58

93

84

9

14,198

13,387

12,568

554

265

811

675

136

8,288

7,863

7,441

287

135

435

366

69

5,900

5,524

5,127

267

130

376

309

67

11,621

10,131

9,400

424

307

1,490

1,197

293

7,106

6,213

5,810

237

166

893

733

160

4,515

3,918

3,590

187

141

597

464

133

5,339

3,747

3,245

249

253

1,592

1,219

373

3,100

2,218

1,951

133

134

882

692

190

2,238

i,528

1,294

116

119

710

527

183

9,723

5,814

4,834

438

542

3,909

2,997

912

5,659

3,426

2,847

253

326

2,233

1,736

497

4,064

2,388

1,987

185

216

1,676

1,261

415

36,905

18,254

14,051

1,792

2,411

18,651

13,764

4,887

21,094

10,603

8,166

1,041

1,396

10,491

7,813

2,678

15,811

7,651

5,885

751

1,015

8,160

5951

2,209

8,489

6,442

5,844

308

290

2,047

1,609

438

4,940

3,779

3,440

168

171

1,161

925

236

3,649

2,663

2,404

140

119

886

684

202

38
I%ble 5. Deaths under 1 year of age, by period of gestation, color, sex, and age at death: Unitad States, 1960 Iiva-birth cohort-Con.

Color, sex, and

aga at daath

WHITE

Both sexes

Under lyearofage . . . . . . . . . . . .

Under 28days, . . . . . . . . . . . .

Under 7days . . . . . . . . . . . .

7-13days . . . . . . . . . . . . . .

14-27 days . . . . . . . . . . . . .

28days-ll months . . . . . . . . . . .

28days-5 months . . . . . . . . . .

6-n months . . . . . . . . . . . .

Male

Under lyearofage . . . . . . . . . . . .

Under 28days, . . . . . . . . . . . .

Under 7days . . . . . . . . . . . .

7-13 days . . . . . . . . . . . . . .

14-27 days . . . . . . . . . . . . .

28days-ll months . , . . . . . . . . .

28days-5 months . . . . . . . . . .

6-n months . . . . . . . . . . . .

Female

Undarlyaarofaga . . . . . . . . . . . .

Under 28days . . . . . . . . . . . . .

Under 7days . . . . . . . . . . . .

7-13days . . . . . . . . . . . . . .

14-27 days . . . . . . . . . . . . .

28days-ll months . . . . . . . . . . .

28days.5 months . . . . , . , . . .

6.11 months . . . . . . . . . . . .

1

Total Under

20

weeks

79,819

60,773

55,007

2,980

2,786

19,046

14,282

4,764

46,386

35,537

32,225

1,686

1,626

10,849

8,258

2,591

33,433

25,236

22,782

1,294

1,160

8,197

6,024

2,173

677

676

675

1

1

1

371

370

370

. . .

..-

1

. . .

1

306

306

305

1

1

20 to 28 to

27 31

weeks weeks

Period of gestation

I I

32 to 36 37 to

35 39

weeks weeks weeks

Number Of deaths under I Year Of a9e

14,686

14,585

14,296

202

87

101

86

15

8,224

8,166

8,017

98

51

58

48

10

6,462

6,419

6,279

104

36

43

38

5

10,707

10,277

9,762

379

136

430

361

69

6,345

6,086

5,814

208

73

249

208

41

4,362

4,181

3,948

170

63

181

153

28

9,331

8,393

7,882

316

195

938

757

181

5,752

5,172

4,881

180

111

580

479

101

3,579

3,221

3,001

136

84

358

278

80

3$08

2,970

2,648

161

161

938

716

222

2,294

1,757

1,589

84

84

537

422

115

1,614

1,213

1,059

77

77

401

294

107

7,833

4,898

4,149

358

391

2,935

2,234

701

4,575

2,886

2,432

210

244

1,689

1,306

383

3,258

2,012

1,717

148

147

1,246

928

318

40

weeks

and

over

26,173

13,910

10,952

1,332

1,626

12,263

8,981

3,282

15,010

8,086

6,364

773

949

6,924

5,132

1,792

11,163

5,824

4,588

559

677

5,339

3,849

1,490

Not

stated

6,504

5,064

4,643

231

190

1,440

1,147

293

3,815

3,004

2,758

132

114

811

663

148

2,689

2,060

1,885

99

76

629

484

145
Table 5. Deaths under 1 year of age, by period of gestation, color, sex, and age at death: United States, 1960 live-birth cohort–Con.

Color, sex, and

age at death

N- L OT’HE~

Both sexas

Under lyearofage . . . . . . . . . . . .

Under 28days . . . . . . . . . . . . .

Under 7days . . . . . . . . . . . .

7-13days . . . . . . . . . . . . . .

14-27 days . . . . . . . . . . . . .

28days-ll months . . . . . . . . . . .

28days-5 months . . . . . . . . . .

6-n months . . . . . . . . . . . .

Male

Under lyaarofage . . . . . . . . . . . .

Under 28days . . . . . . . . . . . . .

Under 7days . . . . . . . . . . . .

7-13days . . . . . . . . . . . . . .

14-27 days . . . . . . . . . . . . .

28days-ll months . . . , . . . . . . .

28days-5 months . . . . . . . . . .

6-n months . . . . . . . . . . . .

Female

Under lyearofage . . . . . . . . . . . .

Under 28days . . . . . . . . . . . . .

Under 7 days . . . . . . . . . . . .

7-13days . . . . . . . . . . . . . .

14-27 days . . . . . . . . . . . . .

28days-ll months . . . . . . . . . . .

28days-5 months . . . . . . . . . .

6-n months . . . . . . . . . . . .

Period of gestation

Total Under 20 to 28 to 32 to 36 37 to

40

20 27 31 35 38

weeks Not

weaks and weeks weeks weeks weeks weeks stated

over

Number of.dealhs under 1 year of age

27,219

17,557

15,024

1,111

1,422

9,662

7,359

2,303

15,265

9,905

8,542

579

784

5,360

4,102

1,258

11,954

7,652

6,482

532

638

4,302

3,257

1,405

401

400

388

1

1

1

216

216

216

1B5

184

183

1

1

1

4,999

4,894

4,719

122

53

105

93

12

2,643

2,588

2,509

48

31

55

47

8

2,356

2,306

2,210

74

22

50

46

4

3,491

3,110

2,806

175

128

381

314

67

1,953

1,767

1,627

7B

62

186

158

2B

1,538

1,343

1,179

97

67

195

156

39

2,290

1,738

1,518

108

112

552

440

112

1,354

1,041

929

57

55

313

254

59

936

697

589

51

57

239

186

53

1,431

777

597

88

92

654

503

151

806

461

362

49

50

270

75

625

316

235

38

42

308

233

76

1,890

916

685

80

151

974

763

211

1,084

540

415

43

82

544

430

114

806

376

270

37

69

430

333

97

10,732

4,344

3,099

460

785

6,388

4,783

1,605

6,084

2,517

1,802

268

447

3,567

2,681

886

4,64B

1,827

1,297

192

338

2,821

2,102

719

1,985

1,378

1,201

77

100

607

462

145

1,125

775

682

36

57

350

262

88

860

603

519

41

43

257

200

57

40
Table 6. Infant mortality rates per 100,000 live births, by period of gestation, color, sex, and age at death: United States, 1960 liveColor, sex, and

age at death

I!uAL

Both sexes

Under 1 year of age . . . . .

Under 28 days , . . . . .

Under 7 days . . . . .

7-13days . . . . . . .

14-27 days , . . , . .

28 days-11 months . . . .

28 days-5 months . . .

6-11 months . . . . .

Male

Under 1 year of age . . . . .

Under 2B days . . . . . .

Undar 7 days . . . . .

7.13days . . . . . . .

14-27 days . . . . . .

28 days-11 months . . . .

28 days-5 months . . .

6.11 months . . . . .

Female

Under 1 year of age . . . . .

Under 28 days . . . . . .

Under 7 days . . . . .

7-13days . . . . . . .

14-27 days . . . . . .

28 days-11 months . . . .

28 days-5 ‘months . . .

6.11 months . . . . .

Total

2,513.9

1,839.7

1,644.8

96.1

98,8

674.2

508.3

166.0

2,828.4

2,084.8

1,870.3

103.9

110.6

743.6

567.0

176.6

2,184.0

1,582.6

1,408.2

87.9

86.5

601.5

446.6

154.8

birth cohort

Period of gestation

Under

20

weeks

65,086.6

64,975.8

64,855.1

120.8

120.8

60.4

60.4

67,316.5

67,201.8

67,201.8

114.7

114.7

62,627.6

62,500.0

62,244.9

255.1

127.6

127.6

20 to

27

weeks

81,497.9

80,645.0

78,724.0

1,341.4

579.6

852.9

741.1

111.8

82,777.3

81,916.5

80,179.8

1,112.1

624.6

860.8

723.6

137.1

79,974.6

79,131.1

76,990.7

1,614.4

526.0

843.5

761.8

81.6

28 to

31

weeks

32 to

35 36

weeks weeks

1

Rate per 100,600 live births

41,602.5

39,131.8

36,737.8

1,619.4

774.6

2,370.7

1,973.1

387.5

45,478.5

43,084.4

40,781.5

1,572.9

739.9

2,364.1

2,005.9

378.2

36,958.2

34,602.9

32,116.0

1,672.5

814.3

2,355.3

1,935.6

419.7

12,398.9

10,809.2

10,028.2

452.4

327.6

1,589.7

1,277.1

312.6

14,231.9

12,443.4

11,636.3

474.7

332.5

1,788.5

1,468.1

320.4

10,308.2

8,946.0

8,197.1

427.0

321.9

1,363.1

1,059.5

303.7

4,033.4

2,830.7

2,451.5

188.1

191.1

1,202.7

920.9

281.8

4,547.3

3,253.5

2,861.9

195.1

196.6

1,293.8

1,015.1

278.7

3,487.6

2,381.7

2,015.6

180.7

185.4

1,106.0

820.9

285.1

I

37 to

40

39 weeks

and weeks

over

1,51 8.G

9082

755.2

68.4

84.7

610.7

468.2

142.5

1,707.0

1,033.5

858.8

76.3

98.3

673.6

523.7

149.9

1,316.9

773.8

643.9

59.9

70.0

543.1

408.6

134.5

1,195.1

591.1

455.0

58.0

78.1

604.0

445.7

158.3

1,341.8

674.5

519.4

66.2

88.8

667.3

497.0

170.4

1,043.1

504.7

388.2

49.5

67.0

538.3

392.6

145.7

Not

stated

3,483.1

2,643.2

2,397.8

126.4

119.0

839.9

660.2

179.7

3,927.1

3,004.1

2,734.6

133.6

135.9

922.9

735.3

187.6

3,008.5

2,258.2

2,038.5

118.7

100.9

751.3

580.0

171.3

41

.
Table 6. Infant mortality rates per 100,000 live births, by period of gestation, color, sex, and age at death: United States, 1960 liveColor, sex, and

age at death

WHITE

-Both sexes

Under 1 year of age . . . . .

Under 28 days . . . . . .

Under 7 days . . , . .

7-13days ,. . . . . .

14-27 days . . . . . .

28 days-11 months . . . .

28 days-5 months . . .

6-11 months . . . . .

Male

Undar 1 yaar of age . , . , .

Under 28 days , . . . . .

Under 7 days . . . . .

7-13deys . . . . . . .

14-27 days . . . . . .

28 days-11 months . . . .

28 days-5 months . . .

6-11 months . . . . .

Femala

Under 1 year of age . . . . .

Under 28 days . . . . . .

Under 7 days . . . . .

7-13days . . . . . . .

14-27 days . . . . . .

28 days-11 months . . . .

28 days-5 months . . .

6-11 months . . . . .

birth cohort–Con.

Period of gestation

1.

Total Under 20 to 28 to 32 to 37 to

40

20 27 31 35

36

39

weeks Not

weeks and

weaks weeks weeks weeks waeks stated

over

Rate per 100,000 live births

2,2i6.7

1,687,8

1,527.7

82.8

77.4

528.9

396.6

132.3

2,509.8

1,922.8

1,743.6

91.2

88,0

587.0

446.8

140.2

1,907.7

1,440.0

1,289.9

73.8

66.2

467.7

343.7

124.0

64,108.8

64,015.2

63,920.5

94.7

94.7

94.7

>

65,087.7

64,912.3

64,912.3

175.4

175.4

62,963.0

62,963.0

62,757,2

205.8

84,247.4

83,668.0

82,010.1

1,158.8

499.1

579.4

493.3

86.0

85,117.0

84,516.7

82,974.5

1,014.3

527.8

600.3

496.8

103.5

83,166.0

82,612.6

80,810.8

1,338.5

463.3

553.4

489.1

64.4

44,423.7

42,639.6

40,502.9

1,572.5

564.3

1,784.1

1,497.8

286.3

48,155.7

46,265.9

44,125.7

1,586.2

554.0

1,889.8

1,578.6

311.2

38,923.1

38,266.5

36,134.0

1,555.9

576.6

1,656.6

1,400.3

256.3

13,079.3

11,764.5

11,048.2

442.9

273.3

1,314.8

1,061.1

253.7

14,887.7

13,386.5

12,633.3

465.9

287.3

1,501,2

1,238.8

261.4

10,942.9

9,848.3

9,175.7

415.8

256.8

1,094.6

850.0

244.6

3,927.3

2,984.7

2,661.1

161.8

161.8

942.6

719.5

223.1

4,417.7

3,383.5

3,060.0

161.8

161.8

1,034.1

812.7

221.5

3,392.2

2,549.4

2,225.7

161.8

161.8

842.8

617.9

224.9

1,426.3

891.8

755.5

65.2

71.2

534.4

406.8

127.6

1,601.4

1,010.2

851.3

73.5

B5.4

591.2

457.1

134.1

1,236.4

763.5

651.6

56.2

55.8

472.9

352.2

120.7

999.0

531.0

418.0

50.8

62.1

468.1

342.8

125.3

1,123.6

605.3

476.4

57.9

71.0

518.3

384.2

134.1

869.4

453.6

357.3

43.5

52.7

415.8

299.8

116.1

2,979.5

2,319.B

2,126,9

105.8

87.0

659.7

525.4

134.2

3,387.1

2,667.0

2,448.6

117.2

101.2

720.0

588.6

131.4

2,545.0

1,949.6

1,784.0

93.7

71.9

595.3

458,1

137.2

42
Table 6. Infant mortality rates par 100,000 live births, by period of gestation, color, sex, and age at death: United States, 1960 liveColor, sex, and

age at death

ALL OTHER

Both sexes

Under 1 year of aga . . . . .

Under 28 days , . . . . .

Under 7 days . . . . .

7-13days . . . . . . .

14-27 days . . . . . .

28 days-11 months , . . .

28 days-5 months . . .

6-11 months . . . . .

Male

Under 1 year of age . . . . .

Under 28 days . . . . . .

Under 7 days . . . . .

7-13days . . ,. . . .

14-27 days . . . , . .

28 days-11 months . . . .

28 days-5 months . . .

6-11 months . . . . .

Female

Under 1 year of age . . . . .

Under 28 days . , . . . .

Under 7 days , . . . ,

7-13days . . . . . . .

14-27 days . . . . . .

28days.11 months , . . ,

28 days-5 months . . .

6-11 months . . . . .

birth cohort–Con.

Period of gestation

Total Under 20 to 28 to 32 to 37 to

40

20 27 31 35 36 39 weeks Not

waeks

weeks weeke and weeks weeks stated weeks

over

Rate per 100,000 live births

4,142.3

2,671.9

2,286.4

169.1

216.4

1,470.4

1,119.9

350.5

4,604.6

2,987.8

2,576.6

174,7

236.5

1,616.8

1,237.3

379.5

3,671.5

2,350.2

1,990.8

163.4

196.0

1,321.3

1,000.3

321.0

66,833.3

66,666.7

66,500.0

166.7

166.7

166.7

71,523.2

71,523.2

71,523.2

62,080.5

61,745.0

61,408.4

335.6

335.6

335.6

74,367.7

72,805.7

70,202.3

1,814.9

788.5

1,562.0

1,383.5

178.5

76,255.0

74,668.2

72,388.9

1,384.9

894.4

1,586.8

1,356.0

230.8

72,358.7

70,823.1

57,874.7

2,272.7

675.7

1,535,6

1,412.8

122.9

34,537.0

30,767.7

27,760.2

1,731.3

1,276.2

3,769.3

3,106.5

662.8

38,520.7

34,852.1

32,090.7

1,538.5

1,222.9

3,668.6

3;1 16.4

552.3

30,528.0

26,657.4

23,402.1

1,925.4

1,329.9

3,870.6

3,086.5

774.1

10,230.5

7,764.5

6,781.6

482.5

500.4

2,466.0

1,965.7

500.4

11,988.7

9,217.3

8,225.6

504.7

487.0

2,771.4

2,249.0

522.4

8,440.0

6,264.9

5,311.1

459.9

514.0

2,155.1

1,677.2

477.9

4,354.6

2,364.4

1,816.7

267.8

2B0.O

1,990.1

1,530.6

459.5

4,961.8

2,838.0

2,228.5

301.6

307.8

2,123.9

1,662.2

461.7

3,761.0

1,901.6

1,414.1

234.7

252.7

1,859.4

1,402.1

457.3

2,078.8

1,007.5

753.4

88.0

166.1

1,071.3

839.2

232.1

2,365.9

1,178.6

905.8

93.8

179.0

1,187.3

938.5

248.8

1,787.2

833.7

598.7

82,0

153.0

953.5

738,4

215.1

2,292.7

928.0

662.1

98.3

167.7

1,364.7

1,021.8

342.9

2,576.2

1,065.8

763.0

113.5

189.3

1,510.4

1,135.2

375.2

2,004.1

787.8

559.2

82.8

145.7

1,216.3

906.3

310.0

7,806.4

5,419.2

4,723.1

302.8

393.3

2,387.1

1,816.9

570.2

8,548.6

5,888.1

5,182.4

273.6

433.1

2,659.6

1,990.9

668.7

7,010.1

4,915.2

4,230,5

334.2

350.5

2,094.9

1,630,3

464.6

43
Table 7. Births and survivo~ at selected age intervals Up to 6 months, by period Of gastation, color, and sex: United States, 1960 livebirth cohort

Period of gestation

I I I

40

weeks

and

over

Color, sex,

and age

28 to 32 to

36

37 to

31 35 39

weeks

weeks waeks weeks

Total --LUnder 20 to

20 27

weeks waeks

Not

stated

I I I

TOTAL

Both sexes Number of births and survivors

Births . . . . . . . . . . 4,257,850 1,656 24,154 34,210 93,726 132,370 640,114 3,087,898 243,722

4,187,819

4,183,728

4,179,520

4,157,879

2,179,708

2,138,941

2,136,676

2,134,266

2,121,906

2,078,142

2,048,878

2,047,052

2,045,254

2,035,973

3,600,744

582

580

580

579

872

286

286

286

286

734

296

294

294

293

1,056

5,139

4,815

4,675

4,496

13,128

2,602

2,456

2,374

2,279

11,026

2,537

2,359

2,301

2,217

17,432

21,642

21,088

20,823

20,148

18,246

10,805

10,518

10,383

10,017

15,964

10,837

10,570

10,440

10,131

24,102

14,340

13,961

13,825

13,464

13,176

7,362

7,153

7,080

6,872

84,326

83,902

83,595

82,398

49,930

44,120

43,8B3

43,717

42,984

43,796

40,206

40,019

39,878

39,414

71,342

63,460

63,144

62,949

62,192

38,636

33,755

33,575

33,464

32,985

129,125

128,876

128,623

127,404

68,172

66,221

66,088

65,954

65,262

64,198

62~04

62,788

62,669

62,142

99,508

96,860

96,699

96,538

95,822

51,928

50,339

50,255

50,171

49,749

635,280

634,842

634,300

631,303

331,510

328,663

328,410

328,064

326,348

308,604

306,617

306,432

306,216

304,955

549,198

545,049

544,691

544,300

542,066

285,692

283,260

283,050

282,806

281,500

3,073,647

3,072,055

3,069,644

3,055,880

1,572,056

1,563,890

1,562,849

1,561,453

1,553,640

1,515,842

1,509,957

1,509,206

1,508,191

1,502,240

2,619,812

2,608,860

2,607,528

2,605,902

2,596,921

1,335,894

1,329,530

1,328,757

1,327,808

1,322,676

237,878

237,570

237,280

235,671

125,794

122,354

122,186

122,015

121,090

117,928

115,524

115,384

115,265

114,581

218,294

213,651

213,420

213,230

212,063

112,634

109,876

109,744

108,630

108,967

7days . . . . . . . . . . . . .

14days . . . . . . . . . . . .

28 days . . . . . . . . . . . .

6 months . . . . . . . . . . .

Male

Births . . . . . . . . . .

7days . . . . . . . . . . . . .

14days . . . . . . . . . . . .

28days . . . . . . . . . . . .

6 months . . . . . . . . . . .

Births . . . . . . . . . .

7days . . . . . . . . . . . . .

14days . . . . . . . . . . . .

28days . . . . . . . . . . . .

6 months . . . . . . . . . . .

WHITE

Both sexes

Births . . . . . . . . . .

7days . . . . . . . . . . . . .

14days . . . . . . . . . . . .

28days . . . . . . . . . . . .

6months . . . . . . . . . . .

3,545,737

3,542,757

3,539,971

3,525,689

1,848,192

1,815,967

1,814,281

1,812,655

1,804,397

381

380

380

380

570

200

200

200

200

3,136

2,934

2,847

2,761

9,662

1,645

1,547

1,496

1,448

Male

Births . . . . . . . . . .

7days . . . . . . . . . . . . .

14days . . . . . . . . . . . .

28days . . . . . . . . . . . .

6 months . . . . . . . . . . .

44
Table 7, Births and survivors at selected age intervals up to 6 months, by period of gestation, color, and sex: United States, 1960 liveColor, sex,

and aga

W+ lTE-ConC

Female

Births . . . . . . . . . .

7days . . . . . . . . . . . . .

14days, , . . . . . . . . . .

28days .,.......,..

6 months, . . . . . . . . . .

ALL OTHER

Both sexes

Births . . . . . . . . . .

7days .,, . . . . . . . . . .

14days, . . . . . . . . . . .

28daVs . . . . . . . . . . . .

6months . . . . . . . . . . .

Male

Births . . . . . . . . . .

7days . . . . . . . . . . . . .

14days, . . . . . . . . . . .

28days . . . . . . . . . . . .

6months . . . . . . . . . . .

Femala

Births, .,.......

7days . . . . . . . . . . . . .

14days, . . . . . . . . . . .

28days . . . . . . . . . . . .

6months . . . . . . . . . . .

birth cohort–Con.

Period of gestation

Total Under 20 to 28 to 32 to 37 to

40

20 27 31 35 36 39

weeks Not

weeks

wee ks and weeks wee ks wee ks stated

wee ks

over

Number of births and survivors

1,752,552

I,729,77C

1,728,47(?

1,727,316

1,721,292

657,106

642,082

640,971

639,549

632,190

331,516

322,974

322,395

321,611

317,509

325,590

325,590

31 B,576

317,938

314,681

486

181

1BO

1BO

180

600

201

200

200

199

302

86

86

86

86

298

i15

114

114

113

7,770

1,491

1,387

1,351

1,313

6,722

2,003

1,881

1,828

1,735

3,466

957

909

878

831

3,256

1,C46

972

950

904

10,926

6,978

6,80B

6,745

6,592

10,108

7,302

7,127

6,998

6,684

5,070

3,443

3,365

3,303

3,145

5,038

3,859

3,762

3,695

3,539

32,706

28,705

28,569

28,485

29,207

22,384

20,866

20,758

20,646

20,206

11,294

10,365

10,308

10,253

9,999

11,090

10,501

10,450

10,393

10,207

47,580

46,521

46,444

46,367

46,073

32,862

32,265

32,177

32,085

31,582

16,244

15,882

15,833

15,783

15,513

16,618

16,383

16,344

16,302

16,069

263,506

261,789

261,641

261,494

260,566

90,916

90,231

90,151

90,000

89,237

45,818

45,403

45,360

45,278

44,848

45,098

44,828

44,791

44,722

44,389

1,283,918

I,279,33C

1,278,771

1,278,094

1,274,245

468,086

464,987

464,527

463,742

458,959

236,162

234,360

234,092

233,645

230,964

231,924

230,627

230,435

230,097

227,995

105,660

103,775

103,676

103,600

103,116

25,428

24,227

24,150

24,050

23,588

13,160

12,478

12,442

12,385

12,123

12,268

11,749

11,708

11,665

11,465

45
Table8. Probabilities ofdying perl OO,OOOsuwivors, by period of gestation, color, sex, andage at death: United States, 19601 iveColor, sex, and

age at death

TOTAL

Both sexes

Undarl yearof age . . . . .

Under 28 days . . . . . .

Under 7 days . . . . .

7-13 days . . . . . . .

14-27 days . . . . . .

28 days-11 months . . . .

28 days-5 months . . ,

6-11 months . . . . .

Male

Under 1 year of age . , . . .

Under 28 days . . . . . .

Under 7 days . . . . .

7-13days . . . . . . .

14-27 days . . . . . .

28 days-11 months . . . .

28 days-5 months . . .

6-11 months . . . . .

Female

Under 1 yaar of age . . . . .

Under 28 days . . . . . .

Under 7 days . . , . .

7-13days . . . . . . .

14-27 days . . . . . .

28 days-11 months . . . .

28 days-5 months . . .

6-11 months . . . . .

birth cohort

Period of gestation

Total Under 20 to 28 to 32 to 37 to

40

20 27 31 35

36 39 weaks Not

weeks and

wee ks wee ks weeks weeks weeks stated

over

Probability of dying per 100,000 survivors

2,513.9

1,839.7

1,644.8

97.7

100.6

686.9

517.8

170.0

2,828.4

2,084.8

1,870.3

105.9

112.8

759.5

579.1

181.4

2,184.0

1,582.6

1,408.2

89.1

87.8

611.1

453.8

158.1

65,096.6

64,975.8

64,855.1

~343.6

1.

‘ 344.8

‘ 172.4

‘ 172.7

67,316,5

67,201.8

67,201.8

1.

1.

‘ 349.7

1-

‘ 349.7

62,627.6

62,500.0

62,244.9

1675.7

1.

1340.1

1340.1

1.

81,497.9

80,645.0

78.724.0

6,304.7

2,907.6

4,406.4

3,828.9

600.5

82,777.3

81,916.5

80,179.8

5,611.1

3,338.8

4,759.9

4,001.7

1789.8

79,974.6

79,131.1

76,990.7

7,016.2

2,458.7

4,041.7

3,650.6

1406.0

41,502.5

39,131.8

36,737.8

2,559.8

1,256.6

3,894.7

3,241.6

675.0

45,478.5

43,084.4

40,781.5

2,656.2

1,283.5

4,189.5

3,525.0

688.8

36,958.2

34,602.9

32,116.0

2,463.8

1,229.9

3,601.5

2,959.8

661.3

12,398.9

10,808.2

10,028.2

502.8

365.9

1,782.4

1,431.9

355.6

14,231.9

12,443.4

11,636.3

537.2

378.3

2,042.7

1,676.7

372.2

10,309.2

8/946.0

8,197.1

465.1

352.3

1,497.1

1,163.5

337.4

4,033.4

2,830.7

2,451.5

192.8

196.3

1,237.7

947.7

292.8

4,547.3

3,253.5

2,861.9

200.8

202.8

1,337.3

1,049.2

B1.1

3,487.6

2,381.7

2,015.6

184.4

189.5

1,132.9

840.9

294.5

1,518.9

908.3

755.2

68.9

85.4

616.3

472.5

144.5

1,707.9

1,033.5

858.8

77.0

99.3

680.6

529.1

152.3

1,316.9

773.8

643.9

60.3

70.5

547.3

411.8

136.1

1,195.1

591.1

455.0

58.3

78.5

607.6

448.4

159.9

1,341.8

674,5

519.4

66.6

89.3

671.9

500.4

172.4

1,043.1

504.7

388,2

49.7

67.3

541.0

394.6

147,0

3,483.1

2,643.2

2,397.8

129.5

122.1

862,7

678.1

185.9

3,927.1

3,004.1

2,734.6

137.3

140.0

951.5

758.1

194.9

3,008.5

2,258.2

2,038.5

121.2

103.1

768.7

593.4

176,3

‘See footnote at end of table.

46
Table 8. Probabilities of dying per 100,000 suwivors, by period of gestation, color, sex, and age at death: United States, 1960 liveColor, sex, and

age at daath

WHITE

Both sexes

Under 1 year of age . . . . .

Under 28 days . , , , . .

Under 7 days . , . . .

7-13days . . . . . . .

14-27 days . . . . . .

28 days-11 months . . . .

28 days-5 months . . .

6-11 months . . . . .

Male

Under 1 year of age . . . . .

Under 28 days . . . . . .

Under 7 days . . . . .

7-13 days . . . . . . .

14-27 days . . . . . .

26 days-11 months . . . .

28 days-5 months . . .

6-11 months . . . . .

Female

Under 1 year of age . . . . .

Under 28 days . . , . . .

Under 7 days , . . . .

7-13days . . ,. . . .

14-27 days . . . . . .

28 days-11 months . . . .

28 days.5 months . . .

6-11 months . . . . .

birth cohort–Con.

Total

2,216.7

1,687.8

1,527.7

84.0

78.6

538.0

403.4

135.1

2,509,8

1,922.8

1,743.6

92.8

89.6

598.5

455.6

143.6

1,907.7

1,440.0

1,299.9

74.8

67.1

474.6

348.7

126.2

Undar 20 to

20 27

weeks weeks

64,109.8

64,015.2

63,920.5

‘ 262.5

1-

‘ 263.2

1-

1263.2

65,087.7

64,912.3

64,912.3

1.

1-

* 500.0

1.

‘500.0

62,963.0

62,963.0

62,767.2

‘552.5

1-

1.

1-

1-

Period of gestetion

Probability of dying per 100,000 survivors

84,247.4

83,668.0

82,010.1

6,441.3

2,965.2

3,547.6

3,020.7

543.3

85,117.0

84,516.7

82,974.5

5,957.4

3,296.7

3,877.0

3,208.6

] 690.6

83,166.0

82,612.6

80,810.8

6,975.2

2,595.5

3,182.8

2,812.7

‘ 380.8

44,423.7

42,639.6

40,502.9

2,643.0

974.1

3,110.3

2,611.2

512.5

48,155.7

46,265.9

44,125.7

2,838.9

1,020.6

3,516.9

2,937.9

596.6

39,923.1

38,266.5

36,134.0

2,436.2.

925.4

2,683.5

2,268.3

424.8

13,079.3

11,764.5

11,048.2

498.0

308.8

1,490.1

1,202.6

291.0

14,887.7

13,386.5

12,633.3

533.3

330.6

1,733.2

1,431.4

306.2

10,942.9

9,848.3

9,175.7

457.8

284.1

1,214.2

942.9

273.9

3,927.3

2,984.7

2,661.1

166.2

166.5

971.6

741.7

231.7

4,417.7

3,383.5

3,060.0

166.9

167.1

1,070.3

841.1

231.2

3,392.2

2,549.4

2,225.7

165.6

165.8

864.8

634.1

232.2

37 to

39

weeks

1,426.3

891.8

755.5

65.7

71.8

539.2

410.4

129.3

1,601.4

1,010.2

851.3

74.1

86.2

597.2

461.8

136.1

1,236.4

763.5

651.6

56.5

56.2

476.5

354.9

122.0

I

40

weeks Not

and stated

over

999.C

531.0

418.C

51.1

62.4

470.6

344.6

126.4

1,123.6

605.3

476.4

58.1

71.4

521.6

386.5

135.5

869.4

453.6

357.3

43.7

52.9

417.7

301.2

116.9

2,979.5

2,319.8

2,126.9

108.1

89.0

675.3

537.9

138.2

3,387.1

2,667.0

2,448.6

120.1

103.9

738.8

604.8

135.8

2,545.0

1,949.6

1,764.0

95.4

73.3

607.1

467.2

140.6

‘ See footnote at end of table.

47
Table 8. Probabilities of dying per 100,000 survivors, by period of gestation, color, sex, and age at death: United States, 1960 liveColor, sex, and

age at death

ALLOTHER

Both sexes

Under 1 year of age . . . . .

Under 28 days . . . . . .

Undar 7 days . . . . .

7-13days . . . . . . .

14-27 days . . . . . .

28 days-11 months . . . .

28 days-5 months . . .

6-11 months . . . . .

Mala

Under 1 year of age . . . . .

Under 28 days . . . . . .

Under 7 days . . . . .

7-13days . . . . . . .

14-27 days . . . . . .

28 days-11 months . . . .

28 days-5 months . , ,

6-11 months . . . . .

Female

Under 1 year of age . . . . .

Under 28 days . . . . . .

Under 7 days . . . . .

7-13days . . . . . . .

14-27 days . . . . . .

28 days-11 months . . . .

28 days-5 months . . .

6-11 months . . . . .

birth cohort–Con.

II Period of gestation

Total Under 20 to 28 to 32 to 37 to

40

20 27 31 35

36

39

weeks Not

wee ks weeks weeks

weeks

and

weeks wee ks stated

over

4,142.3

2,671.9

2,286.4

173.0

221.9

1,510.8

1,150.7

364.3

4,604.6

2,987.8

2,576.6

179.3

243.2

1,666.6

1,275.5

396.2

3,671.5

2,350.2

1,990.8’

166.7

200.3

1,353.1

1,024.4

332.1

66,833.3

66,666.7

66,500.0

1497.5

1.

‘ 500.0

1500.0

1.

71,523.2

71,523.2

71,523.2

1.

1.

1.

1-

1.

62,080.5

61,745.0

61,408.4

] 869.6

1-

1877.2

1877.2

1.

Probability of dying per 100,000 survivors

74,367.7

72,805.7

70,202.3

6,090.9

2,817.7

5,744.0

5,087.5

‘691.6

76,255.0

74,668.2

72,388.9

5,015.7

3,410.3

6,264.2

5,353.1

1962.7

72,358.7

70,823.1

67,874.7

7,074.6

2,263.4

5,263.2

4,842.1

~442.5

34,537.0

30,767.7

27,760.2

2,396.6

1,810.0

5,444.4

4,487.0

1,002.4

38,520.7

34,852.1

32,080.7

2,265.5

1,642.5

5,631.2

4,783.5

880.3

30,528,0

26,657.4

23,402.1

2,513.6

1,781.0

5,277.4

4,221.9

1,102.0

10,230.5

7,764.5

6,781.6

517.6

539.6

2,673.6

2,131.2

554.3

11,988.7

9,217.3

8,225.6

549.9

533.6

3,052.8

2,477.3

590.1

8,440.0

6,264.9

5,311.1

485.7

545.5

2,299.6

1,768.7

519.3

4,354.6

2,364.4

1,816.7

272.7

285.9

2,038.3

1,567.7

478.1

4,961.8

2,838.0

2,228.5

308.5

315.8

2,185.9

1,710.7

483.5

3,761.0

1,901.6

1,414.1

238.1

257.0

1,895.5

1,429.3

473.0

2,078.8

1,007.5

753.4

88.7

167.5

1,082.2

847.8

236.4

2,365.9

1,178.6

905.8

94.7

1BO.8

1,201.5

949.7

254.2

1,787.2

833.7

598.7

82.5

154.0

961.5

744.6

218.5

2,292.7

928.0

662.1

98.9

169.0

1,377.5

1,031.4

349.7

2,576.2

1,065.8

763.0

114.4

191.0

1,526.7

1,147.5

383.6

2,004.1

787.8

559.2

83.3

146.7

1,226.0

913.5

315.4

7,806.4

5,419.2

4,723.1

317.8

414.1

2,523.9

1,921.0

614.7

8,548.6

5,889.1

5,182.4

288.5

458.1

2,826.0

2,115.5

725.9

7,010.1

4,915.2

4,230.5

349.0

367.3

2,203.2

1,714.5

497.2

] The rate is based on fewar than 20 deaths, but more than 100 survivors.

48
Table 9. Deaths under 1 year of age, by birth weight, plurality of birth, color, age of mother, and age at death: United States, 1960

live-birth cohort

II

Birth weight

Plurality of birth,

color, and

age of mothar

?,000

grams

or

less

1,001

to

1,500

grams

1,501 2,00? 2,501

to to to

2,000 2,500 3,000

grams grams grams

3,001

to

3,500

grams

3,501 4,001

to to

4,000 4,500

grams grams

4,507

grams

or

more

876

Total

ALL BIRTHS

Total

Mothars of all agas . . . .

Under 15years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

40-44 years . . . . . . . . . . .

45yearsand over . . . . . . . .

White

Mothers. of all ages . . . .

Uncler15years ., ,. ,. . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25.29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

40-44 years . . . . . . . .. . . .

45yearsandover . . . . . . . ,

All othar

Mothers of all ages . . . .

Under 15years . . . . . . . . .

15-19 years . . . . . . . . . . .

20.24 years . .,, ,, . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35.39 years . . . . . . . . . . .

4044years . . . . . . . . . . .

45yearsandover . . . . . . . .

Number of deaths under 1 year of age

107,03E 22,359 15,225 12,789 12,709 14,950 16,40C 9,082 2,647

39fi

19,24C

84,472

24,442

16,275

9,194

2,803

213

79,819

120

12,861

26,162

18,818

12,466

7,033

2,195

164

27,219

278

6,379

8,310

5,625

3,809

2,166

608

49

89

3,943

6,916

5,325

3,7(X3

1,911

443

23

16,256

23

2,502

5,050

4,014

2,792

1,500

356

19

6,103

66

1,441

1,866

1,311

917

411

87

4

61

3,212

5,018

3,322

2,150

1,148

281

23

11,536

15

2,232

3,843

2,597

1,688

904

238

19

3,689

46

980

1,175

726

462

244

53

4

52

2,5? 2

4,243

2,762

1,827

1,055

316

22

10,001

20

1,842

3,340

2,208

1,463

644

263

21

2,788

32

670

903

554

365

211

53

1

55

2,272

4,077

2,817

1,874

1,167

405

42

9,486

16

1,482

3,112

2,189

1,447

806

301

33

3,223

39

790

965

628

427

261

104

9

65

2,708

4,875

3,436

2,209

1,217

398

42

10,756

21

1,659

3,594

2,582

1,659

906

304

31

4,194

44

1,049

1,281

854

550

311

94

11

4~

2,83C

5,484

3,82C

2,335

1,372

47~

31

12,154

17

1,879

4,151

2,911

1,764

1,016

372

24

4,246

32

951

1,333

909

551

356

107

7

2C

1,376

2,928

2,110

1,471

862

296

20

6,966

6

880

2,322

1,659

1,112

635

229

13

2,117

14

386

606

451

359

227

67

7

7

317

74a

637

486

317

126

9

2,015

2

229

611

493

356

224

96

4

632

5

88

137

144

130

93

30

5

70

183

214

214

145

49

1

649

46

139

165

165

98

36

227

24

44

49

49

47

13

1

49
Table 9. Deaths under 1 year of age, by birth weight, plurality of birth, color, age of mother, and age at death: United States, 1960

Plurality of birth,

color, and

age of mother

ALL BI RTHS–COn.

Total

Motharsof all ages . . . .

Under 15years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

4044years . . . . . . . . . . .

45yearsandover , , . . . . . .

White

Mothers of all ages . . . .

Under 15years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years........,..

40-44 year? . . . . . . . . . . .

45years~nd over. . . . . . . .

All other

Mothers of all ages . . . .

Under 15 years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

40-44 years . . . . . . . . . . .

45years and over . . . . . . . .

live-birth cohort–Con.

Birth weight

Total

1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to to to to to to grams

or 1,500 2,000 2,500 3,000 3,500 4,000 4,500 or

less grams grams grams grams grams grams grams more

Number of deaths under 28 days

78,330

279

13,324

24,644

18,108

12,601

7,093

2,118

162

60,773

81

9,338

19,400

14,457

9,983

5,661

1,719

134

17,557

198

3,986

5,244

3,652

2,618

1,432

399

28

22,202

88

3,906

6,885

5,289

3,679

1,891

441

23

16,166

23

2,482

5,035

3,990

2,776

1,486

355

19

6,036

65

1,424

1,850

1,299

903

405

86

4

14,474

58

3,064

4,762

3,154

2,065

1,071

278

22

11,124

15

2,160

3,704

2,491

1,648

859

229

18

3,350

43

904

1,058

663

417

212

49

4

11,179

47

2,148

3,753

2,412

1,602

921

276

20

9,064

17

1,664

3,044

1,998

1,325

761

235

20

2,115

30

484

709

414

277

160

41

9,010

31

1,403

2,855

2,073

1,435

887

283

33

7,341

11

1,052

2,368

1,724

1,181

741

237

27

1,669

20

351

487

349

254

146

56

6

7,817

27

1,102

2,407

1,886

1,355

750

256

24

6,253

9

760

1,984

1,581

1,104

592

204

19

1,564

18

342

423

315

251

158

52

5

7,581

16

988

2,358

1,862

1,281

771

285

20

6,016

3

691

1,909

1,505

1,03B

622

231

17

1,565

13

287

449

357

243

149

54

3

4,149

9

544

1,159

974

779

494

176

14

3,328

3

406

976

815

601

374

142

11

821

6

138

183

159

178

120

34

3

1,341

3

133

351

313

259

202

75

5

1,036

95

292

243

194

150

59

3

305

3

38

59

70

65

52

16

2

577

36

114

136

146

106

38

1

445

28

88

110

116

76

27

132

8

26

26

30

30

11

1

50
Table 9. Deaths under 1 year of age, by birth weight, plurality of birth, color, age of mother, and age at death: United States, 1960

live-birth cohort—Con.

Total 1,000

grams

or

less

Birth weight

m

Plurality of birth,

color, and

age of mother

1,001

to

1,500

grams

1,501

to

2,000

grams

2,001

to

2,500

grams

4,001 4,501

to grems

4,500 or

grams more

1 I 1 1

ALL BI RTHS–Con.

Total Number of deaths at 28 days-11 months

Mothers of all ages . . . . 28,708

119

5,916

9,828

6,334

3,674

2,101

685

51

19,046

39

3,523

6,762

4,361

2,483

1,372

476

30

9,662

80

2,393

3,066

1,973

1,191

729

209

21

157 751

—

3

148

256

168

85

77

13

1

412

72

139

108

40

45

9

1

339

3

76

117

62

45

32

4

1,610 3,699 7,133 8,819 4,934 1,306 299

Under 15 years . . . . . . . . .

15.19 years . . .. m......

20.24 yaars m. ...,,,.,.

25-29 years . . . . . . . . . . .

30.34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

40-44 years . . . . . . . . . . .

45yearsand over . . . . . . . .

1

37

31

36

30

20

2

90

20

15

24

16

14

1

67

1

17

16

12

14

6

1

5

364

490

350

225

134

40

2

937

3

178

296

210

138

83

28

1

673

2

186

194

140

87

51

12

1

24

869

1,222

744

439

280

112

9

2,145

5

430

744

465

266

165

64

6

1,554

19

439

478

279

173

115

48

3

38

1,606

2,468

1,540

854

467

142

18

4,503

12

899

1,610

1,001

555

314

100

12

2,630

26

707

858

539

289

153

42

6

33

1,642

3,126

1,958

1,054

601

194

11

6,138

14

1,188

2,242

1,406

746

394

141

7

2,6BI

19

654

884

552

308

207

53

4

11

832

1,769

1,136

692

368

120

6

3,638

3

584

1,346

844

511

261

87

2

1,296

8

248

423

292

181

107

33

4

4

184

397

324

227

115

51

4

979

2

134

319

250

162

74

37

1

327

2

50

78

74

65

41

14

3

34

69

78

68

39

11

204

18

51

55

49

22

9

95

16

18

23

19

17

2

Whita

Mothers of all ages . . . .

Under 15 years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30.34 years, ,,, ,, . . . . .

35-39 years . . . . . . . . . . .

40-44 years, . . . . . . . . . .

45yearsand over,. , . . . . .

All other

Mothers of all ages . . . .

Under 15years . , . . , . . . .

15-29 years .,, . . . . . . . .

20.24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

40-44 years . . . . . . . . . . .

45yearsandover , . . . . . . .

51
Table 9. Deaths under 1 year of age, by birth weight, plurality of birth, color, age of mother, and age at death: United States, 1960

Plurality of birth,

color, and

age of mother

SINGLE BIRTHS

Total

Mothers of all ages . . . .

Under 15years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

40-44 years . . . . . . . . . . .

45years and over . . . . . . . .

White

Mothers of all ages . . . .

Under 15 years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

4044 years . . . . . . . . . . .

45yearsandover . . . . . . . .

All other

Mothers of all ages . . . .

Under 15 years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

40-44 years . . . . . . . . . . .

45years and over . . . . . . . .

live-birth cohort-Con.

Birth weight

Total 1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to to to to to to grams

or 1,500 2,000 2,500 3,000 3,500 4,000 4,500 or

less grams grams grams grams grams grams grams more

Number of deaths under 1 year of age

96,986

381

17,724

31,211

22,071

14,532

8,256

2,607

204

72,382

113

11,782

23,725

17,042

11,161

6,355

2,049

155

24,604

268

5,942

7,486

5,029

3,371

1,901

558

49

18,277

77

3,261

5,575

4,418

3,019

1,543

363

21

13,221

17

2,032

4,026

3,325

2,285

1,222

297

17

5,056

60

1,229

1,549

1,093

734

321

66

4

12,694

59

2,787

4,181

2,707

1,730

962

247

21

9,591

14

1,905

3,212

2,121

1,361

758

203

17

3,103

45

882

969

586

369

204

44

4

11,087

50

2,303

3,701

2,352

1,516

879

277

19

8,717

20

1,684

2,936

1,904

1,212

714

229

18

2,380

30

619

765

448

304

165

48

1

11,703

54

2,141

3,756

2,574

1,702

1,051

385

40

8,802

16

1,398

2,885

2,020

1,326

836

280

31

2,901

38

743

871

554

376

215

95

9

14,447

65

2,656

4,730

3,305

2,098

1,165

386

42

10,428

21

1,629

3,491

2,497

1,585

877

287

31

4,019

44

1,027

1,239

808

513

288

89

11

16,207

49

2,815

5,427

3,765

2,301

1,341

478

31

12,025

17

1,870

4,115

2,867

1,763

997

372

24

4,182

32

945

1,312

898

538

344

106

7

9,046

20

1,374

2,914

2,101

1,467

864

296

20

6,941

6

989

2,314

1,652

1,108

630

229

13

2,105

14

385

600

449

224

67

7

2,641

7

317

744

637

485

316

126

9

2,010

2

229

607

493

356

223

93

4

631

5

88

137

144

129

93

30

5

874

70

183

212

214

145

49

1

647

46

139

163

165

98

36

227

24

44

49

49

47

13

1

52
Table 9. Deaths under 1 year of age, by birth weight, plurality of birth, color, age of mother, and age at death: United States, 1960

Plurality of birth,

color, and

age of mother

SINGLE BIRTHS-Con.

Total

Mothers of all ages . . . .

Under 15years .,. . . . ,. .

15-19 years, . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

40-44 years, . . . . . . . . . .

45yearsandovar . . . . . . . .

White

Mothers of all ages . . . .

Under 15years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

40-44 years . . . . . . . . . . .

45years and over . . . . . . . .

All other

Mothers of all ages . . . .

Under 15years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

40-44 years . . . . . . . . . . .

45 years and over. . . . . . . .

live-birth cohort–Con.

Birth weight

Total

1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to to to to to to grams

or 1,500 2,000 2,500 3,000 3,500 4,000 4,500 or

less grams grams grams grams grams grams grams more

Number of deaths under 28 days

69,613

263

11,982

21,811

16,068

11,092

6,299

1,944

154

54,108

74

8,348

17,211

12,887

8,821

5,055

1,587

126

15,504

189

3,634

4,600

3,181

2,271

1,244

357

28

18,145

77

3,227

5,549

4,388

2,996

1,526

361

21

13,148

17

2,014

4,013

3,307

2,273

1.211

296

17

4,997

60

1,213

1,536

1,081

723

315

65

4

12,097

56

2,664

3,978

2,571

1,669

901

238

20

9,270

14

1,848

3,104

2,033

1,333

724

198

16

2,827

42

816

874

538

336

177

40

4

9,806

45

1,980

3,305

2,083

‘1,357

778

241

17

7,965

17

1,526

2,691

1,745

1,119

646

204

17

1,841

28

454

614

338

238

132

37

8,424

30

1,335

2,670

1,939

1,325

815

278

32

6,887

11

889

2,218

1,620

1,087

688

228

26

1,537

19

336

452

319

228

127

50

6

7,596

27

1,081

2,353

1,641

1,292

725

253

24

6,087

9

746

1,941

1,543

1,060

577

202

19

1,499

18

335

412

298

232

148

51

5

7,497

16

983

2,338

1,830

1,272

754

284

20

5,950

3

687

1,893

1,478

1,031

610

231

17

1,547

13

296

445

352

241

144

53

3

4,134

9

543

1,155

969

776

492

176

14

3,315

3

405

973

810

598

373

142

11

819

6

138

182

159

178

119

34

3

1,339

3

133

349

313

259

202

75

5

1,034

95

290

243

194

150

59

3

305

3

38

59

70

65

52

16

2

575

36

114

134

146

106

38

1

443

28

88

108

116

76

27

132

8

26

26

30

30

11

1

63
Table 9. Deaths under 1 year of age, by birth waight, plurality of birth, color, age of mother, and age at death: United States, 1960

Plurality of birth,

color, and

age of mother

SINGLE BI RTHS–Con.

Total

Mothers of all ages . . . .

Under 15years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . .. . . . . . . .

4044 years . . . . . . . . . . .

45yearsandover . . . . . . . .

Mothers of all agas . . . .

Under 15years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

40-’?4years . . . . . . . . . . .

45 years and over . . . . . . . .

All other

Mothers of all ages . . . .

Under 15 years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

4044years . . . . . . . . . . .

45yearsand over . . . . . . . .

live-birth cohort–Con.

II

Total

27,373

118

5,742

9,400

6,003

3,440

1,957

663

50

18,273

39

3,434

6,514

4,155

2,340

1,300

462

29

9,100

79

2,308

2,886

1,848

1,100

657

201

21

1,000 1,001 1,501

grams to to

or 1,500 2,000

less grams grams

, ,

132

34

26

30

23

17

2

73

18

13

18

12

11

1

59

16

13

12

11

6

1

597

3

123

203

136

61

61

9

1

321

57

108

88

28

34

5

1

276

3

66

95

48

33

27

4

Birth weight

2,001

to

2,500

grams

2,501 3,001 3,501

to to to

3,000 3,500 4,000

grams grams grams

Number of deathsat28days-11 months

1.291

5

323

396

269

159

101

36

2

752

3

158

245

159

93

68

25

1

539

2

165

151

110

66

33

11

1

4,001 4,501

to grams

4,500 or

grams more

3.279

24

806

1,086

635

377

236

107

8

1,915

5

399

667

400

229

148

62

5

1,364

19

407

419

235

148

88

45

3

6.851

38

1,575

2,377

1,464

806

440

133

18

4,331

12

883

1,550

954

525

300

95

12

2,520

26

692

827

510

281

140

38

6

8,710

33

1,832

3,089

1,935

1,029

587

194

11

6,075

14

1,183

2,222

1,389

732

397

141

7

2,635

19

649

667

546

297

200

53

4

4,912

11

831

1,759

1,132

691

362

120

6

3,626

3

584

1,341

842

510

257

87

2

1,286

8

247

418

290

181

105

33

4

1,302

4

184

395

324

226

114

51

4

976

2

134

317

250

162

73

37

1

326

2

50

78

74

64

41

14

3

299

34

69

78

68

39

11

204

18

51

55

49

22

9

95

16

18

23

19

17

2

54
Table 9. Deaths under 1 year of age, by birth weight, plurality of birth, color, age of mother, and age at death: United States, 1960

Plurality of birth,

color, and

age of mother

PLURAL BIRTHS

Total

Mothers of all ages . . . .

Under 15years , . . . . . . . .

15-19 years . . . . . . . . . . .

20.24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

4044years . . . . . . . . . . .

45yearsandover . . . . . . . .

White

Mothers of all ages . . . .

Under 15years . . . . . . . . .

15-19 years ., m........

20.24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

4044years . . . . . . . . . . .

45yearsand over . . . . ~ . . .

All other

Mothers of all ages . . . .

Under 15years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30.34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

4044years . . . . . . . . . . .

45yearsandovar . . , . . . . ,

live-birth cohort–Con.

Total

10,052

17

1,516

3,261

2,372

1,743

938

196

9

7,437

7

1,079

2,437

1,776

1,305

678

146

9

2,615

10

437

824

596

438

260

50

Birth waight

1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001

grams to to to to to to to

or 1,500 2,000 2,500 3,000 3,500 4,000 4,500

less grams grams grams grams grams grams grams

Number of deaths under 1 year of age

4,082

12

682

1,341

907

690

368

80

2

3,035

6

470

1,024

689

507

278

59

2

1,047

6

212

317

218

183

90

21

2,531

2

425

837

615

420

186

44

2

1,945

1

327

631

476

327

146

35

2

586

1

98

206

139

93

40

9

1,692

2

209

542

410

311

176

39

3

1,284

158

404

304

251

130

34

3

408

2

51

138

106

60

46

5

1,006

1

131

321

243

172

116

20

2

684

84

227

169

121

70

11

2

322

1

47

. 94

74

51

46

9

503

52

145

131

111

52

12

328

30

103

85

74

29

7

175

22

42

46

37

23

5

193

15

57

55

34

31

1

129

9

36

44

21

19

64

6

21

11

13

12

1

37

2

14

9

4

8

25

1

8

7

4

5

12

1

6

2

3

6

4

1

1

5

4

1

1

1

1

4,501

grams

or

more

55
Tabla 9. Deaths under 1 yaar of age, by birth weight, plurality of birth, color, age of mother, and age at daath: United States, 1960

Plurality of birth,

color, and

age of mother

PLURAL BIRTHS–Con.

Total

Mothers of all ages . . . .

Under 15years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

4044yaars . . . . . . . . . . .

45yearsand over . . . . . . . .

White

Mothers of all ages . . . .

Under 15years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

4044yaars . . . . . . . . . . .

45yearsand over . . . . . . . .

All other

Mothers of all ages . . . .

Under 15 years . . . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years .,, ,. . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

40-44 years . . .. . . . . . . . .

45yearsand over . . . . . . . .

live-birth cohort–Con.

II

II Birth weight

Total m 2,001

to

2,500

grams

8,717

16

1,342

2,633

2,041

1,508

784

174

8

6,664

7

990

2,188

1,570

1,162

606

132

8

2,053

9

352

644

471

347

188

42

4,057

11

679

1,336

901

683

80

2

3,018

6

468

1,022

683

503

275

59

2

1,039

5

211

314

218

180

90

21

2,377

2

400

784

583

396

170

40

2

1,854

1

312

600

458

315

135

31

2

523

1

88

184

125

81

35

9

2,501

to

3,000

3,001

to

3,500

grams

Numbar of deaths under 28 days

1,373

2

168

448

329

245

143

35

3

1,C99

138

353

253

206

115

31

3

274

2

30

95

76

39

28

4

586

1

68

185

134

110

72

15

1

454

53

150

104

84

53

9

1

132

1

15

35

30

26

19

6

221

21

54

55

63

25

3

156

14

43

38

44

15

2

65

7

11

17

19

10

1

84

5

20

32

9

17

1

66

4

16

27

7

12

18

1

4

5

2

5

1

II3,501 4,001 4,501

to to grams

4,000 4,500 or

grams grams more

15

1

4

5

3

2

13

1

3

5

3

1

2

1

1

2

2

2

2

2

2

2

2
Table 9. Deaths under 1 year of age, by birth weight, plurality of birth, color, age of mother, and aga at death: United States, 1960

Plurality of birth,

color, and

age of mother

PLURAL BIRTHS-Con.

Total

Mothers of all ages . . . .

Under 15years , . . . . , . . .

15-19 years . . . . . . . . . . .

20.24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

4044years . . . . . . . . . . .

45vearsand over . . . . . . . .

White

Mothers of all ages . . . .

Under 15years . . . . , . . . .

15.19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

4044years, . . . . . . . . . .

45yearsand over . . . . . . . .

All other

Mothers of all ages . . . .

Under 15years . , . . . . . . .

15-19 years . . . . . . . . . . .

20-24 years . . . . . . . . . . .

25-29 years, . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . .

40-44 years . . . . . . . . . . .

45yearsandover . . . , . . . .

live-birth cohort–Con.

Total

1,335

1

174

428

331

234

144

22

1

773

89

248

206

143

72

14

1

562

1

85

180

125

91

72

8

1,000 1,001 1,501

grams to to

or 1,500 2,000

less grams grams

25

1

3

5

6

7

3

17

2

2

6

4

3

8

1

1

3

3

154

25

53

32

24

16

4

91

15

31

18

12

11

4

63

10

22

14

12

5

Birth weight

m

Number of deaths at 28 days-11 months

319

41

94

81

66

33

4

185

20

51

51

45

15

3

134

21

43

30

21

18

1

420

63

136

109

62

44

5

1

230

31

77

65

37

17

2

1

190

32

59

44

25

27

3

282

31

9?

76

48

27

9

172

16

60

47

30

14

5

110

15

31

29

18

13

4

109

10

37

23

25

14

63

5

20

17

14

7

46

5

17

6

11

7

22

1

10

4

1

6

12

5

2

1

4

10

1

5

2

2

4

2

1

1

3

2

1

1

1

4,501

grams

or

more

57
Table 10. Infant mortality rates per 100,000 live births, by birth weight, age of mother, plurality, color, and age at daath: United States, 1960 live-birth cohort

Birth weight

1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to to to to to to grams

or 1,Wo 2,000 2,500 3,000 3,500 4,000 4,500 or

less grams grams grams grams grams grams grams more

Age at death, color,

and age of mother

Total

UNDER 1 YEAR OF AGE

Total —

Mothers ofall ages . . . . . .

Under 15years . . . . . . . . . . .

15-19 years . . . . . . . . . . . . .

20-24 years . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . .

35-39years . . . .. . . . . . . . . .

4044years . . . . . . . . . . . . .

45yearsandover . . . . . . . . . .

White

Mothersofallages . . . . . .

!Jnder15years . . . . . . . . . . .

15-19years . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . .

40.44years . . . . . . . . . . . . .

45yearsandover . . . . . . . . . .

All other

Mothersofallagas . . . . . .

Under15years . . . . . . . . . . .

15-19years . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . .

4044years . . . . . . . . . . . . .

45yearsandover . . . . . . . . . .

UNDER28DAYS OFAGE

T@

Mothersofallages . . . . .

Under15years . . . . . . . . . . .

15-19years . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . .

4044years . . . . . . . . . . . . .

45yearsandovar . . . . . . . . . .

See footnotes at end of table.

Rates per 1CJ3,000 live births (single and plural)

2,513.9

—

5,870.2

3,277.9

2,415.8

2,236.7

2,366.5

2,554.5

3,081.2

4,110.4

2,216.7

4,754.4

2,807.3

2,144.5

1,997.4

2,118.6

2,287.7

2,815.0

3,893.6

4,142.3

6,532.0

4,951.3

4,015.5

3,732.5

3,835.1

4,117.6

4,474.5

5,051.5

1,839.7

91,825.3

—

78,070.2

89,797.3

91,204.0

93,965.1

92,194.9

93,584.7

93,657.5

76,666.7

92,928.6

92,000.0

91,114.3

91,585.1

95,208.7

93,0CM.7

94,458.4

94,179.9

‘79,166.7

89,355.8

74,157.3

87,598.8

90,188.5

90,351.5

89,813.9

90,528.6

91,578.9

] 66,666.7

91,279.9

54,853.0

44,852.9

58,886.7

58,611.0

53,954.8

52,032.9

49,249.2

47,317.1

50,000.0

57,564.9

241,666.7

62,808.7

59,085.8

57,240.5

54,698.6

50,306.1

47,695.4

z 55,882.4

47,809.7

46,000.0

50,856.3

49,767.0

44,753.1

44,168.3

45,692.9

45,689.7

233,333.3

52,147.3

20,659.1 5,s44.9 1,899.5 1,014.5 797.4 832.9 1,327.4

26,130.7

21,686.3

21,694.4

20,169.4

19,008.5

18,623.1

21,052.6

22,222.2

21,895.5

30,303.0

24,173.2

22,S45.4

21,204.3

20,085.1

19,194.9

21,971.6

26,582.3

17,178.1

24,060.2

16,927.7

18,286.8

16,885.1

15,642.5

16,540.4

17,434.2

25,000.0

18,058.3

8,487.7

6,072.1

5,778.6

5,541.1

5,524.6

6,248.7

8,013.5

12,766.0

5,815.0

19,816.0

6,114.4

6,801.2

5,513.3

5,477.9

6,173.3

7,422.9

13,983.1

5,835.0

8,041.2

5,994.4

5,707.0

5,640.4

5,688.8

6,525.0

10,410.4

19,677.4

4,143.7

3,301.2

2,160.4

1,7s8.7

1,765.2

1,881.7

2,057.0

2,676.0

5,329.9

1,731.8

3,652.2

1,905.7

1,549.5

1,624.2

1,733.6

1,879.7

2,511.6

5,141.0

2,527,3

3,156.4

2,739.5

2,330.6

2,393.0

2,535.3

2,836.8

3,394.7

] 5,945.8

S83.2

1,952.2

1,221.4

973.2

919.9

942.0

1,107.8

1,589.8

1,809.7

885.3

‘ 1,691.5

1,021.6

857.9

812.0

840.0

958.4

1,443.5

1,694.9

1,742.4

2,126.2

1,891.0

1,673.6

1,600.7

1,552.4

1,995.9

2,455.3

2,35&9

469.0

2,000.0

1,005.6

781.4

696.4

759.2

S40.8

1,147.2

1,396.6

686.4

‘1,113.2

834.7

687.2

610.2

847.3

702,3

1,016.6

] 1,077.9

1,704.9

13,036.8

2,117.2

1,647.1

1,448.8

1,635.6

1,875.6

2,045.8

‘ 3,087.3

364.3

i 4,023.0

1,058.3

797.9

742.4

785.6

888.0

1,258.9

i 1.587.3

;00.4

11,904.8

854.6

710.2

631.6

841.2

703.5

1,0S5.6

1838.6

2,097.4

27,246.4

2,786.6

1,777.1

1,859.3

2,051.4

2,410.0

2,572.9

25,555,6

421.9

1,640.1

1,177.5

1,206.0

1,411.4

1,465.7

1,576.6

1561.8

1,120.7

1,281.7

993.9

1,039.4

1,246.6

1,153.3

1,383.6

2,808.0

3,534,6

2,827.8

2,618.9

2,516.7

3,210.4

2,569.2

a2,439.0

874.3

4,115,0

2,270.0

1,727.1

1,657.1

1,832.3

1,970.8

2,313.1

3,126.2

77,183.0

88,954.7

90,795.2

93,329.8

91,449.2

92,605.3

93,234.7

76,666.7

42,847.1

55,963.5

53,722.9

51,226.2

49,975.8

45,845.9

45,203.3

47,826.1

23,618.1

18,552.4

19,189.1

17,613.6

16,668.4

16,257.7

18,387.7

20,202.0

4,784.0

3,749.6

4,046.6

4.077.7

4,230.4

4,749.4

5,797.4

10,030.4

1,371.3

879.2

882.2

974.0

t ,154.3

1,267.7

1,721.2

3,045.7

] 637.5

426.4

418.5

448.4

516.6

622.5

945.9

1,167.5

1800.0

397.5

309.3

321.5

402.t

481.9

682.1

1977.7

11,724.1

444.0

374.4

384.8

416.7

585.8

749.3

1881.8

843.5

733.5

766.4

962.9

1,064.2

1,222.7

1561.8

58
Table IO. lnfantmotiality rates parl OO,MOliva Wrths, byti~hweight, ageofmother, pIuraliW, color, andaWatdeath: United States, 19601 ive-birth cohort-Con.

Age at daath, color,

and age of mother

UNDER 28 DAYS OF AGE-Con.

White

Mothers ofall agas . . . . . .

Under 15years . . . . . . . . . . .

16.19 years . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . .

2&29years . . . . . .. $.....

30.34years . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . .

4044years . . . . . . . . . . . . .

46yearsandover . . . . . . . . . .

All other

Mothersofallegea . . . . . .

Under16years . . . . . . . . . . .

15-19years . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . .

2&29yaars .$ $ . . . . . . . . . .

30-34yaars . . . . . . . . . . . . .

35.39y0ars . . . . . . . . . . . . .

4044years . . . . . . . . . . . . .

46yearsandovar . . . . . . . . . .

28DAYS-11 MONTHS OFAGE

—Total

Mothersofallages . . . . . .

Undar16years . . . . . . . . . . .

16.19yeara . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . .

25-29yeara, . . . . . . . . . . . .

30.34vaars . . . . . . . . . . . . .

36-39vears . . . . . . . . . . . . .

40-14vears . . . . . . . . . . . . .

46yearsandover. . , . . . . . . .

White

Mothersofallagas . . . . . .

LJndar15years . . . . . . . . . . .

15.19years . . . . . . . . . . . . .

20.24vears . . . . . . . . . . . . .

26-29years . . . . . . . . . . . . .

3034vears . . . . . . . . . . . . .

36-39years . . . . . . . . . . . . .

4044vaars . . . . . . . . . . . . .

45yearsendovar . . . . . . . . . .

Sea footnotes at and of table.

I

8irth weight

Total

1,687.8

3,208.2

2,038.3

1,590.2

1,534.5

1,696.6

1,841.4

2,204,5

3,181.4

2,671.9

4,652.3

3,093.8

2,533.9

2,423.3

2,635.9

2,728.6

2,936.4

2,886.6

674.2

1,755.2

1,007.9

688.8

579.6

534.2

583.8

748.1

9S4.2

628.9

1,546.2

769.0

554.3

4629

422.0

446.3

610.4

712.3

1,000

grams

or

less

92,414.1

92,000.0

90,386.0

91,313.0

94,639.5

92,471.7

93,576.8

93,915.3

279,168.7

88,374.8

73,033.7

88,585.3

89,415.2

89,524.5

86,442.7

89,207.0

80,526.3

166,686.7

845.5

f 877.2

S42.6

408.8

635.3

745.7

979.4

1422.8

514.5

728.3

1272.0

588.3

1533.0

1881.6

i 264.6

1,001 1,501 2,001 2,501 3,001

to to to to to

1,500 2,000 2,500 3,000 3,500

grams grams grams grams grams

55,509,C

241,666.7

60,879.4

56,858.3

64,904.1

53,402.5

47,801 .S

45,891 .S

252,941.2

43,416.2

43,000.C

46,81 2.S

44,811.5

40,925.9

39,866.2

39,700.4

42,241.4

133,333.3

2.705.7

12,205.9

2,703.2

2,888.1

2,728.6

2,057.1

3,303.3

12,113.8

22,173.9

2,055.9

2,029.3

2,137.5

2,336.3

1,286.2

2,504.2

‘ 1,803.6

12,941.2

Rates per 100,000 live births (single and plural)

19,844.1

125,757.6

21,837.3

20,820.8

19,167.6

18,190.6

17,307.3

19,632.4

25,316.5

13,032.2

22,556.4

12,228.4

14,358.0

12,618.1

11,903.7

12,616.3

13,486.8

2,600.6

$2,512.6

3,143.8

2,505.4

2,555.9

2,341.1

2,365.4

2,664.9

22,020.2

2,051.4

24,545.5

2,336.0

2,024.6

2,016.7

1,894.6

1,687.7

2,339.2

21,265.8

4,500.1

i 6,7’46.5

4,340.3

4,414.3

4,342.1

4,470.9

5,049.1

5,S44.6

11,440.7

3,073.4

4,123.7

2,663.3

2,680.1

3,134.5

3,3s4.0

3,650.0

5,605.6

‘6,451 .6

1.701.2

3,703.7

2,322.5

1,732.0

1,463.5

1,294.2

1,499.3

2,216.1

‘ 2,735.6

1,314.9

‘ 3,087.5

1,774.1

1,366.9

1,171.2

1,007.0

1,124.3

1,578.3

‘ 2,542.4

1,0C6.6

‘ 1,565.2

873.0

910.6

994.5

1,153.6

1,228.2

1,685.4

13,150.9

942.5

i 1,291.2

893.1

789.6

882.7

1,157.0

1,441.2

1,877.9

] 2,702.7

906.3

1,929.9

1,281.2

904.5

791.1

727.5

789.3

954.8

‘ 2,284.3

725.0

2,067.0

1,032.7

738.9

629.7

578.9

651.5

826.2

11,990.0

438.2

] 298.5

375.7

394.5

419.8

488.8

586.7

896.4

] 1,200.6

842.2

] 863.8

621.8

563.7

628.7

6s4.6

835.3

1,239.1

11,010.1

545.5

1,314.7

795.0

554.7

471.5

425.2

485.3

643.9

‘ 642.1

447.1

1,393.0

645.8

463.4

392.2

351.3

371.6

547.1

‘ 494.4

3,501

to

4,000

327,9

1556.6

342.3

288.8

288.6

349.8

413.6

630.4

i 912.1

661.2

11,301.5

756.9

487.4

510.8

811.0

991.5

1,038.2

* 1,327.4

433.2

11,100.0

608.0

472.1

374.9

357.2

359.0

465.1

‘ 419.0

358.5

1556.6

492.4

398.3

310.5

297.4

286.7

386.2

‘ 165.8

1

4,001 4,501

to grams

4,500 or

grams more

360.1

354.5

339.4

311.3

349.4

471.1

667.2

! 628.9

1,012.2

24,347.8

1,203.3

765.3

903.6

1,025.7

1,347.5

11,372.2

*2,222.2

410.9

12,288.9

614.3

423.5

377.6

367.0

322.1

509.5

‘ 705.5

340.3

i 1,904.8

500.1

370.8

320.3

291.8

232.4

418.4

‘ 209.6

768.4

780.2

629.2

693.0

877.8

894.4

1,037.7

1,632.8

] 1,178.2

1,671.0

1,389.6

1,540.8

2,049.2

12,173.9

‘ 243.0

453.1

796.6

444.0

439.6

448.5

391.5

] 353.9

352.3

501.5

364.7

346.5

370.8

258.9

1345.9

59
Table IO. lnfantmortality rates mrl OO,OOOlive Mnhs, by Mrthweight, ageofmother, plurality, color, andage atdeath: United States, 19601 ive-birth cohort–Con.

Birth weight

T

4,001 4,601

to grams

4,600 or

grams more

Age at death, color,

and age of mother

1,000 1,001 1,501

grams to to

or 1,500 2,000

less grams grams

2,001

to

2,5+)0

2,501 3,001

to to

3,0+30 3,500

grams grams

3,501

to

4,000

grams

Total

28 DAYS-11 MONTHS

OF AGE–Con.

All other

Mothereof all ages . . . . . .

Under 15 years . . . . . . . . . . .

15-19 years . . . . . . . . . . . . .

20-24 years . . . . . . . . . . . . .

25-29 years . . . . . . . . . . . . .

30-34 years . . . . . . . . . . . . .

35.39 years . . . . . . . . . . . . .

40-44ymrs . . . . . . . . . . . . .

45yearsandover . . . . . . . . . .

UNDER IYEAROF AGE

Total —

Mothersofallages . . . . .

Under15years . . . . . . . . . . .

15-19years . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . .

40-44years . . . . . . . . . . . . .

45yearsandover . . . . . . . . ,

White

Mothersofallages . . . . . .

Under15years . . . . . . . . . . .

15-19yaars . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . .

40.44years . . . . . . . . . . . . .

45yeareandover . . . , . . . . .

All Other ‘

Mothersofa[lages . . . . . .

Under 15years . . . . . . . . . . .

15-19years . . . . . . . .

20.24years . . . . . . . . . . . . .

25.29years . . . . . . . . . . . . .

30.34years . . . . . . . . . . . . .

35.39vears . . . . . . . . . . . . .

40.44vears . . . . . . . . . . .

45yearsandover . . . . . . . . . .

See footnotes at end of table.

60

Rates per 100,COO live births (single and plural)

4,146.9

] 1,503.B

4,699.3

3,928.7

4,267.0

3,738.7

4,022.1

‘ 3,947.4

25,000.0

1,470.4

1,B79.7

1,857.4

1,481.5

1,309.2

1,199.2

1,389.0

1,53B.1

2,164.9

2,325.2

981.0

21,123.6

] 1,033.4

1773.3

xB27.O

11,371.2

‘1,321.6

‘ 1,052.6

91,138.9

78,571.4

89,244.7

90,021.0

93,701.0

90,9S8.5

92,B95.B

93,798.4

75,000.0

92,164.5

269,473.7

90,754.B

90,248.8

95,000.0

91,656.6

94,50B.9

93,987.3

270,833.3

88,681.9

75,949.4

86,855.1

89,434.2

89,958.8

86,969.7

B7,228.3

82,957.7

1100,000.0

4,393.5

13,000.0

3,944.0

4,955.5

3,B27.2

4,302.1

5,992.5

r 3,448.3

55,342.9

44,697.0

56,256.7

57,031.6

54,401.1

52,905.2

51,197.4

47,227.5

50,000.0

58,169.6

‘41,1 76.5

62,850.5

59,669.3

57,730.0

55,687.4

51,599.7

47,990.5

256,666.7

4B,I 16.0

45,918.4

50,313.7

49,743.3

45,007.7

44,673.1

49,756.1

44,000.0

233,333.3

2,861.6 1,5S4.8

1,865.1

1,S46.3

1,561.0

1,510.4

1,37B.3

1,395.6

1,516.8

13,243.2

1,100.2

‘ 1,262.5

1,369.2

1,108.8

972.1

867.8

1,160.5

1,216.2

11,346.8

1,043.7

11,735.4

1,360.2

1,149.7

938.0

824.6

B84.I

1,007.6

:1,769.9

795.7

1,0S5.2

22,698.6

1,5B3.3

1,011.8

955.5

1,025.7

1,082.5

1,200.7

23,333.3

831.6

1,1 7&2

‘3,917.5

3,331.1

2,826.9

2,505.6

2,304.8

2,875.0

4,B04.B

23,225.B

12.356.4

] 1;166.8

1,229.3

1976.9

11,161.2

1395.3

Rates per 100,000 live single births

22,301.9 6,086.2 1,897.1 1,010.1 1,325.1

5,669.6

3,057.9

2,224.9

2,064.5

2,171.4

2,364.3

2,916.0

3,9s9.0

2,049.7

4,520.0

2,602.7

1,976.3

1,846.6

1,946.0

2,126.4

2,6B7.9

3,720.6

3,845.6

8,350.7

4,681.6

3,700.4

3,439.9

3,522.2

3,776.8

4,235.8

5,166.8

27,173.9

22,783.9

23,292.B

22,222.2

20,539.2

20,385.0

22,873.7

121,348.3

23,930.7

32,25B.1

25,655.1

24,B96.I

23,702.2

21,697.1

21,250.0

23,B79.O

226,087.0

17,851.8

24,590.2

17,466.1

16,676.8

17,561.7

16,935.9

17,331.9

19,047.6

‘ 5,000.0

8,612.4

6,085.0

5,926.0

5,861.9

5,969.6

6,721.7

8,716.3

13,245.0

6,157.1

‘ 10,322.6

6,162.0

6,022.3

5,918,0

6,005.4

6,791.8

8,194.4

14,027.1

5,916.6

8,050.8

5,910.4

5,627.7

6,665.8

5,846.7

6,462.3

10,B20.o

211,111.1

3,307.9

2,1 45.B

1,779.0

1,763.8

I,B79.o

2,085.0

2,713.3

5,447.5

1,737.B

3,677.B

1,897.2

1,646.2

1,632.8

1,741.7

1,928.5

2,567.o

5,254.2

2,4B9.1

3,156.4

2,709.0

2,302.2

2,345.2

2,484.3

2,769.5

3,350.B

L6.077.3

1,952.2

1,217.9

968.0

914.5

939.3

1,09B.6

1,603.6

1,816.1

B82.4

L1,691.5

1,019.2

654.8

806.6

B39.B

953.5

1,458.0

1,697.3

1,728.4

2,128.2

1,9B2. 1

1,655.4

1,596.6

1,535.8

1,963.5

2,468.8

12,389.1

2,000.0

1,004.8

778.6

694.9

759.3

B36.1

1,150.4

1,398.6

685.2

‘1,113.2

634.4

6B5.6

608.9

646.7

699.3

1,01 B.8

11,079.7

1,699.B

‘ 3,036.9

2,113.3

1,633.9

1,446.6

1,641.3

1,859.7

2,059.6

‘ 3,087.3

i 4,023.0

1,058.7

794.1

742.7

785.o

8B6.O

1,260.9

11,567,3

699.2

] 1,904.8

B54.9

705.9

631.8

642.0

700.9

1,053,3

i 83B,6

2,086.3

‘ 7,246.4

2,788,3

1,779.0

1,s60.7

2,036.9

2,416.2

2,577.3

25,555.6

1,641.7

1,177.9

1,195.5

1,412.2

1,456.6

1,576.6

1661,8

1,117.9

1,283.1

9941

1,027.6

1,249.1

1,164.4

1,3B3.6

2,809.4

3,534.6

2,831.4

2,618.9

2,619.3

3,210.4

‘ 2,569,2

a2,439.0
10ble 10. lnfantmortality rates perl OO,OOOlive tirths, by Krthweight, ageOfmOther, pluraliW, cOlor, andage at death: United States, 19601 ive-birth cohart-COn.

Age at death, color,

and age of mother

UNDER 28 DAYS OF AGE

Total —

Mothers of all ages , . . . . .

Undw15years . . . . . . . . . . .

16-19 was. . . . . . . . . . . . .

20.24 yam. . . . . . . . . . . . .

2b-29years . . . . . . . . . . . . .

30.34yws,. .,.,..,.. . .

36.39yaars . . . . . . . . . . . . .

40-44years, . . . . . . . . . . . .

45ymmandover.. . . . . , . . ,

Whita —

Mothersofa[lagtrs . . , . . .

Undw15years . . . . . . . . . . .

15-18Vmrs . . . . . . . . . . . . .

20-24ymrs . . . . . . . . . . . . .

25-29wIws . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . .

35.39yenrs . . . . . . . . . . . . .

4cW14yeats . . . . . . . . . . . . .

4bvew$.mdaver . . . . . . .

All other

Mmhcrsofdlagcs . . . . . .

UndwlKyears ..,...... . .

15-19yrmrs . . . . . . . . . . . . .

20-24yedr s . . . . . . . . . . . .

25-29yuclrf . . . . . . . . . . . . .

30.34ylklrs . . . . . . . . . . . . .

35-3!3years . . . . . . . . . . . . .

4044ymrs . . . . . . . . . . . . .

46yt,arstmdovw ...,.. . . . .

2812AYS-II MONTHS OFAGE

Total —

Mmhcrsofallages . . . . . .

Undw16years . . . . . . . . . . .

16-19yr.ws . . . . . . . . . . . . .

20.24wws.., . . . . . . . . . .

25-29years . . . . . . . . . . . . .

30.34y0ars . . . . . . . . . . . . .

35-39ycars . . . . . . . . . . . . .

40.44ymrs., . . . . . . . . . . .

46ycar$andovw . . . . . . . ,..

Se!! footnotes at end of table.

Birth weight

Total

1,668.9

3,913.7

2,067,3

1,554.8

1,502,9

1,657.4

1,803.9

2,174.4

3,011,3

1,532.2

2,960.0

1,644.1

1,433.7

1,396.4

1,536.0

1,691.4

2,0BI .9

3,024.5

2,423.2

4,478.7

2,863.2

2,273.6

2,175.9

2,372.8

2,471.5

2,709.9

2,953.6

656.2

1,756.0

990.7

670.1

561.5

514.0

560.4

741.6

977.7

1,000 1,001

grams to

or 1,500

1!?s5 grams

1,501

to

2,000

grams

2,001 2,501

to to

2,500 3,000

grams grams

1

Rates per 100,000 live single births

90,480.7

78,671.4

88,314.2

B9,601.2

93,S64.7

90,295.4

91,672.4

93,261.7

75,000.0

91,655.6

‘B9,473.7

89,950.9

B9,957.4

94,465.7

91,175.3

93,658.2

93,670.9

‘70,833.3

87,528.5.

75,949.4

65,724.4

86,683.6

8B,971.2

87,636.4

B5,587.B

91 ,!%9.3

100,000.0

658.2

930.5

419.8

636.3

693.2

‘1,023.5

151 6.B

52,740.1

42,424.2

55,6B5.6

54,262.7

51 ,66B.O

51,039.6

47,951.0

45,506.7

47,619.0

66,222.7

’41,176.5

60,970.0

57,663.0

55,334.8

54,541.7

49,285.2

46,BOB.5

‘53,333.3

43,836.3

42,657.1

46,546.8

44,866.5

4i,321.O

40,67B.O

43,170.7

40,000.0

33,333.3

2602.B -

~2,272.7

2,571.1

2,769.1

2,733.1

1,865.4

3,246.4

‘1,720.B

‘2,381.0

19,707.4

24,456.5

19,5BB.4

20,800.6

19,660.7

1B,3B5.O

18,042.7

19,900.9

219,101.1

21,866.2

z 27,419.4

23,24B.O

22,B1B.6

21,722.9

20,032.2

19,226.2

21,272.2

224,637.7

13,80B.9

22,950.B

12,B1 0.4

14,980.2

13,249.7

13,259.1

13,865.5

14,6B2.5

2594.6

-

12,717.4

3,185.5

2,492.3

2,541.6

2,154.2

2,342.3

2,972.7

~2,247.2

4,388.2

4,764.7

3,794.2

4,212.6

4,415.6

4,647.3

5,212.3

6,293.9

10,596.0

4,617.6

‘7,096.B

4,417.6

4,630.0

4,746.1

4,868.3

5,5B9.4

6,442.5

11,764.7

3,135.8

‘4,025.4

2,672.B

2,920.5

3,262.4

3,545.3

3,B17.3

5,594.B

27,407.4

1708.1

-

3,827.8

2,290.7

1,713.4

1,446.1

1,322.3

1,509.3

2,422.5

‘2,649.0

997.5

1,374.0

673.4

BB5.O

8B2.5

1,157.1

1,297.5

1.778.4

3,112.8

1,016.1

‘1,576.2

86B.8

915.3

1,O@.o

1,164.B

1,268.B

1,745.9

13,220.3

926.4

[1,291.2

B83.7

765.5

B64.9

1,123.5

1,423.2

1,920.2

‘2,762.4

899.6

1,933.6

1,272.5

B94.O

781.3

721.9

787.5

934.9

2,334.6

3,001 3,501

to to

3,500 4,000

grams grams

467.2

‘637.5

425.3

417.0

444.5

519.3

617.6

952.7

1,171.6

436.6

‘298.5

374.5

393.2

415.B

491.1

5B3.4

905.3

I1,202.3

638.7

]B63.B

620.9

561.5

625.8

68B.O

B21.9

1,234.3

1,023.9

542.8

1,314.7

792.6

551.0

470.0

420.1

480.8

650.8

1644.4

363.6

L900.C

397.1

30B.c

320.5

401.7

461.7

5B4.C

‘979.C

327.2

‘556.6

341.7

2BB.3

298.6

349.0

414.0

631.B

]913.6

661.3

1,301.5

757.5

495.6

512.3

813.B

98B.O

1,045.2

1,327.4

432.1

1,100.0

607.7

470.0

374.4

357.7

354.4

466.4

‘419.6

T

4,001 4,501

to grams

4,500 or

grams mora

421.6

‘ 1,724.1

444.2

372.5

354.9

419.2

566.4

750.5

IB61.B

359.7

354.6

337.2

311.4

349.B

471.5

668.3

‘ 628.9

1,013.3

14,347.8

1,204.1

766.1

904.5

1,026.4

1,351.0

] 1,374.6

22,222.2

410.0

‘ 2,29B.9

614.5

421.6

377.8

365.8

3197

510.4

1705.5

871.8

644.3

733.8

755.7

963.4

1,065.0

1,222.7

1561.6

765.4

7BI .0

629.4

680.9

87B.2

895.3

1,037.7

1,633.7

‘1,178.2

1,673.1

1,3B9.6

1,542.4

2,049.2

12,173.9

22,439.0

453.3

797.3

444.1

439.9

448.7

391.8

1353.9

61
Table IO. lnfantmortality ratwper 100,000 livetirths, bytirth weight, a&of mother, pluraliW, color, andageatdeath: United States,19601iv&.blrth cohort-Con.

AW at death, color,

and age of mother

28 DAYS-11 MONTHS

OF AGE-Ccm.

White

Mothers ofall agas . . . . . .

Under 15years . . . . . . . . . . .

15-19 years . . . . . . . . . . . . .

~20-24years . . . . . . . . . . . . .

25-29 years . . . . . . . . . . . . .

30-34vears . . . . . . . . . . . . .

35-39vears . . . . . . . . . . . . .

40+4vears . . . . . . . . . . . . .

45yearsandover . . . . . . . . . .

All other

Mothersofallages . . . . . .

Under15years . . . . . . . . . . .

15-19years . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . .

25.29years . . . . . . . . . . . . .

30-34years ..,......,., ,

35-39years . . . . . . . . . . . . .

4044years . . . . . . . . . . . . .

45vearsandover . . . . . . . . . .

UNDER IYEAROF AGE

Total —

Motheraofallages . . . . . .

Under15years . . . . . . . . . . .

15-19yeara . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . .

4044years . . . . . . . . . . . . .

45yearsandover. . . . . . . . . .

White —

Mothersofallages . . . . . .

Under15years . . . . . . . . . . .

15-19years . . . . . . . . . . . . .

20-24yeara . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . .

4044years . . . . . . . . . .. . . .

45yearsandover . . . . . . . . .

8irthweight

Total 1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to to to to to to grams

or 1,500 2,000 2,500 3,000 3,500 4,000 4,%0 or

less grams grams grams grams grams grams grams more

Rates per 100,000 live single births

517.4

1,560.0

758.6

542.6

450.2

40s.0

435.0

606.1

696.1

1,422.3

1,872.0

1,818.4

1,426.6

1,264.1

1,149.3

1,305.3

1,525.7

2,215.2

11,596.1

‘ 28,333.3

20,603.4

13,521,0

10,000.8

9,426.7

8,756.5

9,074.1

L13,235,3

10,718.9

29,166.7

19,820.0

12,515.4

9,246.1

8,771.3

7,916.9

8,362.0

19,565.2

508.9

1803.9

1281.4

1514.3

‘481.3

1850.7

1316.5

1,033.5

11,130.7

1750.6

] 967.7

11,333.3

11,630.4

a 1,408.5

95,819,6

275,000.0

92,537.3

96,474.8

95,273.1

97,872.3

96,587.9

93,023.3

1100,000.0

96,410.4

100,000.0

92,702.2

97,246.0

96,228.1

89,607.1

94,237.3

95,161.3

(’)

1,846.9

1,880.6

2,006.3

2,385.2

1,145.7

2,314.5

11,182.0

23,333.3

4,279.7

13,081.2

3,765.0

4,876.8

3,686.6

3,885.2

6,585.4

14,000.0

52,521.3

250,000.0

61,505.1

54,598.8

52,074.5

48,723.9

41,150.4

47,826.1

250,000.0

54,757.9

‘ 50,000.0

63,249.5

56,339.3

55,156.4

50,934.6

44,512.2

46,052.6

150,000.0

2,(XW.5

a4,838.7

2,407.1

2,077.5

1,979.3

1,664.9

2,023.8

2,606.9

‘ 1,449.3

4,042.9

i 1,639.3

4,655.8

3,686.5

4,312.0

3,676.9

3,468.4

] 4,365.1

25,000.0

1,338.6

13,225.8

1,764.4

1,392.3

1,171.9

1,037.1

1,202.4

1,751.9

12,262.4

2,782.6

] 4,025.4

3,237.6

2,707,2

2,403.4

2,301.4

2,645.0

5,125.3

23,703.7

721.8

i 2,101.6

1,028.4

730.9

623.6

57s.9

659.7

821.1

12,033.9

1,550.7

1,885.1

1,825.4

1,538.7

1,480.2

1,360.8

1,346.3

1,430.7

‘ 3,314.8

Rates per 100,000 live plural births

445.8

] 1,393.0

644.8

461.6

390.8

348.7

370.1

552.6

‘ 495.0

1,089.7

11,262.6

1,361.3

1,093.9

970.6

847.8

1,141.6

1,234.3

11,365.2

13,929.4

113,333.3

14,217.7

14,772.4

13,183.3

13,846.2

13,008.1

13,448.3

‘ 30,000.0

13,881.1

14,962.1

14,290.8

12,773.1

14,782.1

12,536.2

14,285.7

230,CKI0.O

3,950.5

‘ 4,761.9

5,S89.2

4,476,4

3,508.0

3,179.3

3,815.8

3,139.7

27,407.4

3,390.3

5,172.4

3,955.4

3,033.6

2,791.2

2,957.3

‘2,131.6

13,333.3

1,971.8

3,307.8

2,080.3

1,800.9

1,934.5

1,581.5

11,854.7

1,560.1

2,521.0

1,768.5

1,407.1

1,576.5

1,054.6

11,310.9

1,608.1

‘2,717.4

1,987.4

1,538.9

1,168.2

1,747.5

1312.5

1,273.6

i 1,946.1

1,456.3

1,450.7

668.9

11,304.0

357.9

] 556.6

492.7

397.3

310.4

237.7

285.3

387.1

] 166.1

1,038.5

11,735.4

1,355.8

1,138.3

834.3

827.6

871.7

1,014.4

] 1,768.9

1,674.2

22,222.2

13,050.1

11,380.4

1720.7

‘2,105.3

1,329.8

‘1,315.8

12,066.6

i 1,245.6

1835.1

11,552.8

339.5

] 1,904.8

EQO.2

386.6

320.4

292.1

229.6

419.1

1209.6

1,083.0

12,898.6

1,564.3

1,012.9

956.2

1,010.6

1,066,2

11,202.7

23,333.3

12,678.6

27,692.3

21,351.4

22,777.8

12,604.2

29,090,9

13,846.2

352.5

$502.1

W.s

346.7

371.0

‘ 259.2

1345.9

1,175.7

12,356.4

11,158.3

1,229.3

‘ 976.9

11,161.2

1395.3

a5,263.2

z 16,666.7

%5,882.4

116,666.7

See footnotes at end of table,
Table 10. lnfantmOrtality rates perl OO,OOOlive firths, bytirth weight, ageOfmother, plurality, colar, andageatdeath: United States, 19601 ive-birth cOhrxt-Ccm.

.

Age at death, color,

andagaof mother

UNDER1 YEAR OF AGE-Con.

All other

Mmhersofdlagm . . . . . .

Undw15years . . . . . . . . . . .

lG-19year5 . . . . . . . . . . . . .

20.24years . . . ...4..... .

25-29ymrs . . . . . . . . . . . . .

30.34yeurs . . . . . . . . . . . . .

35-39ycm-s . . . . . . . . . . . . .

40.44yews, . . . . . . . . . . . .

4Gymrscmdover, .,.......

UNDER280AYS OFAGE

Total —

Mothers of all ages

Undw15years . . . . .

15-19ycars , . . . . . ,

20-24years . . . . . . .

25-29years . . . . . . .

30-34vems . . . . . . .

3&39years . . . . . . .

40-44ycars . . . . . . .

45ycaraandover . . . .

white

Mothers of all ages

Undor15years . . . . .

15.19 yews , , , . . . .

20-24 yews . . . . . . .

25-29 yews . . . . . . .

30.34 yews . . . . . . ,

3G-3Slycws . , , . , . .

4044ycars . . . . . . .

4Liycwsand over . . . .

All Other

Mothers of all ages

Under 15 years . . . . ,

15-19 years . . . , . . .

70.24 years . . . . . . .

25-29 yc0rs . . . . . . .

30-34 years , . . . . . .

35.39 year~ , , . . . . .

40-44 ycCws , . . . , , .

46ywrsandover . . . .

L

Total

1,000

grams

or

less

15,113.9

‘27,777.8

22,S31 .S

17,735.7

13,215.1

12,126.2

12,104.3

12,077.3

10,056.1

226,666.7

1S,23S.7

11,746.4

S,605.3

8,161.2

7,412.2

8,055.6

z11,764.7

9,604.8

* 29,166.7

18,185.2

11,241.8

6,173.7

7,S10.2

7,076.1

7,560.1

217,391.3

11,885.7

z25,000.0

18,390.8

13,S61 .4

10,443.6

9,606.9

S,752.3

10,144.9

93,398.S

160,000.0

92,173.9

94,065.3

92,372.9

93,367.3

(’)

87,500.0

95,034.0

268,750.0

92,130.3

96,116.1

94,642.9

96,879.4

95,800.5

93,023.3

t 100,000.0

95,870.4

:100,000.0

92,307.7

97,056.0

95,391.1

98,821.2

93,220.3

95,161.3

(3)

92,685.1

250,000.0

91,739.1

93,175.1

92,372.9

91 ,S36.7

(’)

87,500.0

1,001

to

1,500

grams

46,251.0

250,000.0

56,321.8

49,878.9

43,710.7

42,272.7

32,258.1

256,250.0

49,325.6

250,000.0

57,887.1

51,141.6

49,364.9

45,939.7

37,610.6

43,478.3

250,000.0

52,195.9

250,000.0

60,348,2

53,571.4

53,070.7

49,065.4

41,158.5

40,789.5

250,000.0

41,278.6

250,000.0

50,574.7

44,552.1

39,308.2

36,818.2

28,225.8

256,250.0

6irth weight

m

Rates per 100,000 live plural births

14,083.5

11s,181.8

12,318.8

16,369.5

14,520.5

11,278.2

14,557.0

29,615.4

11,303.2

‘ 13,333.3

11,428.6

12,210.4

10,578.8

10,9S6.5

10,569.1

12,068.0

230,000.0

11,881.1

13,066.2

12,486.7

10,630.3

12,131.9

11,069.7

13,025.2

*30,000.O

9,458.1

‘1s,181.8

7,246.4

11,282.7

10,411.0

7,330.8

S,860.6

‘ 7,692.3

6,067.0

27,692.3

7,730.3

6,564.2

5,457.2

4,744.2

6,635.1

] 7,438.0

2,301.2

z4,761.9

3,046.6

2,579.8

1,934.5

2,033.3

2,368.4

12,354.8

‘ 3,703.7

2,250.3

3,263.5

2,613.7

1,866.8

1,937.7

2,239.1

1,744.2

26,666.7

2,496.3

‘ 7,692.3

12,467.1

2,444.1

2,212.4

2,41S.6

‘ 2,823.2

‘ 4,958.7

3,901.0

5,759.2

3,664.9

3,730.7

3,544.1

4,07s.0

‘ 4,424.6

S66.3

1,335.9

774.7

756.1

1,087.9

760.3

1463.7

742.0

‘ 1,176.5

738.3

629.0

937.4

] 550.7

1374.5

1,449.0

] 1,832.5

‘ 959.9

t 1,378.8

‘ 1,819.9

‘ 1,773.0

‘ S85.0

3,413.3

‘ 6,666.7

5,303.0

‘ 2,033.3

‘ 2,807.S

‘ 3,7s5.5

‘ 1,562.5

699.9

‘ 905.8

697.4

895.4

‘ 308.5

‘ 958.3

1312.5

651.7

] 865.S

‘ 647.2

890.2

‘ 286.3

‘ 823.6

‘ 960.0

‘1,111.1

‘ 1,010.1

‘ 924.2

‘ 432.0

‘ 1,577.3

21,562.5

m

‘ 3,636.4

‘7,142.9

16,571.4

22,222.2

‘5,172.4

‘ 676.7

21,111.1

‘871.5

‘ 166.9

‘ 540.5

‘ 526.3

1691.5

z 1,315.8

1771.2

‘ 889.7

‘ 626.3

i 310.6

1606.1

11,428.6

‘ 1,724.1

‘ 3,125.0

225,000.0

‘ S92.9

‘ 3,846.2

‘ 1,041.7

24,545.5

‘ 5,263.2

‘ 16,666.7

‘ 5,882.4

z 16,666.7

See footnotes at end of table.

63
Table IO. lnfantmonality mtesper 100,000 live Mmhs, bytirth weight, awofmother, pluraliW, color, andageatdeath: United States, 19601 ive-birth cohort-Con.

Age at death, color,

and aga of mother

28 DAYS-11 MONTHS OF AGE

Total —

Mothers of all ages . . . . . .

Under 15years . . . . . . . . . . .

15-19 years . . . . . . . . . . . . .

20-24 years . . . . . . . . . . . . .

25-29 years . . . . . . . . . . . . .

30-34yaars . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . .

40-44years . . . . . . . . . . . . .

45vearsandover . . . . . . . . . .

White

Mothers ofall ages . . . . . .

Under15years . . . . . . . . . . .

15-19years . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . .

4044years . . . . . . . . . . . . .

45vearsand.aver . . . . . . . . . .

All other

Mothersofallages . . . . . .

Under15years . . . . . . . . . . .

15-19years . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . .

4044years .,..,,..,.. . .

45yearsandover ..,.... . . .

Sirthweight

Total

1,m 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,601

grams to to to to to to to gramt

or 1,500 2,000 2,500 3,000 3,500 4,000 4,500 or

less grams grams grams grams grams grams grams more

Rates per 100,CQO live plural births

1540.1

-

21,666.7

2,364.S

1,774.6

1,395.6

1,265.5

1.344.3

1,01 S.5

21,470.6

1,114.1

1,634.6

1,273.6

1,072.5

961.2

640.7

1801.8

22,173.9

3,24S.2

12,777.S

4,441.0

3,674.3

2,771.6

2,519.4

3,352.0

11,932.4

585.6

96,250.0

1407.1

1359.7

1630.3

s992.9

1787.4

1540.0

1394.5

1189.9

1S3S.O

1785.9

11,016.9

‘713.6

210,000.0

1434.8

] S90.2

x1,530.6

3,195.7

3,617.9

3,457.3

2,709.6

2,784.2

13,539.s

24,347.8

2,561.9

12,901.4

2,767.9

12,0S5.7

] 1,869.2

13,353.7

25,263.2

4,972.4

15,747.1

5,326.9

14,402.5

15,454.5

i 4,032.3

2,626.2 1,649.3

2,789.7 2,822.6

2,562.0 1,886.5

2,604.5 1,573.6

2,959.6 1,146.0

2,439.0 1,447.4

11,379.3 17s4.9

Z3,703.7

2,000.0 1,140.0

1 ,s93.9 1,90s.9

1,s04.0 1,341.7

2,142.9 1,166.8

2,650.2 853.5

11,446.5 ‘718.2

11,260.5 1387.6

26,666.7

4,625.5 3,591.7

5,072.5 5,263.2

5,106.9 4,120.1

4,109.6 3,244.S

3,947.4 2,325.6

i 5,696.2 4,011.9

z 1,923.1 12,479.3

‘ Rate calculated with frequencies indicati ng fewer than 20deaths and more than 100 Iive births.

2Ratecalculatecl with frequencies indicating fewer than 20deaths and fewer than 100liva births.

1,105.4

1,972.0

1,305.6

1,044.s

836.5

S21 .2

11,391.0

818.1

11 ,344.5

1,030.2

77s.0

639.1

1514,0

1936.3

2,452.1

t 3,926.7

2,705.1

2,352.0

] 1,724.1

i 2,305.0

] 3,53?J.8

906.2

‘1,811.6

1,290.1

643.5

858.7

1789.2

622.1

‘ 1,0S2.3

809.1

1560.5

1572.6

1460.4

2,453.3

15,555.6

‘ 4,292.9

11,109.1

‘ 2,375.8

} 2,208.2

885.5

21,111.1

] 2,178.6

1613.5

1180.2

11,578.9

1638.3

x 1,285.3

] 355.9

‘ 208.8

11,242.2

13,030.3

z 7,142.9

27,142.9

22,222.2

23,448.3

11,785.7

23,846.2

21,351.4

‘2,777.8

] 1,562.5

24,545.5

13,846.2

23,125.0

‘ 25,000.0

3 Due to sampling variability, more deaths than births were counted in this cell.

64
Tablell. Births andsu~ivOm to28daya, bytirth might, pluraliW, color, andage0fm0ther: United &atas,19601ive-birth cohort

8irth weight

m

1,000

grams

or

less

1,001

to

1,500

gramsT

1,501 2,001

to to

2,000 2,500

grams grams

Color and

age of mother

4,501

grams

or

more

Total

TOTAL

Live births All live births

Ii4,257,850 24,323 27,756

6,780 114 136

566,966 4391 5,476

1,426,912 7,563 8,864

1,092,816 5,667 6,157

687,722 4,023 4,132

359,908 2,042 2,331

91,564 473 615

5,182 30 46

217,436 787,037 1,616,643 I

Mothers ofaH ages . . . . 61,905 1,139,043 317,813 65,994

T

2,510 1,000 174

231,697 136,640 29,953

563,508 374,708 93,747

415,265 302,992 85,802

247,869 193,751 61,861

123,852 102,518 35,700

30,129 25,602 10,009

1,713 1,432 567

Under 15years . . . . . . . . .

15.19 years, ,,, ...,...,

20-24 years, ,,, ...,...,

25-29 years . . . . . . . . . . . .

30-34 years .,, ,. ..,...,

36-39 vear.s . . . . . . . . . . . .

40-44 years..,,,..,,,,,

45 Vearsand over . . . . . . , .

198

11,578

19,558

13,694

9,611

5,665

1,501

99

50,726

152

9,430

15,805

11,282

8,009

4,744

1,225

79

45,676

66

7,620

14,620

10,413

7,284

4,397

1,197

79

36,612

49

5,956

11,576

8,415

5,959

3,636

962

59

648

37,417

70,553

50,838

33,921

18,676

5,054

329

1,968

125,347

272,649

194,658

117,392

59,163

14,873

788

30

4,268

15,542

17,745

15,162

9,961

3,108

178

65,417

30

4,232

15,428

17,608

15,016

9,855

3,070

177

57,910

10

3,589

13,986

15,874

13,215

8,497

2,602

137

57,465

10

3,561

13,698

15,764

13,089

8,421

2,575

137

65

Survivors to 28 davs

208,426

617

36,014

67,698

48,765

32,486

17,768

4.761

296

779,220

1,942

124,245

270,442

192,760

116,037

58,413

14,617

764

Mothers of all agas . . . . . 4,179,520

. 6,501

573,642

1,402,268

1,074,707

875,121

352,815

69,446

5,020

3,600,744

2,524

458,130

1,219,962

942,112

588,402

307,426

77,976

4,212

3,539,971

2,443

448,792

I,200,562

927,655

576,419

301,765

76,257

4,078

2,121

26

485

698

378

344

151

32

7

17,493

25

2,746

5,514

4,216

3,002

1,586

378

24

1,327

2

264

479

226

226

102

23

5

13,282

78

2,411

4,102

3,003

2,067

1,260

337

24

20,040

36

3,548

6,503

4,537

3,066

1,797

499

34

8,916

21

1,388

2,799

2,046

1,438

938

270

16

1,606,962

2,494

230,709

661,150

413,403

246,588

123,081

28,644

1,693

1,372,650

1,005

183,931

483,857

358,479

212,376

106,015

25,771

1,416

1,366,834

1,002

783,240

481,948

356,974

211,338

105,383

25,540

1,399

1,134,894

991

136,296

373,549

302,018

192,972

102,024

25,626

1,418

1,014,875

539

118,608

337,915

271,863

171,802

90,415

22,527

1,206

1,011,547

536

118,202

336,939

271,048

171,201

90,041

22,385

1,195

316,472

171

29,820

93,396

85,489

61,602

35,498

9,934

562

267,680

105

26.795

Undar15Vears . . . . . . . . . .

15-19 years . . . . . . . . . . . .

20-24 Veals.,,,.....,..

25-29 Vaars . . . . . . . . . . . .

30-34 Veals . . . . . . . . . . . .

35-38 Veals . . . . . . . . . . . .

4044 Veals . . . . . . . . . . . .

45yearsandover , . . . . . . . .

WHITE

All live births

Mothars of all ages . . . . . 163,131

163

24,238

53,644

39,704

26,415

14,676

4,055

236

621,089

575

87,055

217,885

158.969

95,696

46,200

12,104

603

Under 16 Vears . . . . . . . . . .

15.19 Vaars, . . . . . . . . . . .

20-24 Veals . . . . . . . . . . . .

26-29 Veals . . . . . . . . . . . .

30-34 years . . . . . . . . . . . .

35-39 years . . . . . . . . . . . .

40-44 years, b,.,,...,..

45 Vaarsandovar . . . . . . . . .

86;038

78,057

55,524

31,841

8,643

477

266,644

105

26,700

85,746

77,814

55,330

31,691

8,764

474

Survivors to 28 davs

Mothers of all ages . . . . . 614,636

566

86,295

215,901

157,388

84,594

47,608

11,900

584

155,780

152

23,186

51,276

37,980

25,234

13,935

3,818

2C9

Under 15years . . . . . . . . . .

16-19 Vaars, . . . . . . . . . . .

20-24 Veals . . . . . . . . . . . .

25-29 Veals . . . . . . . . . . . .

30-34 Veals . . . . . . . . . . . .

36-39 years . . . . . . . . . . . .

4044years . . . . . . . . . . . .

46yearsandover , . . . . . . . .
Table Il. Nrthsand survivors ta78days, bytirth weight, zluraiiTf, color, andagaof mother: United Statas, 19601 ive-birth cohoti-Con.

Birth weight

Total 1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to to to to to to grams

or 1,500 2,000 2,500 3,000 3,500 4,000 4,500 or

Iess grams grams grams grams grams grams grams more

Color and

age of mother

ALL OTHER All live births

Mothers of all ages . . . . . 657,VX 6,830 7,716

100

1,927

2,361

1,620

1,046

534

116

12

4,366

57

1,023

1,303

957

629

322

67

8

22,937

132

4,784

7,331

4,976

3,270

1,879

523

42

10,840

76

2,120

3,353

2,405

1,601

978

285

22

16,229

133

3,968

4,938

3,281

2,327

1,268

304

20

14,114

103

3,474

4,229

2,867

2,050

1,108

263

20

49,758

184

10,108

15,889

10,684

7,381

4,312

1,211

89

39,952

139

8,128

12,584

B,501

6,024

3,534

970

72

54,305

485

13,179

16,909

11,134

7,506

4,000

999

93

165,948

1,394

38,292

54,964

35,687

21,694

10,963

2,769

185

243,693

1,505

47,766

79,651

56,786

36,493

17,837

4,358

297

124,168

461

18,232

36,793

31,129

21,949

12,103

3,276

226

123,347

455

18,084

36,610

30,970

21,771

11,983

3,241

223

1,136,833

1,000

‘136,750

374,249

302,340

193,196

102,138

26,730

1,430

1,132,699

991

138.207

373,084

301,371

192,420

101,646

25,554

1,416

30,133

69

3,158

7,708

7,746

6,337

3,859

1,168

80

29,828

66

3,120

7,650

7,675

6,272

3,807

1,150

B8

317,589

174

29,943

93,695

86,766

61,787

35,664

9,993

667

316,250

171

29,810

93,346

85,453

61,628

35,462

9,918

562

6,o84

20

679

1,566

1,671

1,947

1,484

506

41

7,962

20

671

1,530

1,846

1,917

1,434

495

40

66,956

30

4,284

16,536

17,733

16,154

9,953

3,108

178

65,381

30

4,228

15,422

17,599

15,008

9,847

3,070

177

4,258 89

128,836 1,645

206,950 2,059

150,704 1,451

99,320 1,021

52,482 454

13,588 95

970 6

Under 15years . . . . . . . . . .

15-19 years . . . . . . . . . . . .

20-24 years, . . . . . . . . . . .

25-29 years, . . . . . . . . . . .

30-34 years . . . . . . . . . . . .

35-39 years, . . . . . . . . . . .

40-44 years, . . . . . . . . . . .

45yearsand0ver . . . . . . . . .

Survivors to 28 days

Mothers of all ages . . . . . 639,549 784 52,636

465

12,828

16,422

‘f0,785

7,252

3,854

943

87

164,384

1,376

37,950

54,541

35,372

21,443

10,805

2,717

180

242,128

1,492

47,469

79,202

56,429

35,250

17,688

4,304

284

Under 15years . . . . . . . . . .

15-19 years . . . . . . . . . . . .

20-24 years . . . . . . . . . . . .

25-29 Years . . . . . . . . . . . .

30-34 years 4 . . . . . . . . . . .

35-39 years . . . . . . . . . . . .

40-44 years . . . . . . . . . . . .

45yearsand0ver . . . . . . . . .

4,058

124,850

201,706

147,052

96,702

51,050

13,189

942

24

221

219

‘152

118

49

9

2

TOTAL All Iive single births

Mothers of all ages . . . . . 4,171,166 20,054 191,971 761,527

1,965

123,775

265,679

187,382

111,654

55,875

14,226

771

1,604,541

2,510

231,145

560,640

411,691

244,961

122,078

?’3,809

1,707

Under 15years . . . . . . . . . .

15-19 years . . . . . . . . . . . .

20-24 years . . . . . . . . . . . .

25-28 years . . . . . . . . . . . .

30-34 years, . . . . . . . . . . .

35-39 years . . . . . . . . . . . .

40-44 years . . . . . . . . . . . .

45years and over . . . . . . . . .

6,720

579,608

1,402,794

1,069,088

669,232

349,196

89,404

5,114

4,101,553

6,457

567,626

1,380,983

1,053,030

658,140

342,897

87,460

4,960

98

3,654

6,193

4,715

3,318

1,661

387

28

“1,909

21

427

644

327

322

135

26

7

627

35,185

63,382

43,911

28,511

15,636

4,417

302

Survivors to 28 days

Mothers of all ages . . . . . 183,547

597

33,850

80,712

41,972

27,186

14,821

4,139

270

753,931

1,938

122,694

263,526

185,541

110,362

55,150

13,973

747

1,697,044

2,494

230,162

658,302

408,861

243,689

121,324

29,525

1,687

Undar15yaars . . . . . . . . . .

15-19 years . . . . . . . . . . . .

20-24 years . . . . . . . . . . . .

25-29 years . . . . . . . . . . . .

30-34 years . . . . . . . . . . .

35-39 years . . . . . . . . . . . .

40-44 years . . . . . . . . . . . .

45vears and over . . . . . . . . .

66
Table 11. 8kths and survivom to 28 days, by birth weight, tJluraliW, COIW. and a9e Of mother: united States, KJWI iive-iiirth cohort-aM.

Color and

age of mother

WHITE

Mothers of all ages

Undar 15 years , , . . .

15-19 yaars . . . . . . .

20-24 years . . . . . . .

26-29 years . . . , . , .

30-34 years . . . . . . ,

35-39 years , . . . . , .

40-44 years . . . . . . .

45 years and over . . . .

Mothers of all ages

Under 15 years . . . . .

15-19 years , . . . , . .

20-24 years . . . . . . .

26-29 years . . . . . . .

30-34 years . . . . . . .

35.39 years , . . . . . .

40-44 years . . . . . . .

45 yaars and over . . . .

ALL OTHER

Mothers of ail ages

Undnr 15 years . . . . .

15.19 years , . . . . . .

20.24 years , . , , . , .

25-29 years . . . . . . .

30.34 vears . . . . . . .

. . . .

. . . .

. . . .

. . . .

. . . .

,.. .

. . . .

,. ...

. . . .

. ...!

. . . .

. . . . .

. . . .

. ...!

. . . . .

. . . . .

. . . . .

. . . . .

. . . . .

. . . . .

. . . . .

. . . . .

. . . .

. . . . .

35-39 Veals . . . . . . . . . . . .

4044years . . . . . . . . . . . .

45yearaand over , . . . . . . . .

Mothers of all ages , . . . .

Undar15yaers . . . . . . . . . .

15.19 years . . . . . . . . . . . .

20.24 years . . . . . . . . . . . .

25-29 years, ,, .,,..,...

30-34 years . . . . . . . . . . . .

35-39 years, ., ..,.,....

40.44 years . . . . . . . . . . . .

46yaarsandover . . . , . . . . .

Total

3,531,362

2,500

452,686

1,200,490

922,904

673,524

298,862

76,230

4,166

3,477,253

2,426

444,338

1,183,279

910,017

564,703

293,807

74,643

4,040

639,804

4,220

126,922

202,304

146,194

96,708

50,334

13,174

948

624,300

4,031

123,288

197,704

143,013

93,437

49,090

12,617

920

Birth weight

1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to grams

or 1:;0 2:;0 2,500 3%0 3:00 4;00 4,500 or

less grams grams grams grams grams grams grams more

14,345

19

2,239

4,461

3,500

2,493

1,293

316

24

1,197

2

225

448

183

220

82

20

7

5,709

?9

1,415

1,732

‘1,215

825

368

71

4

712

18

202

196

134

102

53

6

16,488

34

3,031

5,383

3,674

2,444

1,469

423

30

7,218

20

1,183

2,278

1,641

1,111

745

225

14

6,449

98

1#753

1,948

1,302

826

410

100

12

3,622

56

937

1,074

764

490

233

60

8

36,426

62

6,564

11,793

8,033

5,586

3,360

959

69

28,461

45

5,038

9,102

6,288

4,467

2,714

755

52

13,332

122

3,544

4,098

2,551

1,795

952

252

20

11,491

94

3,080

3,482

2,213

1,557

820

215

20

All live single births

142,956 600,065

165 571

22,614 85,865

47,905 212,061

34,133 152,928

22,080 91,004

12,308 45,476

3,539 11,570

221 590

Survivors to 28 days

136,069

144

21,615

45,687

32,513

20,983

11,821

3,311

185

All live

49,015

472

12,571

15,477

9,778

6,431

3,327

678

81

593,968

562

85,119

210,120

151,365

69,944

44,888

11,368

571

gle births

161,462

1,394

37,910

53,818

34,454

20,650

10,399

2,656

181

Survivors to 28 davs

47,478

453

12,235

15,025

9,459

6,203

3,200

828

75

159,963

1,376

37,575

53,406

34,156

20,416

10,251

2,605

178

1,362,723

1,005

183,469

481,385

355,446

208,931

104,558

25,515

1,414

1,356,773

1,002

182,782

479,492

353,968

208,900

103,948

25,284

1,397

241,818

1,505

47,676

79,255

56,245

35,030

17,520

4,294

293

240,271

1,492

47,380

78,810

55,893

34,789

17,376

4,241

280

1,012,995

539

118,532

337,526

271,301

171,323

90,093

22,477

1,204

1,008,680

536

118,127

336,553

270,491

170,725

89,720

22,335

1,193

123,838

461

18,218

36,723

31,039

21,873

12,045

3,253

226

123,019

455

18,080

36,541

30,880

21,695

11,926

3,219,

223

287,488

105

26,787

85,994

7B,027

55,454

31,815

8,829

477

286,454

105

26,692

85,704

77,784

55,260

31,665

8,770

474

30,101

69

3,156

7,701

7,739

6,333

3,849

1,164

90

29,786

66

3,118

7,642

7,669

6,268

3,797

1,146

88

57,876

10

3,585

13,982

15,862

13,208

8,489

2,602

137

57,433

10

3,557

13,894

15,754

13,093

8,413

2,575

137

20

679

1,554

1,871

1,945

1,464

506

41

7,948

20

671

1,528

1,845

1,915

1,434

495

40

67
Table 11. 8irths and survivors to 28 days, by birth weight, plurality; color, and age of mother: United States, 1960 live-birth cOhOrt-Cpn.

Birth weight

Total 1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to to to to to to grams

or 1,500 2,000 2,500 3,000 3,500 4,000 4,500 or

less grams grams grams grams grams grams grams more

Color and

age of mother

TOTAL All live plural births

Mothers of all ages . . . . . 86,684 4,269 4,819 224 38

60

7,358

24,118

23,718

18,490

10,712

2,160

68

77,967

44

6,016

21,285

21,677

16,981

9,918

1,986

60

69,382

,24

5,444

19,472

19,208

14,878

8,564

1,746

46

62,718

17

4,454

17,283

17,638

13,716

7,968

1,614

38

12,147

15

1.470

25,465 25,510 12,002 2,210

4

691

1,533

1,181

862

452

92

4

16

737

1,390

952

705

381

86

2

21

2,232

7,171

6,927

5,410

3,040

637

27

4

1,572

6,970

7,274

5,738

3,288

847

17

Undar15years . . . . . . . . . .

15-19 years . . . . . . . . . . . .

20-24 years, . . . . . . . . . . .

25-29 years . . . . . . . . . . . .

30-34 years . . . . . . . . . . . .

35-39 years . . . . . . . . . . . .

40-44 years . . . . . . . . . . . .

45yearsand over . . . . . . . . .

552

2,868

3,674

2,908

1,774

320

6

11,918

547

2,848

3,642

2,899

1,757

319

6

10,127

462

2,472

3,033

2,445

1,457

256

2

10,061

458

2,456

3,006

2,438

1,445

256

2

90

459

652

555

380

72

2

2,195

89

455

847

552

378

72

2

1,880

76

388

562

479

322

50

2

1,867

75

386

557

476

321

50

2

10

52

36

74

36

16

4

6

12

8

8

36

4

6

10

8

8

34’

4

4

12

6

8

32

4

4

10

6

8

3;669

3,110

2,230

1,353

280

10

10,774

13

1,302

3,221

2,781

1,985

1,210

255

7

9,250

4

1,056

2,827

2,380

1,698

1,037

238

10

8,151

4

918

2,474

2,127

1,492

922

207

7

Survivors to 28 davs

Mothers of all ages . . . . . 212

5

58

54

51

22

16

6

3,148

6

507

1,053

716

509

295

62

130

39

31

33

6

20

3

(1)

2,442

2

281

749

598

466

282

52

2

3,552

2

517

1,120

863

642

328

76

4

1,698

1

205

520

405

327

193

45

2

24,879 25,289

4

1,551

6,916

7,219

5,675

3,263

644

17

222

10

50

36

74

36

16

192

8

44

30

70

26

14

190

8

42

30

70

26

14

Under 15years . . . . . . . . . .

15-19 years . . . . . . . . . . . .

20-24 years . . . . . . . . . . . .

25-29 years . . . . . . . . . . . .

30-34 years . . . . . . . . . . . .

35-39 years . . . . . . . . . . . .

4044years . . . . . . . . . . . .

45yearsand over . . . . . . . . .

20

2,164

6,986

6,793

5,300

2,968

622

26

WHITE All live plural births

20,175 21,024

4

1,190

5,824

6,041

4,694

2,724

534

13

Mothers of all ages . . . . .

Under 15years . . . . . . . . . .

16-19 years . . . . . . . . . . . .

20-24 years . . . . . . . . . . . .

25-29 years . . . . . . . . . . . .

30-34 years . . . . . . . . . . . .

35-39 years . . . . . . . . . . . .

4044years . . . . . . . . . . . .

45years and over . . . . . . . . .

8

1,624

5,739

5,571

4,335

2,367

516

15

Survivors to 28 days

19,721 20,868

4

1,176

5,781

6,003

4,650

2,709

532

13

Mothers of all ages . . . . .

Under 15 years . . . . . . . . . .

15-19 years . . . . . . . . . . . .

20-24 years . . . . . . . . . . . .

25-29 years . . . . . . . . . . . .

30-34 years . . . . . . . . . . . .

35-39 years . . . . . . . . . . . .

4044years . . . . . . . . . . . .

45yearsand over . . . . . . . . .

8

1,571

5,589

5,467

4,251

2,314

507

14

See footnote at end of table.

68
Table Il. Births andsuwivom to28days, by Wrthweight, plurali~, color, and age of mother: United States, 19601 ive-birth cohort-Con.

Color and

age of mother

ALLOTHER

Mothers ofall ages . . . . .

Under 15years . . . . . . . . . .

15-19 years . . . . . . . . . . . .

20-24 years . . . . . . . . . . . .

25-29 years . . . . . . . . . . . .

30.34 years . . . . . . . . . . . .

35-39 years . . . . . . . . . . . .

40-44 years . . . . . . . . . . . .

45yearsandovar . . . . . . . . .

Mothers of all ages . . . . .

Under 15years . . . . . . . . . .

16-19 years . . . . . . . . . . . .

20-24 yews . . . . . . . . . . . .

26-29 years . . . . . . . . . . . .

30-34 years . . . . . . . . . . . .

35-39 years m. . . . . . . . . . .

4044 years . . . . . . . . . . . .

45 yewsand over . . . . . . . . .

Total

17,302

36

1,914

4,646

4,510

3,612

2,148

414

22

15,249

27

1,562

4,002

4,039

3,265

1,960

372

22

I I I

1,000

grams

or

less

1,121

10

230

337

236

196

86

24

2

82

5

19

23

18

16

(1)

3

2

1,001

to

1,500

grams

1,267

2

174

413

318

220

124

16

744

1

86

229

193

139

89

7

--L1,501 2,001

to to

2,000 2,500

grams grams

2,897

11

414

842

730

532

316

52

2,623

9

384

747

654

493

288

48

Birth weight

1

2,501 3,001

to to

3,000 3,500

grams grams

All Iive plural births

5,290

13

608

1,432

1,356

1,075

673

121

12

4,486

382

1,146

1,233

1,044

584

113

4

Survivors to 28 days

5,158

12

593

1,397

1,326

1,049

654

115

12

4,421

375

1,135

1,216

1,025

554

112

4

1,875

90

396

541

463

317

64

4

1,857

89

392

536

461

312

63

4

I

3,501 4,001

to to

4,000 4,500

grams grams

330

14

70

90

76

5B

22

328

14

69

90

76

57

22

32

2

B

6

4

10

2

32

2

8

6

4

10

2

4,501

grams

or

more

4

2

2

4

2

2

‘ Duetosampling variabil ity, there were more deaths than births counted in this cell andtha number of survivors was therefore Iassthan zero,

69
Table 12. Probabilities cfdying atages28 days-11 months ~rlOO,O~sumivors, by Wmhweight, pIuratiW, color, and me of mother: UnitedStat&19601ive-birth

Plurality, color,

and age of mother

ALLBIRTHS

Total —

Mothers ofall ages . . . . . . . .

Under 15years . . . . . . . . . . . . .

15-19 years . . . . . . . . . . . . . . .

20-24 years . . . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . . . .

40-14years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . .

White —

Mothersofallages . . . . . . . . .

Under15years ...,.... . . . . . .

15-19years . . . . . . . . . . . . . . . .

20-24years . . . . . . . ...< . . . . .

25-29years . . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . . . . .

40-44years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . . .

All other

Mothersofallagos . . . . . . . . .

Under15years . . . . . . . . . . . . . .

15-19years ., . . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . . .

35-39years . . . . . , . . . . . . . . . .

40-44years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . . .

See footnotes at end of table.

cohort

II Birthmmight

Total

1,000 1,001 1,501 2,001 2,501 3,001 3,601 4,001 4,501

grams to to to to to to

or 1,500

grams

2,000 2,500 3,000 3,:00 4,000 4,500 or

less grams grams grams grams grams grams grams more

Probability of dying per 100,000 survivors

686.$

1,s30.:

1,031.2

700.C

589.4

544.2

595.5

765.8

1,015.9

53s.0

1,596.4

785.0

563.2

470.1

429.3

454.7

624.2

735.7

1,510.8

1,971.4

1,916.7

1,520.0

1,341.7

1,231.6

1,428.0

1,584.7

2,229.3

7,402.2

‘ 3,846.2

7,626.9

4,441.3

9,523.8

8,720.9

13,245.0

16,250.0

6,782.2

7,575.B

‘3,131.5

10,619.5

27,078.6

13,725.5

‘ 4,347.8

6,43S.3

14,166.7

27,692.3

7,305.9

7,894,7

11,864.4

12,244.9

11,111.1

5,654

s3,846.:

6,1 38.!

6,240.!

5,594.4

4,112:

6,111.’

23,857.C

14,166.;

4,620,$

5,187.:

4,986.1

5,1s0.[

2,781 .E

4,787.4

23,333.:

16,250.C

7,764.5

i 5,263.2

7,429.1

8,979.3

6,478.8

7,154.2

9,937.9

15,970.1

3,173.9

23,2B9.5

3,860.0

3,100.3

3,102.3

2,809.3

2,824.6

3,265.3

i 2,531.6

2,559.3

] 6,122.4

2,988.6

2,557.0

2,495.5

2,315.8

2,282.7

2,910.6

11,694.9

4,768.3

‘ 1,941.7

5,354.?

4,587.4

4,883.2

4,243.9

4,602.9

‘4,582.7

5,000.0

1,774.7

3,889.8

2,413.0

1,s05.1

1,525.7

1,351.4

1,574.0

2,352.4

‘ 3,040.5

1,376.9

23,2S8.5

1,B54.6

1,451,0

1,224.3

1,054.1

1,1s4.1

1,676.3

z2,B70.8

2,952.4

‘4,086.0

3,422.2

2,910.7

2,536.9

2,385.5

2,883.9

5,090.1

3,448.3

915.,

1,956.;

1 ,292.(

912.I

788.$

736.(

799.!

971.E

‘ 2,356.C

732.4

~2,120.1

1,041.8

745.7

636.0

5S6.7

659.6

640.3

12,054.8

1,5s9.9

1,8S9.5

1,863.0

1,573.1

1,523.8

1,394.4

1,416.0

1,545.8

3,333.3

548;

1,323:

79B.~

557.’

473.(

427.~

488<

650.C

2649.7

449.1

z1,397.2

648.3

465.2

383.9

353.0

373.8

552.1

1500.4

1,107.3

‘ 1,273.5

1,377.7

1,116.1

978.2

873.S

1,170.3

1,231.4

1,360.5

434.8

21,110.0

610.4

473.6

376.1

358.8

360.7

468.3

2423.1

359.6

2559.7

494.1

389.5

311.4

298.5

2B9.9

388.7

a 167.4

1,050.7

z 1,758.2

1,370.6

1,155.4

942.8

831.4

892.9

1,018.2

z 1,783,7

412.:

——

22,3Kr.:

617S

425.1

379.[

368.!

324.C

513.4

3771.7

341.5

z 1,984.8

501.9

372.0

321.3

292.8

233.5

421.2

1211.0

1,096.3

13,030.3

1,602,6

1,019.6

964.2

1,0?S.4

1,077.0

21,217.4

‘ 3,409.1

457.1

803.4

447.2

443.0

452.9

386.7

z35s.3

355.0

2506.6

367.0

348.9

374.1

261.3

2349.5

1,194.7

2,384.5

1,176.5

1,246.6

3991.1

1,185.5

2404.0

70
Table 12. Probabilitlesof dying atages28 days-11 months wrl OO,OOOsurvivors, by Mtihweight, pluraliW, cOlOr, and age of mothen United States, 19601 ive-birth

Plurality, color,

and age of mother

SINGLE BIRTHS

Total —

Mothers ofall ages . . . . . . . . .

Under 16years . . . . . . . . . . . . . .

16-19 years . . . . . . . . . . . . . . . .

20-24years ..,,..,.,.. . . . . .

25.29years . . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . . . . .

4044years . . . . . . . . . . . . . . . .

46yearsandover . . . . . . . . . . . . .

White

Mothersofallages . . . . . . . . .

Under16years .,..,,... . . . . .

l&19years . . . . . . . . . . . . . . . .

20.24years . . . . . . . . . . . . . . . .

26.29yeare . . . . . . . . . . . . . . . .

30.34years . . . . . . . . . . . . . . . .

35.39years . . . . . . . . . . . . . . . .

40-44years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . . .

All other

Mothersofallages . . . . . . . . .

Undw15years . . . . . . . . . . . . . .

16.19years . . . . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . . . . .

25-29yeara ..,...,,.,.. . . . .

30.34years . . . . . . . . . . . . . . . .

35.39years . . . . . . . . . . . . . . . .

4044years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . . .

cohort-Con.

6i rth weight

Total

1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to to to to to to grams

or 1,500 2,000 2,500 3,000 3,500 4,000 4,500 or

less grams grams grams grams grams grams grams more

Probability of dying per 100,000 survivors

667.4

1,S27.5

1,011.6

680.7

570.1

522.7

570.7

758.1

1,008.1

525.5

1,607.6

772.8

550.5

456.6

414.4

442.5

618.9

717.8

1,457.6

1,959.B

1,B72.O

1,459.8

1,292.2

1,177.3

1,338.4

1,568.2

2,282.6

6,914.6

7,962.5

4,037.3

9,174.3

7,142.9

12,592.6

i 7,692.3

6,09B.6

‘ 8,000.0

‘2,901.8

29,326.4

25,454.5

L13,414.6

‘ 5,000.0

8,286.5

17,920.8

a6,632.7

28,955.2

110,784.3

[ 11,320.8

‘ 16,666.7

5,507.4

13,947.4

5,801.9

6,054.3

5,654.9

3,B1O.1

6,237.2

23,157.9

14,545.5

4,447.2

4,818.3

4,738.9

5,362.6

2,520.3

4,563.8

‘ 2,222.2

17,142.9

7,620.1

‘ 5,357.1

7,043.8

8,845.4

6,282.7

6,734.7

11,588.0

‘ 6,666.7

3,231.4

13,597.1

3,973.9

3,146.9

3,164.3

2,639.4

2,85B.O

3,711.3

‘ 2,777.8

2,642.2

16,666.7

3,136.2

2,691.7

2,528.6

2,081.9

2,505.5

3,311.3

11,923.1

4,690.6

12,127.7

5,339.8

4,336.6

4,970.6

4,238.9

4,024.4

‘5,116.3

15,000.0

1,7s6.5

4,020.1

2,381.1

1,7B8.8

1,512.9

1,386.7

1,592.3

2,5B5.2

22,963.0

1,407.4

23,472.2

1,846.9

1,459.9

1,230.3

1,091.4

1,273.6

1,872.5

22,564.1

2,872.9

z 4,194.3

3,326.5

2,7SS.7

2,4S4.4

2,3B5.9

2,750.0

5,434.8

‘ 4,000.0

908.7

1,960.8

1,283.7

902.0

789.0

730.3

797.8

951 .B

22,409.6

729.2

22,135.2

1,037.4

737.7

630.2

583.7

668.2

835.7

‘2,101.6

1,576.4

1,B69.5

1,B41 .7

1,548.5

1,493.1

1,376.2

1,365.7

1,458.7

13,409.1

545.4

1,323.2

796.0

553.3

472.1

422.3

483.8

657.1

2652.0

447.8

‘ 1,397.2

647.2

463.4

392.4

350.4

372.3

557.7

~501.1

1,096.7

‘ 1,273.5

1,369.8

1,100.1

976.9

853.7

1,151.0

1,249.7

11,379.3

433.7

21,130.0

610.1

471.5

375.6

359.1

356.1

469.6

‘ 423.7

359.1

2659.7

494.4

398.5

311.3

298.7

286.4

389.5

2167.6

1,045.4

‘ 1,758.2

1,366.2

1,143.9

939.1

834.3

880.4

1,025.2

‘ 1,793.7

411.7

z2,339.2

617.2

423.2

379.2

367.3

321.5

514.2

3711.7

340.7

21,904.8

502.0

369.9

321.4

293.2

230.5

421.9

‘211.0

1,094.1

‘ 3,030.3

1,603.6

1,020.7

964.9

1,021.1

1,079.8

1,219.5

13,4C9.1

457.3

‘ 804.2

2447.4

443.2

2453.1

2396.1

2358.3

355.2

2506.0

367.1

349.1

374.2

261.5

2349.5

1,195.3

‘ 2,384.5

z1,178.0

1,246.6

2892.2

‘1,185.5

‘ 404.0

See footnotes at end ot table,

71
Table 12. Probabilities of dying atages28 days-11 months per 100,OWsurvivors, bytirth weight, plurality, color, anda~of mother: United States, 196011vo.birth

Plurality, color,

and age of mother

PLURAL BIRTHS

Total

Mothers of all ages . . . . . . . . .

Under 15years . . . . . . . . . . . . . .

15-19 years . . . . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . . . . .

25-29years . . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . . .

35-38years . . . . . . . . . . . . . . . .

40-44years . . . . . . . . . . . . . . . .

45yearsandover . . . . . . . . . . . . .

White

Motharsofallages . . . . . . . . .

Under15years . . . . . . . . . . . . . .

15-19years . . . . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . . . . .

25-29yeara . . . . . . . . . . . . . . . .

30-34yeers . . . . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . . . . .

40.44years . . . . . . . . . . . . . . . .

45yaarsandover . . . . . . . . . . . . .

All other

Mothersofallages . . . . . . . . .

Under15years . . . . . . . . . . . . . .

16-19years . . . . . . . . . . . . . . . .

20-24years . . . . . . . . . . . . . . . .

2E-29years . . . . . . . . . . . . . . . .

30-34years . . . . . . . . . . . . . . . .

35-39years . . . . . . . . . . . . . . . .

40-44ywrs . . . . . . . . . . . . . . . .

45yaarsandover . . . . . . . . . . . . .

cohort-Ccm.

Birth weight

Total

1,712.3

12,272.7

2,S92.3

2,01 O.B

1,527.0

1,378.0

1,451.9

‘1,107.B

i 1,666.7

1,232.5

1,988.2

1,434.9

1,167.9

1,042.6

904.7

1B67.4

2,631.6

3,685.5

‘ 3,703.7

5,441.7

4,497.B

3,034.8

2,787.1

3,673.5

:2,150.5

1,000

grams

or

less

11,792.5

120,000.0

15,172.4

19,259.3

t 11,764.7

‘31,818,2

118,750.0

113,076,9

] 5,128.2

16,451.6

IB,181.8

66,656.7

15,000.0

(’)

‘ 9,756.1

120,000.0

:5,263,2

113,043.5

11B,750.o

(3)

1,001 1,501 2,001

to to to

1,500 Z,ooil 2,5W

grams grams grams

6,306.3

B,591.1

7,076.1

5,351.2

5,150.2

15,673.8

17,692.3

5,359.2

27,317.1

5,861.5

24,444.4

23,669.7

z 5,699.5

a8,8B8.9

B,467.7

111,627.9

9,607.0

27,253.9

28,633.1

15,618.0

Probability of dying per 100,000 survivors

2$60.8

3,149.0

2,918.3

2,912.6

3,324.9

2,727.3

21,658.6

2,269.7

2,178.6

2,051.4

2,387.7

3,016.1

‘ 1,626.9

11,448.3

5,106.7

5,46B.8

5,756.4

4,5S7.2

4,259.6

a6,250.0

a2,083.3

1,6B8.2

2,911.3

1,946.B

1,604.6

1,169.8

1,4B2.5

a803.8

13,846.2

1,166.3

1,973.3

1,377.7

1,189.0

870.4

2734.7

a394.5

t 7,142.9

3,683.6

5,336.3

4,223.3

3,318.3

2,383.2

4,128.4

a 2,608.7

1,115.1

1,89B.7

1,315.8

1,052.8

S45.8

827.5

21,397.5

824.2

21,360.5

1,037.9

782.9

545.2

1516.8

‘ 939.8

2,488.1

24,000.0

2,731.3

2,3B4.9

‘ 1,756.1

z 2,346.6

23,571.4

914.8

‘ 1,828.2

1,288.2

649.4

862.4

1786.8

826.2

21,081.7

814.3

2565.5

1574.2

24s4.4

2,477.1

] 5,618.0

14,336.7

21,119.4

a2,386.1

22,243.6

1,002.3

i 1,123.6

22,197.6

‘618.2

a181.2

21,587.3

2642.7

L1,295.3

~359.1

2210.1

r 1,246.1

.-

13,048,8

‘ 7,142.9

‘ 7,246.4

12,222.2

13,50S.8

S1,801.8

14,000.0

11,351.4

~2,777.8

11,578.9

x4,761.9

] 3,B46.2

13,125,0

‘ 25,000.0

'Rate calculat~with frequencies indicating fwerthan ~deathsandfewr than 100 Iive births.

2Ratecalcu latdwith frequencies in&eating fwerthan 20 deaths and more than 100 live births.

aDuatosampling variaMlity, there wremore deaths than Mrths counted in this cell andthe number of survivors was therefore Iess than zero.

72
Table 13. Deaths underl yearofage, bytirth weight, color, plurality, andage at death: United States, 19601 ive-birth cohort

Birth weight

I 1 I I I

4,501

grams

or

more

Color, plurality, and

age at death

1,000

grams

or

less

1,001 1,501

to

2,000

grams

2,001 2,501 3,001

to to

3,000 3,500

grams grams

3,501 4,001

to

4,500

grams

Total

to

4,000

grams

to

1,500

grams

to

2,500

grams

1 1 1 1 I

TOTAL

All births

Under l year, . . . . . . . . .

Under 28days . . . . . . .

Under 7days . . . . . .

Under lday . . . . .

l-6days . . . . . . .

7-27days . . . . . . . .

28 days-11 months . . . . .

Single births

Under l year . . . . . . . . . .

Under 28days , . . . . . .

Under 7days . . . . . .

Under lday . . . . .

l-6deys . . . . . . .

7-27days . . . . . . . .

28 days-11 months . . . . . .

Plural births

Under l year . . . . . . . . . .

Under 28days . . . . . . .

Under 7days . ,. . . .

Undarl day . . . . .

l~days . . . . . . .

7.27days . . . . . . . .

28 days-11 months , . . . .

Number of deeths under 1 year of age

107,038 22,359 15,225 12,789 12,709 14,950 16,400 9,083 2,647 876

78,330

70,031

43,317

26,714

8,299

28,708

96,986

69,613

61,852

37,873

23,979

7,761

27,373

10,052

8,717

8,179

5,444

2,735

538

1,335

22,202

2f,748

17,535

4,213

454

157

18,277

18,145

17,749

14,183

3,566

396

132

4,082

4,057

3,999

3,352

647

68

25

14,474

13,507

8,299

5,208

967

751

12,694

12,097

11,277

7,048

4,228

820

597

2,531

2,377

2,230

1,251

979

147

164

11,179

10,349

5,550

4,799

830

1,610

11,087

9,806

9,112

5,041

4,071

694

1,291

1,692

1,373

1,237

609

728

136

319

9,010

7,899

3,873

4,026

1,111

3,699

11,703

8,424

7,423

3,665

3,758

1,001

3,279

1,006

586

476

208

268

110

420

7,817

6,249

2,984

3,265

1,568

7,133

14,447

7,596

6,086

2,903

3,183

1,510

6,851

503

221

163

81

82

58

282

7,581

5,714

2,819

2,895

1,867

8,819

16,207

7,497

5,656

2,788

2,868

1,841

8,710

193

84

58

31

27

26

109

4,149

3,059

1,476

1,583

1,080

4,934

9,046

4,134

3,047

1,468

1,579

1,087

4,912

37

15

12

8

4

3

22

1,341

1,042

543

499

577

464

238

226

113

299

874

575

462

236

226

113

299

2

2

2

2

299

1,306

2,641

1,339

1,040

541

499

299

1,302

6

2

2

2

4

73
Table 13. Deaths undar 1 year of age, by birth weight, color, plurality, and age at death: United States, 1960 live-birth cohort–Con.

Color, plurality, and

age at death

WHITE

All births

Under l year . . . . . . . . . .

Under 28days . . . . . . .

Under 7days . ., . . .

Under lday . . . . .

l-6days . . . . . . .

7-27days . . . . . . . .

28 days-n months . . . . .

Single births

Under l year . . . . . . . . . .

Under 28days . . . . . . .

Under 7 days . . . . . .

Under lday . . . . .

I-Bdays . . . . . . .

7-27 days . . . . . . . .

28 days-11 months . . . . .

Plural births

Under lyaar . . . . . . . . . .

lJnder 28 days . . . . . . .

Under 7 days . . . . . .

Under lday . . . . .

l-6days . . . . . . .

7-27 days . . . . . . . .

28 days-11 months . . . . .

Birth weight

Total

79,819

60,773

55,007

33,886

21,121

5,766

19,046

72,382

54,109

48,687

29,698

18,989

5,422

18,273

78437

6,664

6,320

4,188

2,132

344

773

1,000 1,001 1,501

grams to to

or 1,500 2,000

less grams grams

! 1

16,256

16,166

15,900

12,958

2,942

266

90

13,221

13,148

12,917

10,436

2,481

231

73

3,035

3,018

2,983

2,522

461

35

17

11,536

11,124

10,513

6,523

3,990

611

412

9,591

9,270

8,758

5,531

3,227

512

321

1,945

1,854

1,755

992

763

99

91

Number of deaths under 1 year of age

10,001

9,064

8,534

4,567

3,967

530

937

8,717

7,965

7,521

4,158

3,363

444

752

1,284

1,099

1,013

409

604

86

185

9,486

7,341

6,623

3,27B

3,345

718

2,145

8,802

6,887

6,236

3,111

3,125

651

1,915

684

454

387

167

220

67

230

10,756

6,253

5,150

2,472

2,678

1,103

4,503

10,428

6,087

5,030

2,411

2,619

1,067

4,331

328

156

120

61

59

36

172

12,154

6,016

4,620

2,267

2,353

1,396

6,138

12,025

5,950

4,574

2,242

2,332

1,376

6,075

129

66

46

25

21

20

63

6,966

3,32B

2,496

1,213

1,283

832

3,638

6,941

3,315

2,484

1,205

1,279

831

3,626

25

13

12

8

4

1

12

2,015

1,036

804

419

385

232

979

2,010

1,034

802

417

385

232

976

5

2

2

2

3

649

445

367

189

178

78

204

647

443

365

187

178

78

204

2

2

2

2

74
Tabla 13. Daaths under 1 year of age, by birth weight, color, plurality, and aga at death: United Statas, 1960 Iiva-birth cohort–Con.

II Birth weight

Color, plurality, and

age at death

1,000

grams

or

less

1,001

to

1,500

grams

1,501

to

2,000

grams

4,501

grams

or

more

Total

ALLOTHER

All births

Under l year, ..,......

Undar28days . , . . . . .

Under 7days , . . ,. .

Under lday . . . . .

l-6days . . . . . . .

7-27 days . . . . . . . .

28 days-11 months . . . . .

Singla births

Under l year . . . . . . . . . .

Under 28days . . , . , . .

Under 7 days , ,. . . .

Undarl day . . . . .

I%days . . . . . . .

7-27 days . . . . . . . .

28 days-11 months . . . . .

Plural births

Number of deaths under 1 year of age

27,219 6,103 3,689 2,788 3,223 4,194 4,24E 2,117 632 227

17,557

15,024

9,431

5,593

2,533

9,662

24,604

15,504

13,165

8,175

4,990

2,339

9,100

2,615

2,053

1,859

1,256

603

194

562

6,036

5,848

4,577

1,271

188

67

5,056

4,997

4,832

3,747

1,085

165

59

1,047

1,039

1,016

830

186

23

8

3,350

2,994

1,776

1,218

356

339

3,103

2,827

2,519

1,517

1,002

308

276

586

523

475

259

216

48

63

2,115

1,815

983

832

300

673

2,380

1,841

1,591

883

708

250

539

408

274

224

100

124

50

134

1,669

1,276

595

681

393

1,554

2,901

1,537

1,187

554

633

350

1,364

322

132

89

41

48

43

190

1,564

1,089

512

587

465

2,630

4,019

1,499

1,056

492

564

443

2,520

175

65

43

20

23

22

110

1,565

1,094

55>

54:

471

2,681

4,?82

1,547

1,082

546

536

465

2,635

64

18

12

6

6

6

46

821

563

263

300

258

1,296

2,105

819

563

263

300

256

1,286

12

2

2

10

‘132

97

49

48

35

95

227

132

97

49

48

35

95

238

124

114

67

327

631

305

238

124

114

67

326

1

1

Under l year . . . . . . . . . .

Under 28days . . . . . . .

Under 7days . . . . . .

Undarl day . . . . .

l-6days . . . . . . .

7-27days . . . . . . . .

28 days-11 months . . . . .

75
Table 14. Infant mortality rates per 100,000 live births, by birth weight, color, plurality, and age at death: United States, 1960 live-birth cohort

n

Color, plurality,

and age at death

T-L

All births

Under 1 year of age .

Under 28 days . .

Under 7 days .

Under 1 day

1-6 days . .

7-27 days . . .

28 days-11 months

. .

. .

.,

. .

. .

. .

. .

Single births

Under 1 year of aga

Under 28 days .

Under 7 days

Under 1 day

1-6 days . .

7-27 days . . .

28 days-11 months

. .

. .

. .

. .

. .

. .

. .

Plural births

Under 1 year of age .

Under 28 days . .

Under 7 days .

Undar 1 day

1-6 days .

7-27 days . . .

28 days-11 months

. .

. .

. .

. .

. .

.,

. .

. . . . . .

. . . . . .

. . . . . .

. . . . . .

. . . . . .

. . . . . .

. . . . . .

. . . . . .

. . . . . .

. . . . . .

. . . . . .

. . . . . .

. . . . . .

. . . . . .

,. ...,

. . . . . .

. . . . . .

. . . . . .

. . . . . .

., ..,.

. . . . . .

Birth weight

Total 1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to to to to to to grams

or 1,500 2,000 2,500 3,000 3,500 4,000 4,500 or

less grams grams grams grams grams grams grams more

Rate per 100,000 Iiva births

2,513.9

—

1,838.7

1,644.8

1,017.3

627.4

194.9

674.2

2,325.2

1,666.9

1,482.8

908.0

674.9

186.1

656.2

11,596.1

10,056.1

9,435.4

6,280.3

3,155.1

620.6

1,540.1

91,925.3

—

91,279.9

89,413.3

72,092.3

17,321.1

1,866.6

645.5

91,138.9

90,480,7

88,506.0

70,724.0

17,782.0

1,974.7

658.2

95,619.6

96,034.0

93,675.3

78.519.6

15,155.8

1,368.6

585.6

54,853.0

52,147.3

46,663.4

28,899.8

18,763.5

3,483.9

2,705.7

55,342.9

52,740.1

49,165.1

30,727.6

18,437.6

3,575.0

2,602.8

62,521.3

49,325.6

46,275.2

25,959.7

20,315.4

3,050.4

3,195.7

20,659.1

18,058.3

16,717.6

8,965.4

7,752.2

1,340.8

2,600.8

22,301.9

19,707.4

18,312.6

10,131.0

8,181.6

1,394.8

2,594.6

13,829.4

11,303.2

10,183.6

4,190.3

5,993.2

1,119.6

2,626.2

5,844.9

4,143.7

3,632.8

1,781.2

1,851.6

511.0

1,701.2

6,096.2

4,388.2

3,866.7

1,909.1

1,967.6

521.4

1,708.1

3,950.5

2,301.2

1,869.2

816.8

1,052.4

432.0

1,649.3

1,899.5

883.2

794.0

379.1

414.8

199.2

906.3

1,897.1

997.6

799.2

381.2

418.0

198.3

899.6

1,871.8

866.3

639.0

317.6

321.4

227.4

1,105.4

1,014.5

469.0

363.5

174.4

179.1

115.5

545.5

1,010.1

467.2

352.5

173.8

178.7

114.7

542.8

1,608.1

699.9

483.3

258.3

225.0

216.6

908.2

797.4

364.3

268.6

129.6

139.0

95.7

433.2

795.7

363.6

268.0

129.1

138.9

95.6

432.1

1,674.2

678.7

543.0

362.0

181.0

135.7

995.5

832.9

421.9

327.9

170.9

167.0

94.1

410.9

831.6

421.6

327.5

170.3

157.1

94.1

410.0

2,678.6

892.9

892.9

892.9

1.785.7

1,327.4

874.3

703.1

360.6

342.5

171.2

453.1

1,325.1

871.8

700.5

357.8

342.7

1713

4533

5,263.2

5,263.2

5,263.2

5,263.2

76
Table 14. Infant mortality rates per 100,000 live births, by birth weight, COIor, plurality, and age at death: United States, 1960 live-birth cohort–Con,

6irth weight

and

Color,

age

WHITE

plurality,

at death m All births

Under lyearofage . . . . . . . . ,

Under 2Sdays . . . . . . . . . ,

Under 7 days . . . . . . . . .

Under lay . . . . . . . .

l-6days . . . . . . . . . .

7-27days . . . . . . . . . . .

28 days-11 months . . . . . . . .

Single births

Under lyeerofage . . . . . . . . .

Under 28days . . . . . . . . . .

Under 7days . . . . . . . . .

Under lay . . . . . . . .

l-6days . . . . . . . . . .

7-27 days . . . . . . . . . . .

28deys-11 months . . . . . . . .

Plural births

Under lyearofaga . . . . . . . . .

Under 28days . . . . . . . . . .

Under 7 days . . . . . . . . .

Under lay . . . . . . . .

1.6days .,.,... . .

7-27 days . . . . . . . . . . .

28deys-11 months . . . . . . . .

1,001 1,501

to to

1,500 2,00il

grams grams

1,000

grams

or

less

4,001

to

4,500

grams

4,501

grams

or

mora

Total

Rate.per 100,000 live births

2,216.” 92,928.6 57,564.8 21,896.5 5,815.0 1,731.8 885< 686.1 7oo.~ 1,120.7

1,687.1

1,527:

941.’

586.[

160.1

528.!

2,049.i

1,532.:

1,378.7

841 .C

537.7

153.5

517.4

10,718.9

9,504.8

9,109.0

6,036.1

3,072.8

495.8

1,114.1

92,414.1

90,893.5

74,075.3

16,818.2

1,520.6

514.5

92,164.5

91,655.6

90,045.3

72,750.1

17,285.2

1,610.3

508.9

96,410.4

95,870.4

94,758.6

BO,I 14.4

14,644.2

1,111.8

540,0

55,509.0

52,460.1

32,549.9

19,910.2

3,C48,9

2,055.9

58,169.6

5+3,222.7

53,117.4

33,545.6

19,571.8

3,106.3

1,946.9

54,75?.:

52,195.9

49,408.8

27,927.8

21,480.9

2.767.2

2,561.8

19,844.1

18,683.8

9,998.7

8,685.1

1,160.3

2,051.4

23,930.7

21,866.2

20,647.3

11,414.9

9,232.4

1,218.8

2,064.5

13,881.1

11,881.1

10,951.4

4,421.6

6,529.7

929.7

2,000.0

4,500.1

4,059.9

2,009.4

2,050.5

440.1

1,314.9

6,157.1

4,817.6

4,362.2

2,176.2

2,186.0

455.4

1,339.6

3,390.3

2.250.3

1,918.2

827.6

1,080.5

332.1

1,140.0

1,006.8

829.2

388.0

431.2

177.6

725.0

1,737.8

1,016.1

838.2

401.8

436.5

177.8

721.8

1,560.1

742.0

570.8

280.1

280.6

171.2

818.1

436.:

336.!

165.1

171.4

101.7

447.1

882.4

436.6

335.6

164.5

171.1

101.0

445.8

1,273.8

651.7

454.2

246.9

207.4

197.5

622.1

327.g

245.$

119.!

126.4

82.C

358.E

685.2

327.2

245.2

119.0

126.3

82.0

357.9

1,329.8

691.5

638.3

425.5

212.8

53.2

638.3

3s0.1

278.$

145.C

133.:

80.E

340.2

699.2

359.7

279.o

145.0

133.9

80.7

339.5

2,604.2

I ,041.7

I ,041.7

1,041.7

1,562.5

768.4

633.7

326.4

307.4

134.7

352.3

1,117.9

765.4

630.7

323.1

307.6

134.8

352.5

5,882.4

5,882.4

5,S82.4

5,882.4

77
Table 14. Infant mortality rates per 100,000 live births, by birth weight, color, plurality, and age at death: United States, 1960 live-birth cohort-Con.

Color, plurality.

and aga at deeth

ALLOTHER

All births

Under lyearofege . . . . . . . . .

Under 28days . . . . . . . . . .

Under 7days . . . . . . . . .

Under l day . . . . . . . .

l-6days . . . . . . . . . .

7-27davs . . . . . . . . . . .

28 days-11 months . . . . . . . .

Bingla births

Under lyaarofage , . . . . . . . .

Under 28days . . . . . . . . . .

Under 7 days . . . . . . . . .

Under ldey . . . . . . . .

l-6days . . . . . . . . . .

7-27days . . . . . . . . . . .

28 days-11 months . . . . . . . .

Plural births

Under lyearofage . . . . . . . . .

Under 28days , ,. . . . , . . .

Under 7days . . . . . . . . .

Under lay, . . . . . . .

l-6days . . . . . . . . . .

7-27days . . . . . . . . . . .

28 days-11 months . . . . . . . .

Total

II Birth weight

4,142.3

2,671.9

2,2S6.4

1,435.2

851.2

3B5.5

1,470.4

3,645.6

2,423.2

2,057.7

1277.7

778.9

385.6

1.422.3

15,113.9

11,865.7

10,744.4

7,259.3

3,485.1

1,121.3

3,248.2

1,000 1,001

II

1,501 2,001 2,501

grams to to to to

or 1,!300 2,000 2,500 3,000

less grams grams grams grams

89,355.8

88,374.8

85,622.3

67,013.2

18,608.1

2,752.6

981.0

88,561.9

87,528.5

S4,638.3

65,633.2

19,005.1

2,890.2

1,033.5

93,398.8

92,685.1

90,633.4

74,041.0

16,592.3

2,051.7

713.6

47,808.7

43,416.3

38,S02.5

23,017,1

16,785.4

4,613.8

4,393.6

48,116.0

43,S36.3

38,060.3

23,523.0

15,537.3

4,775.9

4,279.7

46,25* .0

41,278.6

37,490.1

20,442.0

17,046.1

3,788.6

4.972.4

Rate per 100,000 live births

17,179.1

13,032.2

11,1 S3.7

6,057.1

5,126.6

1,s48.6

4,146.9

17,851.8

13,80S.9

11,933.7

6,623.2

5,310.5

1,675.2

4,042.9

14,083.6

9,45s.1

7,732.1

3,451 .B

4,280.3

1,725.9

4,625.5

5,935.0

3,073.4

2,349.7

1,085.7

?,254.0

723.7

2,861.6

6$18.6

3,135.8

2,421.7

1,130.3

1,291.4

714.1

2,782.8

6,0S7.0

2,495.3

1,662.4

775.0

907.4

812.9

3,591.7

2,527.3

842,5

562,3

308.5

353.7

2s0.2

1,664.8

2,489.1

928.4

654.0

304.7

349.3

274.4

1,560,7

3,801.0

1,449.0

958.6

445.8

512.7

490.4

2,462.1

3,001 3,501 4,001

to to

3?&o 4,000 4,500

grams grams grams

1,742.4

542.2

448.9

226.5

222.4

193.3

1,100.2

1,726.4

639.7

447.4

225.8

221.7

192.3

1,068.7

3,413.3

960.0

640.0

320.0

320.0

320.0

2,453.3

1,704.9

661.2

453.4

211.8

241.6

207.8

1,043.7

1,689.8

661.3

454.6

212.4

242.3

2(X5.7

1,03s,5

3,636.4

606.1

606.1

3,030.3

2,087.4

1,012.2

768.8

411.5

378.3

222.3

1,085.2

2,086.3

1,013.3

780.7

411.9

378.7

222.6

1,063.0

3,126.0

3,126.0

4,601

grams

or

mom

2,808.0

1,632,9

1,199.9

606.1

683.6

433.0

1,176.2

2,808.4

1,633.7

1,200.6

606.4

684.1

433.2

1,176.7

7a
Table 15. Births and survivors at selected age intervals up to 28 days, by birth weight, color, and plurality: United States, 1960 live-birth cohort

Birth weight

1,000 1,001 1,601 2,001 2,501 3,001 3,501 4,001

grams to to to to to to to

or 1,500 2,000 2,500 3,000 3,500 4,000 4,500

less grams grams grams grams grams grams grams

Color, plurality,

and age

4,501

grams

or

more

Total

TOTAL

All births

Births. . . . . . . . . . . .

Idly . . . . . . . . . . . . . . .

7days, . . .. i . . . . . . . . .

28davs . . . . . . . . . . . . . .

Singla births

Births . . . . . . . . . . . .

Idly, . . . . . . . . . . . . . .

7days . . . . . . . . . . . . . . .

28days . . . . . . . . . . . . . .

Plural births

Numberofbirths and survivors

4,257,850 24,323 27,756 61,905 217,436 787,037 1,616,543 1,139,043 317,813 65,984

317,270

316,771

315,472

317,589

317,048

316,549

316,250

224

222

222

222

287,680

287,251

286,876

286,644

?87,488

287,071

286,686

?85,454

192

190

190

190

65,756

65,530

55,417

65,955

65,720

65,494

65,381

38

36

36

36

57,910

57,721

57,543

57,465

57,875

57,689

57,511

57,433

34

32

32

32

4,214,533

4,187,819

4,179,520

4,171,166

4,133,293

4,108,314

4,101 #553

86,684

81,240

78,505

77,967

3,600,744

3,566,858

3,545,737

3,539,971

3,531,362

3,501,664

3,482,675

3,477,253

69,382

65,194

63,082

62,718

6,788

2,575

2,121

20,054

5,871

2,305

1,909

4,269

917

270

212

17,493

4,535

1,593

1,327

4,345

3,909

1,428

1,197

3,148

626

165

130

19,457

14,249

13,282

22,937

15,889

11,660

10,640

4,819

3,568

2,569

2,442

20,040

13,517

9,527

8,916

16,488

10,957

7,730

7,218

3,552

2,560

1,797

1,698

56,355

51,556

50,726

49,758

44,777

40,546

39,952

12,147

11,638

10,910

10,774

45,676

213,563

208,537

208,425

191,971

188,3C6

184,548

183,547

25,465

26,257

24,989

24,879

163,131

784,053

780,788

779,220

761,527

758,624

755,441

753,931

25,510

25,429

25,347

25,289

621,069

1,613,724

1,610,629

1,608,962

1,604,541

1,601.753

1,598,885

1,597,044

12,002

11971

11,944

11,918

1,372,850

1,137,567

1,135,984

1,134,894

1,136,833

1,135,365

1,133,786

1,132,689

2,210

2,202

2,198

2,195

1,014,875

Births . . . . . . . . . . . .

lay . . . . . . . . . . . . . . .

7days . . . . . . . . . . . . . . .

28days . . . . . . . . . . . . . .

WHITE

All births

Births . . . . . . . . . . . .

lay. . . . . . . . . . . . . . .

7days . . . . . . . . . . . . . . .

28days . . . . . . . . . . . . . .

Single births

Births . . . . . . . . . . . .

Idly . . . . . . . . . . . . . . .

7days . . . . . . . . . . . . . . .

28days . . . . . . . . . . . . . .

Plural births

Sixths . . . . . . . . . . . .

lay . . . . . . . . . . . . . . .

7davs . . . . . . . . . . . . . . .

28deys . . . . . . . . . . . . . .

159,853

156,508

155,790

142,956

139,845

136,720

136,069

20,175

518,617

615,939

514,836

)00,055

597,654

595,035

S93,968

21,024

20,963

20,904

20,868

1,370,583

1,36B,230

1,365,834

1,362,723

1,360,481

1,358,149

1,356,773

10,127

10,102

10,081

10,061

1,013,652

1,012,379

1,011,547

1,012,995

I,011,790

[,010,511

1,009,680

1,880

1,872

1,888

1,687

41,109

37,142

36,612

36,426

32,26B

28,905

28,461

9,250

8,841

8,237

8,151

20.008

19;788

19,721

79
Table 15. Births andsuwivors atsalacti ~eintewals upto28days, by Mrthwight, color, andpluraliW: United Stetes, 19601 ive-birth cohort-Con.

Color, plurality,

and age

ALLOTHER

All births

Births . . . . . . . . . . . .

Idly . . . . . . . . . . . . . . .

7days . . . . . . . . . . . . . . .

28days . . . . . . . . . . . . . .

Single births

Births . . . . . . . . . . . .

I day . . . . . . . . . . . . . . .

7days . . . . . . . . . . . . . . .

28days . . . . . . . . . . . . . .

Plural births

Sixths . . . . . . . . . . .

x

I day . . . . . . . . . . . . . . .

7days . . . . . . . . . . . . . . .

28days . . . . . . . . . . . . . .

Total

657,106

847,675

642,082

639,=9

639,804

631,629

626,639

624,300

17,302

16,046

15,443

15,249

I

1,000 1,001

grams to

or 1,500

less grams

6,B30

2,253

982

794

5,709

1,962

B77

712

1,121

291

105

82

7,716

5,840

4,722

4,366

6,449

4,932

3,930

3,622

1,267

1,008

792

744

Birth weight

1,501

to

2,000

grams

2,001

to

2,500

grams

2,501

3:&

grams

3,001

to

3,500

grams

Numberofbirths and survivors

16,229

15,246

14,414

14,114

13,332

12,449

11,741

11,491

2,897

2,797

2,673

2,623

54,305

63,710

53,029

52,636

49,015

48,461

47,828

47,478

5,290

5,249

5,201

5,1 5s

165,948

165,436

184,s49

164,3B4

161,462

160,970

160,406

159,963

4,486

4,466

4,443

4,421

243,693

243,141

242,589

242,128

241,618

241,272

240,736

240,271

1,875

1,869

1,s63

1,857

3,501

to

4,000

grams

124,166

123,906

123,605

123,347

123,83B

123,575

123,276

123,019

330

330

330

326

I

4,001 4,501

to grams

4,500 or

grams more

30,133

30,008

29,895

29,B2B

30,101

29S77

28,B63

29,796

32

32

32

32

B,084

8,035

7,967

7,952

8,0B0

6,031

7,983

7,948

4

4

4

4

80
Table 16. Probatilitiea ofdying perl OO,OOOaumivors,by bi~hweight, color, plumliW, andage at death: United Statea, 1960{ ive-birth cohort

Color, plurality,

and age at death

TOTAL

All births

l-6days . . . . . . . . . . . . . .

7.27days . . . . . . . . . . . . . .

28days-ll months . . . . . . . . .

Sirmle births

1.6days . . . . . . . . . . . . . .

7-27deys . . . . . . . . . . . . . .

28daya-ll months . . . . . . . . .

Plural births

l-8daya . . . . . . . . . . . . . .

7-27days . . . . . . . . . . . . . .,

28days-ll months . . . . . . . . .

WHITE

All births

‘1-6days . . . . . . . . . . . . . . .

7-27days . . . . . . . . . . . . . . .

28days-ll months . . . . . . . . . .

Single births

1.8days . . . . . . . . . . . . . . .

7-27days . . . . . . . . . . . . . . .

28days.ll months . . . . . . . . . .

Plural births

1.6days . . . . . . . . . . . . . . .

7-27days . . . . . . . . . . . . . . .

28daya-llmonths . . . . . . . . . .

ALLOTHER

All births

I-Odays . . . . . . . . . . . . . . .

7-27days, . . . . . . . . . . . . . .

28deys-ll months . . . . . . . . . ,

Single births

l-8days . . . . . . . . . . . . . . .

7-27days . . . . . . . . . . . . . . .

28days-ll months , . . . . , . . . .

Plural births

l-6days . . . . . . . . . . . . . . .

7-27days . . . . . . . . . . . . . . .

28davs-ll months . . . . . . . . . .

6irthweight

Total 1,000 7,00? 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams to to to to to to to grams

1,500 2,000 2,500 3,000 3,500 4,000

1::s

4,500 or

grams grams grams grams grams grams grams more

Probability of dying per 100,000 survivors

633.S

1982

686.9

580.1

188.9

667.4

3,366.6

685.3

1,712.3

592. ‘3

162.6

538.0

542.3

165.7

525.5

3,270.2

545.5

1,232.5

863.6

394.5

1,510.8

790.0

373.3

1,457.6

3,757.9

I ,256.2

1,685.5

62,065.4

17,631.1

7,402.2

60,739.2

17,180.0

6,914.6

70,556.2

21,481.5

11,792.5

64,873.2

16,696.1

6,782.2

33,466.9

16,176.5

6,088.6

73,642.2

21,212.1

13,076.9

56,413.7

19,144.6

8,438.3

55,300.7

18,814.1

8,286.5

}3,91 7.5

?1,904.8

9,756.1

26,766.7

6,786.4

6,654.3

26,615.9

7,032.6

6,507.4

27,436.3

6,677.9

6,306.3

29,578.4

6,413.4

4,620.9

28,451.5

6,623.5

4,447.2

29,804.7

5,509.2

6,359.2

20,505.1

7,539.2

7,764.5

?0,316.3

7,837.2

7,620.1

N ,428.6

6,060.6

8,467.7

8,515.7

1,609.9

3,173.9

9,103.9

1,707.4

3,231.4

6,255.4

1,246.6

2,960.8

9,650.0

1,427.0

2,559.3

10,422.1

1,536.1

2,642.2

6,831,8

1,044.1

2,269.7

5,457.2

2,081.3

4,768.3

5,667.2

2,12?3.3

4,690.6

4,433.3

1,870.6

5,108.7

1,885.2

630.2

1,774.7

1,995.7

542.4

1,786.5

1,061.1

440.2

1,688.2

2,092.5

458.8

1,376.9

2,234.6

476.2

1,407.4

1,099.6

338.6

1,166.3

1,267.9

741.1

Z,952.4

1,306.2

731.8

?,872.9

914.5

826.6

),683.6

416.4

200.8

915.4

419.6

199.9

908.7

322.5

228.8

1,115.1

432.9

179.1

732.4

438.2

179.3

729.2

281.4

172.2

824.2

354.8

282.1

I,599.9

350.4

276.2

1,576.4

515.0

495.2

!,488.1

179.4

115.9

548.1

179.1

115.1

545.4

225.5

217.7

914.6

171.7

102.0

449.1

171.4

101.3

447.8

207.9

198.4

626.2

222.9

194.1

1,107.3

222.2

193.2

1,096.7

321.0

322.1

2,477.1

139.2

96.0

434.8

139.1

95.9

433.7

181.7

136.5

1,002.3

126.6

82.2

359.6

126.4

82.2

359.1

213.7

53.5

642.7

242.1

208.7

1,050.7

242.6

207.7

1,045.4

606.1

3,048.8

157.3

94A

412.7

157.4

94.5

411.7

1,801.8

134.0

60.9

341.5

134.1

80.9

340.7

1,578.9

379.9

224.1

1,096.3

380.3

224.4

1,094.1

3,125.0

343.7

172.4

457.1

343.9

172.5

457.3

308.4

135.6

321.4

308.6

135.6

355.2

597,4

438.2

1,194.7

577.6

438.4

1,195.3

I 81
Table 17. Deaths underl year of age, by birth weight, ageatdeath, color, and period of gestation: Unitad States, 19601 ive-birth

cohort

t,

Birth weight

1,000

grams

or

less

1,001

to

1,500

grams

Color and period

of gestation

1,501 2,001

to to

2,000 2,500

grams grams

2,501

to

3,000

grams

3,001

to

3,500

grams

3,501

to

4,000

grams

4,001

to

4,500

grams

4,501

grams

or

Total

1 1 I I I I I

Total

All periods of gestation. .

Under 20weeks . . . . . . . .

20-27 weeks . . . . . . . . . .

28-31 weeks . . . . . . . . . .

32-35 weeks . . . . . . . . . .

36waeks . . . . . . . . . . . .

37-39 weeks . . . . . . . . . .

40 weeks and over . . . . . . .

Not stated . . . . . . . . . . .

White

All periods of gestation . .

Under 20weeks . . . . . . . .

20-27 weeks . . . . . . . . . .

28-31 weeks . . . . . . . . . .

32-35 weeks . . . . . . . . . .

36weeks . . . . . . . . . . . .

37-39 weeks . . . . . . . . . .

40 weeks and over . . . . . . .

Not stated . . . . . . . . . . .

All other

All periods of gestation . .

Undar20weeks . . . . . . . .

20-27 weeks . . . . . . . . . .

28-31 weeks . . . . . . . . . .

32-35 weeks . . . . . . . . . .

36weeks . . . . . . . . . . . .

37-39 weeks . . . . . . . . . .

40 weeks and over . . . . . . .

Notstatad . . . . . . . . . . .

Number of deaths under 1 year of age

107,038 22,359 15,225 12,789 12,709 14,950 16,400 9,083 2,647 876

1,078

19,685

14,198

11,621

5,339

9,723

36,905

8,489

79,819

677

14,686

10,707

9,331

3,908

7,833

26,173

6,504

27,219

401

4,999

3,491

2,290

1,431

1,890

10,732

1,985

1,017

15,037

3,287

620

104

60

249

1,985

16,256

642

11,136

2,370

400

64

42

154

1,448

6,103

375

3,901

917

220

40

18

95

537

38

3,885

6,455

2,464

382

276

451

1,274

11,536

22

2,991

4,894

1,914

267

200

283

965

3,689

16

894

1,561

550

115

76

168

309

13

623

3,489

4,448

1,080

898

1,196

1,042

10,001

7

464

2,718

3,632

805

728

827

820

2,788

6

159

771

816

275

170

369

222

1

88

785

3,008

1,737

2,127

3,886

1,067

9,486

1

66

587

2,501

1,285

1,665

2,538

833

3,223

22

198

507

442

462

1,358

234

2

14

46

254

554

2,407

12,043

1,080

12,154

2

8

36

201

381

1,997

8,682

847

4,246

6

10

53

173

410

3,361

233

6

9

10

60

275

858

7,186

679

6,966

2

3

5

46

164

709

5,501

536

2,117

4

6

5

14

111

149

1,685

143

1

4

2

8

37

63

703

58

649

1

1

6

23

55

514

49

227

4

1

2

14

8

189

9

24

118

741

1,077

2,810

9,065

1,115

10,756

17

90

614

854

2,250

6,071

860

4,194

7

28

127

223

560

2,884

255

1

6

18

93

224

2,116

189

2,015

1

6

17

55

187

1,603

146

632

1

38

37

513

43

82
Table 17. Deaths under 1 year of age, by birth weight, age at death, color, and period of gestation: United States, 1960 live-birth

cohort—Con.

Birth weight

1,501

to

2,000

grams

2,001 2,501 3,001

to to

2,500 3:;0 3,500

grams grams grams

3,501

to

4,000

grams

4,001 4,501

to grams

4,500 or

grams more

Color and pariod

of gestation

1,000

grams

or

less

1,001

to

1,500

grams

Total

Total Number of deaths undar 28 days

Allperiods of gestation. . 78,33( 22,202 14,474 11,179 9,010 7,817 7,581 4,149 1,341 577

Under 20weeks . . . . , . . .

20-27 weeks . . . . . . . . . .

28-31 weeks . . . . . . . . . .

32-35 walks . . . . . . . . . .

36weaks, . . . . . . . . . . .

37-39 weeks . . . . . . . . . .

40 weeks and over , . . . . . .

Notstated . . . . . . . . . . .

1,07f

19,47s

13,38;

10,131

3,747

5,814

18,254

6,44:

60,773

676

14,585

10,277

8,393

2,970

4,898

13,910

5,064

17,557

400

4,894

3,110

1,738

777

916

4,344

1,378

1,016

14,985

3,238

607

102

58

247

1,949

16,166

642

11,105

2,343

396

63

41

153

1,423

6,036

374

3,880

895

211

39

17

84

526

3a

3,793

6,144

2,291

346

249

397

1,216

11,124

22

2,949

4,726

1,802

243

189

262

931

3,350

16

844

1,418

489

103

60

135

285

13

585

3,189

3,918

892

750

920

912

9,064

7

442

2,564

3,286

700

625

684

736

2,115

6

143

625

622

192

125

226

176

1

80

671

2,509

1,230

1,448

2,315

756

7,341

1

64

532

2,190

1,000

1,202

1,711

641

1,669

16

139

319

230

246

604

115

1

10

34

175

298

1,181

5,346

536

6,016

1

6

27

152

231

1,016

4,150

433

1,565

4

7

23

67

165

1,196

103

6

3

8

40

133

423

3,223

313

3,328

2

2

4

33

91

1

4

2

8

25

40

454

43

445

1

1

6

14

37

347

39

132

4

1

2

11

3

107

4

18

95

569

676

1,545

4,284

630

6,253

16

74

505

600

1,330

3,211

517

1,564

2

21

64

76

215

1,073

113

1

6

14

45

120

1,068

87

1,036

1

6

13

28

98

821

69

305

1

17

22

247

18

White

All periods of gestation . .

Under 20weeks . . . . . . . .

20-27 weeks . . . . . . . . . .

28-31 weeks . . . . . . . . . .

32-35 weeks . . . . . . . . . .

36weeks . . . . . . . . . . . .

37-39 weaks . ...,.....

40weeks and over . . . . . . .

Not stated . . . . . . . . . . .

360

2,561

275

821

4

1

4

7

42

63

662

38

All othar

All periods of gestation . .

Under 20weeks . . . . . . . .

20.27 weeks . .,,.,....

28.31 weeks,,,,,..,,.

32-35 weeks,.,...,,..

36weeks . . . . . . . . . . . .

37.39 weeks . ...,.....

40weeksand ovar , , , , , , ,

Notstated . . . . . . . . . . .

83
Tabla 17. Daaths under 1 year of age, by birth waight, age at death, color, and period of gestation: United States, 1960 Iive-birth

Color and period

of gestation

Total

AH periods of gestation . .

Under 20weeks . . . . . . . .

20-27 weeks . . . . . . . . . .

28-31 weeks, . . . . . . . . .

32-35 weaks . . . . . . . . . .

36weeks . . . . . . . . . . . .

37-39 weeks . . . . . . . . . .

40 weeks and over . . . . . . .

Not stated . . . . . . . . . . .

White

All periods of gestation . .

Under 20weeks . . . . . . . .

20-27 weeks . . . . . . . . . .

28-31 weeks . . . . . . . . . .

32-35 weeks . . . . . . . . . .

36weeks . . . . . . . . . . . .

37-39 weeks . . . . . . . . . .

40 weeks and over . . . . . . .

Notstated . . . . . . . . . . .

All other

All periods of gestation . .

Under 20weeks . . . . . . . .

20-27 weeks . . . . . . . . . .

28-31 weaks . . . . . . . . . .

32-35 weeks . . . . . . . . . .

36weeks . . . . . . . . . . . .

37-39 weeks . . . . . . . . . .

40 weeks and over . . . . . . .

Notstated . . . . . . . . . . .

cohort-Con.

Total

28,708

2

206

811

1,490

1,592

3,908

18,651

2,047

19,046

1

101

430

938

938

2,935

12,263

1,440

9,662

1

105

381

552

654

974

6,388

607

_L1,000 1,001

grams to

or 1,500

less grams

157

1

52

49

13

2

2

2

36

90

31

27

4

1

1

1

25

67

1

21

22

9

1

1

1

11

Birth weight

m

3,001

to

3,500

grams

Number of deaths at 28 days-11 months

751

92

311

173

36

27

54

58

412

42

168

112

24

11

21

34

339

50

143

61

12

16

33

24

3,501 4,001

to to

4,000 4,500

grams grams

1,610

38

300

530

188

148

276

130

937

22

154

336

105

103

133

84

673

16

146

194

83

45

143

46

3,699

8

114

499

507

679

1,581

311

2,145

2

55

311

285

463

827

192

1,554

6

59

188

212

216

754

119

7,133

6

23

172

401

1,265

4,781

485

4,503

1

16

109

254

920

2,860

343

2,630

5

7

63

147

345

1,921

142

8,819

1

4

12

79

256

1,226

6,687

544

6,138

1

2

9

49

150

981

4,532

414

2,681

2

3

30

106

245

2,165

130

4,934

6

2

20

142

435

3,963

366

3,638

1

1

13

73

349

2,940

261

1,296

5

1

7

69

86

1,023

105

1,306

4

48

104

1,048

102

979

4

27

89

782

77

327

21

15

266

25

4,501

grams

or

more

299

12

23

249

15

204

9

18

167

10

95

3

5

82

5

84
Table 18. Infant mortality rates per 100,000 live births, by birth weight, age at death, color, and period of gestation: United States, 1960 live-birth

Age at death, color,

and period of gestation

UNDER 1 YEAR

Total —

Allperiods of gestation . .

Under 20weaks . , . . . . . . .

20-27 walks . . . . . . . . . . .

28-31 weeks . . . . . . . . . . .

32.35 weeks . . . . . . . . . . .

36weeks . . . . . . . . . . . .

37.39 weeks . . . . . . . . . . .

40weeksand over. . . . . , . .

Notstated . . . . . . . . . . . .

White

All periods of gestation . .

Under 20weeks . . . . . . . . .

20-27 weeks . . . . . . . . . . .

28-31 weeks . . . . . . . . . . .

32-35 weeks . . . . . . . . . . .

36weoks . . . . . . . . . . . .

37.39 weeks . . . . . . . . . . .

40weeksand over. . . . . . . .

Notstated, . . . . . . . . . . .

All other

All periods of gestation . .

Under 20weeks . . . . . . . . .

20-27 weeks . . . . . . . . . . .

28-31 weeks . . . . . . . . . . .

32.35 weeks . . . . . . . . . . .

36weeks . . . . . . . . . . . .

37-39 weeks, . . . . . . . . . .

40weeksand over . . . . . . . .

Notstated . . . . . . . . . . . .

Total

2,513.9

65,096.8

81,497,9

41,502,5

12,398.9

4,033.4

1,518.9

1,195,1

3,483.1

2,216.7

54,108.8

84,247.4

44,423.7

13,079.3

3,927,3

1,426.3

999.0

2,979.5

4,142.3

66,833.3

74,367.7

34,537.0

10,230.5

4,354.6

2,078.8

2,292.7

7,808.4

CO hort

8irth weight

1,000 1,001 1,501 2,001 2,501 3,001 3,501 4,001 4,501

grams grams

or 1;00 2;00 2;00 3:00 3:00 4;00 4,:00 or

less grams grams grams grams grams grams grams more

Rate per 100,000 live births

91,925.3

84,820.7

93,905.0

90,426.4

79,589.2

74,820.1

60,000.0

67,479.7

95,021.5

92,928.6

83,921.6

94,436.9

92,866.3

79,365.1

90,140.8

66,666.7

53,636.4

96,276.6

89,355.8

86,405.5

92,418.9

64,672.2

60,000.0

58,623.5

48,648.6

74,803.1

91,794.9

54,853.0

64,265.7

71,944.4

55,713.8

42,896.9

36,625.1

35,937.5

38,646.1

64,408.5

57,564.9

64,705.9

75,875.2

56,426.8

45,182.6

37,500.0

36,036.0

41,495.6

64,290.5

47,809.7

44,444.4

61,316.9

48,629.3

36,520.6

34,743.2

35,680.8

34,639.2

64,779.9

20,659.1

43,333.3

44,531.6

31,695.1

19,220.5

14,031.4

13,429.0

15,374.7

25,030.0

21,895.5

35,000.0

50,216.5

34,748.1

20,709.3

14,359.6

13,962.4

15,785.5

24,751.0

17,179.1

60,000.0

33,473.7

24,199.6

14,561.0

13,151.6

11,541.1

14,527.6

26,117.6

5,844.9

3,846.2

19,426.0

17,776.3

9,254.0

5,635.0

4,055.1

4,664.6

8,061,3

5,815.0

7,142.9

25,581.4

19,443.5

9,825.2

5,611.4

3,959.6

4,353.9

7,596.9

5,935.0

11,282.1

14,173.2

7,191.5

5,705.4

4,441.5

5,382.3

10,303.8

1,899.5

6,521.7

6,668.5

4,418.9

3,014.0

1,593.5

1,776.5

2,437.3

1,731.8

9,714.3

6,474.6

4,805.9

3,068.9

1,539.2

1,543.3

2,170.0

2,527.3

3,626.9

4,301.1

3,180.6

2,821.0

1,856.3

2,561.4

4,169.4

1,014.5

1,481.5

4,268.3

3,706.7

2,522.6

1,725.2

947.4

982.0

1,170.8

885.3

2,272.7

3,980.1

4,374.2

2,746.7

1,594.7

906.2

837.2

1,016.1

1,742.4

4,724.4

2,392.3

1,926.6

2,104.4

1,217.1

1,774.6

2,574.6

797.4

6,668.7

5,806.5

2,083.3

1,580.2

1,527.8

708.4

770.8

1,075.7

686.4

2,898.6

2,727.3

1,416.4

1,634.7

1,210.8

651.5

662.1

918.2

1,704.9

19,047.6

13,333.3

3,937.0

1,424.2

2,491.6

1,212.2

1,660.1

3,013.1

832.9

4,545.5

5,309.7

2,393.6

1,764.0

914.1

764.8

1,076.7

700.4

4,545.5

6,896.6

2,921.0

1,445.1

836.5

656.1

885.1

2,097.4

588.2

2,592.1

1,720.1

2,030.8

4,068.1

1,327.4

11,111.1

25,000.0

11,111.1

4,733.7

2,390.2

1,543.0

1,243.0

1,614.2

1,120.7

14,285.7

12,500.0

5,128.2

2,371.1

1,532.0

1,030.2

1,477.2

2,808.0

50,000.0

10,000.0

3,846.2

2,422.1

1,622.7

2,835.7

3,260.9

85
Table 18. Infant mortality ratas par 100,000 live births, by birth weight, age at daath, color, and period of gastation: Unitad States, 1960 live-birth

cohort—Ccm.

II Birth weight

Aga at death, color,

and period of gestation

1,000 1,001

grams to

or 1,500

less grams

1,501 2,001

to to

2,000 2,500

grams grams

2,501

to

3,000

grams

3,001

to

3,500

grams

3,501

to

4,000

grams

4,001 4,501

to grams

4,500 or

grams more

Total

UNDER 2B DAYS

Total Rate par 100,000 live births

All pariods of gestation . . 1,839.7 91,279.9 52,147.3 18,058.3 4,143.7 993.2 469.0 364.3 421.9 874.3

Under 20weeks . . . . . . . . .

20-27 weeks . . . . . . . . . . .

28-31 weeks . . . . . . . . . . .

32-35 weaks . . . . . . . . . . .

36weeks . . . . . . . . . . . .

37-39 weeks . . . . . . . . . . .

40weeksand over. . . . . . . .

Notstated . . . . . . . . . . . .

64,975.8

80,645.0

39,131.6

10,809.2

2,630.7

908.3

591.1

2,643.2

1,687.8

64,015.2

83,668.0

42,639.6

11,784.5

2,984.7

891.8

531.0

2,319.8

2,671.9

66,666,7

72,805.7

30,767.7

7,764.5

2,364.4

1,007.5

928,0

5,419.2

84,737.3

93,560.2

89,078.4

77,920.4

73,381.3

58,000.0

66,937.7

93,298.2

92,414.1

83,921.6

94,174.0

91,810.3

78,571.4

88,732.4

65,079.4

63,223.1

94,614.4

6B,374.8

86,175.1

91,921.3

82,640.6

76,727.3

57,352.9

45,945.9

74,015.7

B9,914.5

54,265.7

70,240.7

53,029.5

39,885.1

33,173.5

32,421.9

34,016.9

61,476.2

55,509.0

84,705.9

74,B08.7

56,423.1

42,520.0

34,129.2

34,054.1

38,416.4

62,025,3

43,416.3

44,444.4

57,867.5

44,174.5

32,470.1

31,117.6

28,169.0

27,835.0

59,748.4

43,333.3

41,815.6

2B,869.8

16,930.3

11,588.9

11,215.8

11,626.7

21,907.3

19,844.1

35,000.0

47,B35.5

32,779.3

18,793.5

12,466.6

11,987.0

13,246.8

22,215.5

13,032.2

60,000.0

30,105.3

19,617.1

11,099.2

9,182.2

8,486.1

8,897.6

20,705.9

3,846.2

17,550.0

15,194.7

7,718.8

3,880.3

2,760.6

2,771.7

5,711.7

4,500.1

7,142.9

24,606.2

17,621.7

8,603.4

4,333.1

2,858.5

2,935.2

5,845.9

3,073.4

6,205.1

9,949.9

4,524.8

2,968.9

2,364,9

2,393,9

5,083.8

740.7

3,048.6

2,738.7

1,738.0

928.0

464.9

435.9

561.1

438.2

1,136.4

2,985.1

3,280.7

2,077.1

988.9

461.1

400.2

520.5

642.2

3,149.6

1,674.6

838.1

815.0

469.6

631.6

1,138.1

6,666.7

1,935.5

1,666.7

1,053.5

736.9

348.2

345.7

495.9

327.9

2,898.6

1,818.2

1,133.1

1,172.7

671.6

330.8

308.3

471.1

661.2

19,047.6

2,222.2

3,149.6

712.1

942.8

512.5

652,2

800.7

11,111.1

25,000.0

11,111.1

4,733.7

1,615.0

979,7

802.7

1,196.8

768.4

14,28!5.7

12,600.0

5,128,2

1,443.3

1,030.6

696.5

1,175.8

1,632,9

50,000.0

10,000.0

3,846.2

1,903.1

606.5

1,605,4

1,449.3

4,881.3

5,545.8

3,393.2

1,891.6

876.1

839.5

1,377,1

1,006.8

9,142.9

6,968.0

3,952.7

2,156.1

909.8

816.2

1,304.5

942.5

1,036.3

3,225.8

1,602.8

961.4

712.7

918.0

1,847.6

4,545.5

5,308.7

1,861.7

853.6

489.7

396.2

485.6

360.1

4,545.5

6,896.6

2,233.7

735.7

438.4

336.0

418.3

1,012,2

586.2

1,159.6

1,022,6

977.8

1,702.9

White

All periods of gestation . .

Under 20waeks . . . . . . . . .

20-27 weeks . . . . . . . . . . .

26-31 weeks . . . . . . . . . . .

32-35 weeks . . . . . . . . . . .

36weeks . . . . . . . . . . . .

37-39 weeks . . . . . . . . . . .

40weeksand over . . . . . . . .

Not stated . . . . . . . . . . . .

All other

All periods of gestation . .

Under 20weeks . . . . . . . . .

20-27 weaks . . . . . . . . . . .

28-31 weeks . . . . . . . . . . .

32-35 weeks . . . . . . . . . . .

36weeks . . . . . . . . . . . .

37-39 weeks . . . . . . . . . . .

40weaksandovar , . . . . . . .

Notstated . . . . . . . . . . . .

.

86
m

Table 18. Infant mortality ratas per 100,000 live births, by birth weight, age at death, color, and period of gestation: United States, 1960 live-birth

Age at death, color,

and period of gastation

28 DAYS-11 MONTHS

Total

.

All periods of gestation . .

Under 20weeks . , . . . . . . .

20-27 weeks . . . . . . . . . . .

28-31 weeks . . . . . . . . . . .

32.35 weeks . . . . . . . . . . .

36weeks . . . . . . . . . . . .

37-39 weeks . . . . . . . . . . .

40weeksand over. . . . . . . .

Not stated, . . . . . . . . . . .

White

All periods of gestation . .

Under 20weeks . . , . . . . . .

20.27 weeks . . . . . . . . . . .

28-31 weeks . . . . . . . . . . .

32-35 weeks . . . . . . . . . . .

36weeks . . . . . . . . . . . .

37-39 weeks........,..

40weeks and over. . . . . . . .

Not stated . . . . . . . . . . . .

All other

All periods of gestation . .

Under 20weeks . . . . . . . . .

20-27 weeks, . . . . . . . . . .

28-31 weeks . . . . . . . . . . .

32-35 weeks . . . . . . . . . . .

36weeks . . . . . . . . . . . .

37-39 weeks . . . . . . . . . . .

40weeks and over . . . . . . . .

Not stated . . . . . . . . . . . .

cohort—Con.

Total

674.2

120.8

852.9

2,370.7

1,589.7

1,202.7

610.7

604.0

839,9

528.9

94,7

579.4

1,7s4.1

1,314.8

942.6

534.4

468.1

659.7

1,470.4

166.7

1,562.0

3,769.3

2,466.0

1,990.1

1,071.3

1,364.7

2,387.1

_LJ 1,000 1,001 1,501

grems to to

or 1,500 2,000

less grams grams

S45.5

83.4

324.7

1,348.0

1,666.8

1,438.8

2,000.0

542.0

1,723.3

514.5

262.9

1,058.0

793.7

1,408.5

1,587.3

413.2

1,662.2

981.0

230.4

497.5

2,031.4

3,272.7

1,470.6

2,702.7

7s7.4

1,880.3

2,705.7

1,703.7

2,664.3

3,011.8

3,461.6

3,515.6

4,627.2

2,932.3

2,055.9

1,065.4

2,005.7

2,642.8

3,370.8

1,982.0

3,079.2

2,265.2

4,393.5

3,429.4

4,454.8

4,050.5

3,625.4

7,511.7

6,804.1

5,031.4

8irth weight

m

l-late per 100,000 live births

2,600.8

2,716.2

2,725,3

2,290.2

2,442.5

2,213.2

3,548.0

3,122.7

2,051.4

2,381.0

1,968.8

1,915.8

1,873.0

1,975.5

2,538.7

2,535.5

4,146.9

3,368.4

4,582.5

3,461.8

3,969.4

3,065.0

5,629.9

6,411.8

1,701.2

1,766.0

2,581.5

1,535.1

1,S44.8

1,294.5

1,892.9

2,349.7

1,314.9

775.2

1,821.8

1,221.8

1,27S.3

1,101.1

1,418.7

1,751.0

2,861.6

3,076.9

4,223.3

2,666.7

2,736.5

2,076.5

2,988.4

5,240.0

906.3

1,630.4

1,342.7

1,025.7

1,122.2

717.3

936.9

1,060.2

725.0

571.4

1,506.6

853.2

912.7

629.4

727.0

865.5

1,584.8

2,590.7

1,075.3

1,577.8

1,859.6

1,143.6

1,843.5

!,321 .8

545.5

740.7

1,219.5

967.0

7S4.6

797.2

482.6

546.1

589.8

447.1

1,13s.4

995.0

1,093.6

669.6

627.8

445.2

437,0

497.6

I,1OO.2

1,574.8

717.7

I,090.5

1,289.4

727.3

1,143.1

1,436.5

433.2

3,871.0

416.7

526.7

788.9

359.2

425.1

579.8

358.5

909.1

283.3

462.0

538.9

320.7

363.9

447.1

1,043.7

11,111.1

787.4

712.1

1,548.8

699.6

1,007.9

2,212.4

410.9

531.9

910.5

424.4

388.7

581.1

340.3

687.3

708.4

398.1

320.1

468.8

1,086.2

1,432.5

697.4

I,053.0

?,365.2

4,601

grams

or

more

453.1

775.2

563.3

440.3

417.6

352.3

927.8

501.4

334.7

301.5

1,175.2

519.0

1,014.2

1,230.3

1,811.6

87
Table 19. Births and survivors to 28 days, by birth weight, color, and period of gestation: United States, 1960 live-birth cohort

Birth weight

Color and period

of gestation

1,000

grams

or

lees

2,501 3,001 3,501 4,001

to to to to

3,000 3,500 4,000 4,500

grams grams grams grams

4,501

grems

or

more

Total

TOTAL All live births

Allperiods of gestation . . . 4,257,850 24,323 27,756

_

70

6,400

11,586

5,744

1,043

768

1,167

1,978

13j282

32

1,607

5,442

3,453

897

519

770

762

?0,040

61,805

—

30

1,399

11,008

23,142

7,697

6,687

7,779

4,163

50,726

17

814

7,819

19,224

8,805

5,937

6,859

3,251

217,436 787,037

—

85

368

1,713

16,769

35,733

176,346

510,276

45,747

1,616,543

135

328

1,241

10,069

32,113

254,054

1,226362

92,241

1,139,043 317,813 65,984

—

Under 20weeks . . . . . . . . . .

20-27 weeks . . . . . . . . . . . .

28-31 weeks . . . . . . . . . . . .

32-35 walks . . . . . . . . . . . .

36weaks . . . . . . . . . . . . .

37-39 walks . . . . . . . . . . . .

40weeksand over . . . . . . . . .

Notstated . . . . .. l......

1,656

24,154

34,210

93,726

132,370

640,114

3,087,898

243,722

4,179,520

560

4,6;5

20,823

83,595

128,623

634,300

3,069,644

237,280

3,600,744

1,199

16,013

3,635

779

139

100

369

2,069

2,121

183

1,028

397

172

37

42

122

140

17,493

26

453

4,416

32,505

30,825

52,452

83,523

13,236

90

155

480

3,797

18,000

121,119

932,280

63,122

1,134,684

64

152

472

3,757

17,867

120,696

929,057

62,808

1,014,875

12

22

113

752

5,272

24,505

269,564

17,553

316,472

12

21

107

738

6,227

24,385

268,516

17,466

287,680

9

16

18

169

1,548

4,063

66,558

3,593

55,417

8

12

16

161

1,623

4,L?43

56,104

3,560

57,910

Survivors to 28 days

All periods of gestation . . . 208,426

25

373

3,745

29,996

29,595

51,004

81,206

12,480

779,220

85

350

1,618

16,200

35,057

174,801

505,882

45,117

1,608,962

134

318

1,207

9,684

31,815

252,873

1,221,016

91,705

f ,372,850

Under 20weeks . . . . . . . . . .

20-27 weeks . . . . . . . . . . . .

28-31 weeks . . . . . . . . . . . .

3235weeks . . . . . . . . . . . .

36weaks . . . . . . . . . . . . .

37-39 weeks . . . . . . . . . . . .

40weeksand over . . . . . . . . .

Notstatad . . . . . . . . . . . . .

All live births

All periods of gestation . . . 45,676 163,131 621,069

Under 20weeks . . . . . . . . . .

20-27 weeks, . . . . . . . . . . .

28-31 weeks . . . . . . . . . . . .

32-35 weeks . . . . . . . . . . . .

36weeks . . . . . . . . . . . . .

37-39 weeks . . . . . . . . . . . .

40weeksandover . . . . . . . . .

Notstatad . . . . . . . . . . . . .

1,056

17,432

24,102

71,342

99,508

549,198

2,619,812

218,284

765

11,792

2,552

504

71

63

242

1,504

34

3,942

8,376

4,238

772

555

662

1,501

20

924

7,822

17,538

5,606

5,214

5,239

3,313

14

266

3,019

25,455

23,078

42,050

58,292

10,965

49

175

1,062

12,776

27,B26

146,179

393,389

38,631

88

201

823

7,318

23,892

220,366

1,036,871

83,191

69

110

353

2,814

13,545

108,827

830,781

58,376

10

22

87

582

3,806

22,354

244,323

16,496

7

6

8

117

970

3,690

!9,893

3,317

88
Table 19. Births and suwivors to 28 days, by birth waight, color, and period of gestation: United States, 1860 live-birth cohort-Con.

II 8irth waight

1,000 1,001

grams to

or 1,500

less grams

Color end period

of gastation

1,501

to

2,000

grams

2,001 2,501 38001 3,501 4,001 4,501

to to to to to grams

2,500 3,000 3,500 4,000 4,500 or

grams grams grams grams grams more

Total

1 I I I 1

WHITE-Con,

Survivo~ to 28 days

Allpwiods of gestation . . 3,538,971

3S0

2,647

13,825

62,849

86,538

544,300

2,605,802

213,230

657,106

1,327

123

687

209

108

8

22

89

81

6,830

8,916

12

993

3,650

2,436

469

366

420

570

@

7,716

36,612

13

482

5,258

14,242

4906

4,588

4,545

2,577

155,790

13

184

2,487

23,265

22,078

40,848

56,561

10,324

614,636

49

159

988

12,271

27,228

144,848

390,178

39,114

1,366,634

87

196

796

7,166

23,661

219,350

1,032,821

82,758

243,693

1,011,547

67

108

349

2,781

13,454

108,467

828,220

68,101

124,168

286,644

10

21

81

569

3,778

22,256

243,502

16,427

30,133

57,465

6

8

7

111

956

3,553

49,546

3,278

8,084

Undar20weaks ,. . . . . . . . ,

20-27 weeks . . . . . . . . . . . .

28-31 weeks, . . . . . . . . . . .

32-35 walks . . . . . . . . . . .

36waaks . . . . . . . . . . . . .

37-39 walks . . . . . . . . . . . .

40weeksandover . , . , . . . .

Notstated . . . . . . . . . . . .

ALL OTHER

Live births

All live births

All periods of gestation , . 16,229 54,305 165,848

,

10 12

475 195

3,166 1,397

5,604 7,050

2,081 7,747

1,473 10,402

2,640 25,231

850 2,271

36

193

651

3,883

7,905

30,167

116,667

6,116

47

127

418

2,751

8,221

33,688

168,381

9,050

21

45

127

983

4,455

12,282

101,4s9

4,746

123,347

17

44

123

976

4.413

12/229

100,837

4,706

2

26

170

1,466

2,151

25,261

1,057

29,828

2

26

169

1#449

2,129

25,014

1,039

2

8

10

52

578

493

6,665

276

7,952

2

4

9

50

567 “

490

6,568

272

89

Under 20weeke . . . . . . . . .

20-27 weeks . . . . . . . . . . .

28-31 weeks . . . . . . . . . . .

32-35 weeks, . . . . . . . . . .

36waeks . . . . . . . . . . . .

37-39 wake . . . . . . . . . . .

40weeksandover. . . . . . . .

Notsteted . . . . . . . . . . . . .

Soo

6,722

10,108

22,364

32,262

90,916

468,086

25,428

639,649

200

1,828

6,998

20,646

32,085

90,000

463,742

24,050

434

4,221

1,063

275

68

37

127

565

794

60

341

188

64

29

20

33

59

36

1,458

3,210

1,506

331

213

485

477

4,366

20

614

1.792

1,017

228

153

350

192

Survivors to 28 days

All periods of gestation . . 14,114 62,636

12

179

1,25+3

6,731

7,517

10,156

24,627

2,1!33

164,364

36

191

630

3,929

7,829

28,952

115,814

242,128

47

123

411

2,728

8,154

33,523

188,195

8,947

Under 20weeks . , ., . . , , . ,

20-27 weeks . . . . . . . . . . . .

2B-31weaks . . . . . . . . . . . .

32-35 weeks . .,, .,......

36weeks . . . . . . . . . . . . .

37.39 weeks . . . . . . . . . . . .

40waeksandover , , . . . . . . .

Notstated, . . . . . . . . . . . .

4

332

2,561

4,882

1,689

1,348

2,314

674 6$003
Table 20. Probabilities of dying at agas 28 days-l 1 months per 100,000 survivors, by birth weight, color, and pariod of gestation: Unitad States, 1960

Iivati’rth cohort

t

Total 1,000

grams

or

less

6irth weight

4,501

grams

or

more

1,001

to

1,500

grams

1,501 2,001 2,501 3,001 3,501

to to to to to

2,000 2,500 3,000 3,500 4,00fJ

grams I grams grams grams grams

4,001

to

4,500

grams

Color and

period of gestation

Total

Allperiods of gestation . . . .

Under 20weeks . . . . . . . . . . .

20-27 weeks . . . . . . . . . . . . .

28-31 waeks . . . . . . . . . . . . .

32-35 weeks . . . . . . . . . . . . .

36weeks . . . . . . . . . . . . . . .

37-39 weeks . . . . . . . . . . . . .

40waeksand over . . . . . . . . . .

Not statad . . . . . . . . . . . . . .

White

All pariods of gestation . . . .

Under 20weeks . . . . . . . . . . . .

20-27 weeks . . . . . . . . . . . . .

28-31 weeks . . . . . . . . . . . . .

32-35 weeks . . . . . . . . . . . . .

36weeks . . . . . . . . . . . . . . .

37-39 waeks . . . . . . . . . . . . .

40weaksand over . . . . . . . . . .

Notstated . . . . . . . . . . . . . .

All other

All periods of gestation . . . .

Under 20weeks . . . . . . . . . . .

20-27 weeks . . . . . . . . . . . . .

28-31 waeks . . . . . . . . . . . . .

32-35 weeks . . . . . . . . . . . . .

36 weeks . . . . . . . . . . . . . . .

37-39 weeks . . . . . . . . . . . . .

40weeksand over . . . . . . . . . .

Notstatwl . . . . . . . . . . . . . .

Probability of dying per 100,000 survivors

686.9 7.402.2 5,654.3 3,173.9 1,774.7 915.4 548.1 434.8 412.7 457.1

746.3

1,257.9

884.2

798.5

804.7

484,8

548.5

593.2

449.1

344.8

$,406.4

3,894.7

1,782.4

1,237.7

616.3

607.6

862.7

538.0

546.4

5,058.4

12,342.6

7,558.1

5,405.4

4,761.9

1,639.3

25,714.3

6,782.2

5,725.0

5,714.8

5,010.1

5,165.0

5,202.3

7,013.0

7,611.5

4,620.8

4,668.3

3,836.8

2,757.0

2,762.7

2,492.8

4,023.9

3$98.8

2,559.3

2,144.8

3,044.1

1,663.6

1,713.1

1,331.3

1,946.9

2,492.0

1,376.9

1,714.3

1,421.5

1,061.7

I,143.9

723.7

944.9

I,075.0

732.4

3,947.4

423.7

532.3

794.8

360.4

426.6

582.7

369.6

542.0

918.3

426.5

390.3

584.0

341.5

787.9

568.9

4+j.8

4;2.5

u

35)5.0

1,149.4

1,025.6

1,130.7

683.8

634.0

447.2

438.8

500.3

1,107.3

1,626.0

729.9

1,099.7

1,300.0

730.s

1,150.4

1,453.0

263<2

3,547.6

3,110.3

1,490.1

971.6

539.2

470.6

675.3

1,510.8

500.0

5,744.0

5,444.4

2,673.6

2,038.3

1,082.2

1,377.5

2,523.9

4,512.4

12,918.7

3,203.7

12,500.0

4,545.5

1,123.6

30,864.2

8,438.3

1,666.7

6,158.4

11,702.1

14,062.5

3,448.3

5,000.0

3,030.3

18,644.1

4,229.6

4,602.7

4,697.7

5,117.3

3,005.5

5,000.0

5,964.9

7,764.5

8,143.3

7,979.9

5,998.0

5,263.3

10,457.5

9,428.6

12,500.0

4,564.3

2,828.9

2,359.2

2,140.2

2,244.5

2,926.5

3,259.6

4,768.3

4,819.3

5,700.9

3,894.0

4,370.7

3,338.3

6,179.8

6,824.9

1,030.9

2,211.5

1,336.8

1,336.2

1,133.5

1,461.6

1,859.7

2,852.4

3,352.0

4,690.0

2,793.0

2,820.3

2,126.8

3,061.7

5,519.5

628.9

1,619.4

888.3

932.9

635.1

733.0

876.9

1,589.9

2,617.8

1,111.1

1,603.5

1,877.6

1,151.8

1,658.7

2,355.5

925.9

266.5

467.5

542.6

321.8

355.0

449.2

1,050.7

11,363.6

813.0

717.2

1,563.6

703.2

1,014.5

2,230.2

703.0

714.7

399.9

321.1

468.7

1,096.3

1,449.3

704.6

1,063.4

2,406.2

506.6

337.1

305.1

1,194.7

529.1

1,020.4

1,250.4

1,838.2

90
I

Series 1.

Series 2.

Series 3.

Series 4.

Series 10.

Series 1 I.

Series 12.

Series 13.

Series 14.

Series 20.

Series 21.

Series 22.

Series 23.

VITAL AND HEALTH STATISTICS Series

Programs and Collection procedures. –Reports which describe the general programs of the National

Center for Heafth Statistics and its offices and divisions and data collection methods used and include

definitions and other material necessary for understanding the data.

Data Evaluation and Methods Research. –Studies of new statistical methodology including experimental tests of new survey methods, studies of vital statistics collection methods, new analytical

techniques, objective evaluations of reliability of collected data, and contributions to statistical theory.

Analytical Studies. –Reports presenting analytical or interpretive studies based on vital and health

statistics, carrying the analysis further than the expository types of reports in the other series.

Documents and Committee Reports. –Final reports of major committees concerned with vital and

health statistics and documents such as recommended model vital registration laws and revised birth

and death certificates.

Data From the Health Interview Survey. –Statistics on illness, accidental injuries, disability, use of

hospital, medical, dental, and other services, and other health-related topics, all based on data colle~ed

in a continuing national household interview survey.

Data From the Health Examination Survey and the Health and Nutrition Examination Survey .–Data

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to physicaf, physiological, and psychological characteristics and (2) analysis of relationships among the

various measurements without reference to an explicit finite universe of persons.

Data From the Institutionalized Population Surveys. –Discontinued effective 1975. Future reports from

these surveys will be in Series 13.

Data on Health Resources Utilization. –Statistics on the utilization of health manpower and facilities

providing long-term care, ambulatory care, hospitaJ care, and family planning services.

Data on Health Resources: Manpower and Facilities. –Statistics on the numbers, geographic distribution, and characteristics of health resources including physicians, dentists, nurses, other health

occupations, hospitals, nursing homes, and outpatient facilities.

Data on Mortality. –Various statistics on mortality other than as included in regular annual or monthly

reports. Speciaf analyses by cause of death, age, and other demographic variables; geographic and time

series analyses; and statistics on characteristics of deaths not available from the vital records based on

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Data on Natality, Marriage, and Divorce. –Various statistics on natality, marriage, and divorce other

than as included in regular annual or monthly reports. Special analyses by demographic variables;

geographic and time series analyses; studies of fertility; and statistics on characteristics of births not

available from the vital records based on sample surveys of those records.

Data From the National Mortality and Natality Surveys. –Discontinued effective 1975. Future reports

from these sample surveys based on vital records will be included in Series 20 and 21, respectively.

Data From the National Suruey of Family Gro wth. –Statistics on fertiIity, family formation and dissolution, family planning, and related mat”ernal and infant health topics derived from a biennial survey

of a nationwide probability sample of ever-married women 15-44 years of age.

For a list of titles of reports published in these series, write to: Scientific and Technical Information Branch

National Center for Health Statistics

Public Health Service

Hyattsville, Md. 20782

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