bluuebunny/crossref_metadata_2025 huggingface dataset:
Cesarean section use and source of payment: an analysis of California hospital discharge abstracts.
Authors: Stafford R S
Published: November 2008

This study assessed the relation between payment source and cesarean section use by analyzing California data on hospital deliveries. Of 461,066 deliveries in 1986, cesarean sections were performed in 24.4 percent. Women with private insurance had the highest cesarean section rates (29.1 percent). Successively lower rates were observed for women covered by non-Kaiser health maintenance organizations (26.8 percent), Medi-Cal (22.9 percent), Kaiser (19.7 percent), self-pay (19.3 percent), and Indigent Services (15.6 percent). Vaginal birth after cesarean (VBAC) occurred more than twice as frequently in women covered by Kaiser (19.9 percent) and Indigent Services (24.8 percent), compared to those with private insurance (8.1 percent). Sizable, although less pronounced, associations between payment source and cesarean section use were noted for the indications of breech presentation, dystocia, and fetal distress. Accounting for maternal age and race/ethnicity did not alter these findings. Variations in the use of cesarean section have a substantial financial impact on health care payors.
The effects of case definition in maternal screening and reporting criteria on rates of congenital syphilis.
Authors: Cohen D A , Boyd D , Prabhudas I , Mascola L
Published: November 2008

Reports of congenital syphilis in 1987 were reviewed to determine how new national guidelines for defining congenital syphilis would influence reported rates in Los Angeles County. After reviewing all reported reactive serologic tests for syphilis, we found 166 additional cases, resulting in a 426 percent increase in the 1987 reported rate of congenital syphilis. Rates of congenital syphilis are dependent upon surveillance practices, screening policies, and case definition.
The quality of ambulatory care in Medicare health maintenance organizations.
Authors: Retchin S M , Brown B
Published: November 2008

The quality of ambulatory care received by Medicare recipients who enrolled in health maintenance organizations (HMOs) was compared to the care received by fee-for-service (FFS) Medicare recipients, in a quasi-experimental, non-randomized design. Both samples were drawn from the four major geographic areas in the country, and included two types of HMO practices: staff/group models, and independent practice associations (IPAs). A panel of expert physicians developed criteria for evaluating ambulatory care, and medical record abstractions using these criteria were performed on 1,590 outpatient records: 777 FFS and 813 HMO (441 staff/group, 372 IPA). While individual items of medical histories and physical examinations were performed most often for staff/group HMO patients and least often in FFS patients, odds ratios (OR) for performance in staff/group HMO patients were particularly large for health maintenance items: tonometry (OR = 8.4), mammography (OR = 2.7), pelvic examination (OR = 5.3), rectal examination (OR = 2.9), fecal occult blood test (OR = 3.3). The results suggest that recommended elements of routine and preventive care are more likely to be performed for Medicare enrollees in staff/group HMOs than in FFS settings.
HIV-1 counseling and testing sites, Minnesota: analysis of trends in client characteristics.
Authors: Danila R N , Shultz J M , Osterholm M T , Henry K , Simpson M L , MacDonald K L
Published: November 2008

We report here a summary of the data obtained from two HIV-1 antibody counseling and testing sites in Minneapolis-St. Paul for the first 48 months of operation (24,911 persons tested). The HIV-1 antibody seroprevalence rate for all persons tested was 5 percent. The highest seroprevalence rates were in male homosexual/bisexual intravenous drug users (23 percent) and homosexual/bisexual men (13 percent). There was a significant decrease in the HIV-1 antibody seroprevalence rate among clients during the 48-month period from 14 percent in the first six months to 3 percent in the last six months. This decrease coincided with an increase in the number of low-risk female clients and low-risk heterosexual male clients, and a decrease in the number of homosexual/bisexual males participating in the programs. These findings suggest the need for development and implementation of other strategies to identify and reach persons at highest risk for HIV-1 infection.
The economic impact of injuries: a major source of medical costs.
Authors: Harlan L C , Harlan W R , Parsons P E
Published: November 2008

Data from the 1980 National Medical Care Utilization and Expenditure Survey were analyzed to place the costs for injuries in the context of all medical costs and to describe the distribution by demographic and diagnostic groups. For the non-institutionalized population, injuries, which include intentional and unintentional, were the second leading cause of direct medical costs, accounting for $16,745 million in medical care expenditures and a major contributor to work loss and disability in the US. For the working-age population (17-64 years) injuries were the leading cost category ($11,341 million) and the third most costly category for persons 65 years of age and over ($3,479 million). The preponderance of costs were attributable to hospital-based care. Direct medical costs were disproportionately greater for males, White and other persons, and for those with household incomes less than $5,000. Injury morbidity also accounts for major indirect costs. Fractures accounted for the highest direct medical costs, greatest per capita charges (based on those with charges), and largest number of restricted activity days. These national estimates document the economic importance of injuries and direct public attention to policy imperatives related to research and prevention.
The prevalence of high-risk sexual behavior in male intravenous drug users with steady female partners.
Authors: Lewis D K , Watters J K , Case P
Published: November 2008

A sample of 149 (70 White, 79 Black) male intravenous drug users with steady female sexual partners was interviewed in 1987, in treatment and street settings, about sexual practices during the previous five years. Eighty-three percent had multiple partners, 15 percent reported male sexual contact, 38 percent reported heterosexual anal intercourse, and 73 percent never used condoms. Thirty-seven White and 30 Black subjects reported bisexuality or heterosexual and intercourse or both.
Are patients talking to their physicians about AIDS?
Authors: Gerbert B , Maguire B T , Coates T J
Published: November 2008

We conducted a nationwide telephone survey of a random sample of United States adults in summer 1988 (n = 2000, response rate = 75 percent) to find out if physicians were providing education and counseling to the public about AIDS and AIDS prevention. Within the previous five years, 94 percent had seen a physician but only 15 percent had discussed AIDS even though most said they would not object to discussing the topic. AIDS-related conversations are not commonplace in physician's offices and in most cases (72 percent) patients are the initiators of such conversations.
Influenza epidemics and anencephaly.
Authors: Saxén L , Holmberg P C , Kurppa K , Kuosma E , Pyhälä R
Published: November 2008

To explore the postulated association between maternal influenza and congenital defects of the central nervous system, 14 virologically verified epidemics in Finland, 1969-82, were studied. Mothers of 248 anencephalic children were grouped into those whose first trimester had occurred during an epidemic period and those whose pregnancy had commenced during a non-epidemic period. No significant differences in prevalence of anencephaly were noted in these groups.
Tobacco excise and declining tobacco consumption: the case of Papua New Guinea.
Authors: Chapman S , Richardson J
Published: November 2008

Excise elasticities of demand for non-cigarette tobacco and cigarettes were calculated for Papua New Guinea for the 14 years 1973-86. Respectively, these were -0.50 and -0.71. This means that 10 percent increases in cigarette and non-cigarette tobacco excise are associated with an estimated 7.1 percent fall in demand for cigarettes and a 5 percent decrease in the demand for tobacco. As tax (excise) elasticities would normally be significantly smaller than price elasticities, these results imply that the consumption of cigarettes and tobacco in Papua New Guinea are more responsive to prices than in the United States and other Western countries. The level of excise is therefore an important and practical instrument for the control of consumption. These elasticities appear to be the first reported for a developing country. It is suggested that if they are indicative of consumer behavior in lower income countries then increasing tobacco and cigarette excise should be considered as an important strategy for the control of smoking in these countries which, because of their large populations, are huge markets for tobacco products and thus major targets for tobacco control measures.
Long-term effectiveness of mass media led antismoking campaigns in Australia.
Authors: Pierce J P , Macaskill P , Hill D
Published: November 2008

A community antismoking campaign began in Sydney, Australia in 1983, and in Melbourne in 1984. These campaigns purchased prime-time television advertising spots to set the community agenda. An intense effort was made to ensure that antismoking activities were maximized at the school, organizational, and community level. Smoking prevalences in both cities from 1981 were fitted with a statistical model to identify any underlying trend, to assess any immediate impact, and to assess the longer term effect of continuing to conduct such campaigns, i.e. to identify any change in the underlying trend. During the years before the antismoking campaigns, there was no observable trend in smoking prevalence in either city. At the beginning of the campaigns, there was an immediate drop of more than two percentage points in male and female smoking prevalence in both cities. Thereafter, a decline of about 1.5 percentage points per year was observed among males. No post campaign trend was observed in smoking prevalence for women in either city. These data support conducting coordinated community campaigns to reduce current smoking prevalence.
Violence during pregnancy and substance use.
Authors: Amaro H , Fried L E , Cabral H , Zuckerman B
Published: November 2008

Violent incidents were assessed as part of a prospective study of 1,243 pregnant women. Participants were predominantly poor, urban, minority group women. Seven percent (n = 92) of women reported physical or sexual violence during pregnancy. Most of the women (94 percent) knew their assailant. Victims of violence were at greater risk of having a history of depression and attempted suicide, having more current depressive symptoms, reporting less happiness about being pregnant, and receiving less emotional support from others for the current pregnancy. Comparisons of victims and non-victims showed that victims were more likely to be users of alcohol and drugs. In addition, partners of victims were more likely to use marijuana and cocaine. When possible confounders were controlled using multivariable analyses, a woman's alcohol use during pregnancy and her partner's drug use were independently associated with an increased risk of being a victim of violence during pregnancy. Results of this study highlight the importance of assessing exposure to violence during prenatal care, especially among women who are heavy users of alcohol or drugs or whose partners use these substances.
Risk factors for depressive symptomatology in a drug using population.
Authors: Buckner J C , Mandell W
Published: November 2008

This study employs a prospective design to examine possible personality, drug use, stressful life event, and social support-related variables associated with the onset of a depressive episode in a cohort of psychoactive drug using young adults. Two waves of data, collected one year apart, were available on 942 individuals. Cases (n = 62) were free of depressive symptoms at time 1 but reported significant symptomatology at time 2 as measured by the depression subscale of the Brief Symptom Inventory. Controls (n = 490) were those free of depressive symptoms at both time points. In multivariate analyses, users of the central nervous system depressant methaqualone had a nearly four-fold elevated risk for depressed mood as compared to nonusers. Additional risk factors significant after multivariate adjustment included lower self-esteem at time 1 and negative life events. These results highlight the multifactorial nature of depressive symptomatology.
Carbon monoxide in indoor ice skating rinks: evaluation of absorption by adult hockey players.
Authors: Lévesque B , Dewailly E , Lavoie R , Prud'Homme D , Allaire S
Published: November 2008

We evaluated alveolar carbon monoxide (CO) levels of 122 male, adult hockey players active in recreational leagues of the Quebec City region (Canada), before and after 10 weekly 90-minute games in 10 different rinks. We also determined exposure by quantifying the average CO level in the rink during the games. Other variables documented included age, pulmonary function, aerobic capacity, and smoking status. Environmental concentrations varied from 1.6 to 131.5 parts per million (ppm). We examined the absorption/exposure relationship using a simple linear regression model. In low CO exposure levels, physical exercise lowered the alveolar CO concentration. However, we noted that for each 10 ppm of CO in the ambient air, the players had adsorbed enough CO to raise their carboxyhemoglobin (COHb) levels by 1 percent. This relationship was true both for smokers and non-smokers. We suggest that an average environmental concentration of 20 ppm of CO for the duration of a hockey game (90 minutes) should be reference limit not to be exceeded in indoor skating rinks.
Passive smoking and 20-year cardiovascular disease mortality among nonsmoking wives, Evans County, Georgia.
Authors: Humble C , Croft J , Gerber A , Casper M , Hames C G , Tyroler H A
Published: November 2008

The association of passive smoking and cardiovascular disease (CVD) mortality was assessed in a cohort of 513 rural, married Black and White women who were disease-free and self-described as never-smokers at baseline in 1960. Over a 20-year period, 76 of 147 total deaths were attributed to CVD. Relative risk estimates adjusted for age, cholesterol, blood pressure, and body mass from proportional hazards models were 1.59 for CVD (95% CI = 0.99, 2.57) and 1.39 (CI = 0.99, 1.94) for all cause mortality among women with husbands who smoked cigarettes.
Routine communication in sexually transmitted disease clinics: an observational study.
Authors: Roter D L , Knowles N , Somerfield M , Baldwin J
Published: November 2008

Sixty STD patients were followed during the course of their clinic visit which averaged 2.75 professional contacts. Based on audiotape analysis, virtually all patients received a diagnosis; however, 25 percent of the patients did not receive any information about treatment or prevention, and only 57 percent of patients were given complete information. Patient recall of the information they were given averaged about 43 percent. Patients not seen by a physician during their clinic visit achieved higher recall rates than patients seen by a physician.
Dietary intake of Americans reporting adherence to a low cholesterol diet (NHANES II).
Authors: Schectman G , McKinney W P , Pleuss J , Hoffman R G
Published: November 2008

We studied the dietary intake of persons age 18 and over participating in the 1976-80 National Health and Nutrition Examination Survey (NHANES II). We compared the diets of those on a "low cholesterol" diet (dieters, n = 296) with the diets of individuals not following a special diet (non-dieters, n = 10,052). Dietary intakes were assessed by 24-hour recall and food frequency reports and were adjusted for differences in age, sex, race, education, smoking, and socioeconomic status by multivariate statistical techniques. Dieters consumed 16 percent (99% confidence interval(-) -24, -9 fewer calories than non-dieters, and had decreased intake of saturated fat by 25 percent (-34, -15) and cholesterol by 21 percent (-32, -10). However, their intake of vitamin A, thiamine, riboflavin, niacin, calcium, and iron were not significantly different from non-dieters and their ascorbic acid intake was 18 percent (1, 36) higher. The nutrient density (nutrient/1000 kcal) among dieters was increased over non-dieters by 35 percent (-3, 72) for vitamin A, 35 percent (1, 70) for thiamine, 30 percent (-4, 65) for riboflavin, 27 percent (9, 44) for niacin, 60 percent (40, 80) for vitamin C, 14 percent for calcium (-5, 32), and 15 percent for iron (6,25). Compared with non-dieters, dieters consumed 27 percent (9, 45) more poultry and 39 percent (12, 66) more fish, but consumed 30 percent (-44, -16) less eggs and 15 percent (-24, -6) less meat.
Ten-year changes in birthweight distributions of black and white infants, South Carolina.
Authors: Mayberry R M , Lewis R F
Published: November 2008

The birthweight distributions of Black and White infants in South Carolina were compared for the paired-year periods 1975-76 and 1985-86. No discernible changes in birthweight distributions between the two time periods were observed especially among Black infants. The distributions among White infants reflected an overall improvement in birthweight most noticeably above 2500g.
Occupational physical activity and other risk factors for preterm birth among US Army primigravidas.
Authors: Ramirez G , Grimes R M , Annegers J F , Davis B R , Slater C H
Published: November 2008

We examined the relation of occupational physical activity to the risk of preterm birth among US Army active-duty primigravidas between 1981 and 1984 using 604 cases (preterm deliveries; less than or equal to 37 weeks gestation) and 6,070 controls (term and post-term deliveries). Women employed in the highest physical activity levels had increased odds of preterm delivery ranging from 1.69 to 1.75. The relation was not changed by adjustment for the effects of age, marital status, socioeconomic status, or education. Missing data suggest cautious interpretation.
Loss of maternally acquired measles antibodies in well-nourished infants and response to measles vaccination, Peru.
Authors: Vaisberg A , Alvarez J O , Hernandez H , Guillen D , Chu P , Colarossi A
Published: November 2008

Clinical, anthropometric, and serological evaluations were conducted at birth and at 3, 6, 9, and 10 months (post measles vaccination) in 34 well-nourished Peruvian infants. Seroconversion rate after measles vaccination was 94 percent. The rate of antibody loss was a direct function of birth titer; at age 9 months, all children had identical mean titers regardless of their titer at birth. Differences in maternally acquired measles antibodies at birth were important only during the first six months of life.
Access to obstetric care in rural areas: effect on birth outcomes.
Authors: Nesbitt T S , Connell F A , Hart L G , Rosenblatt R A
Published: November 2008

Hospital discharge data from 33 rural hospital service areas in Washington State were categorized by the extent to which patients left their local communities for obstetrical services. Women from communities with relatively few obstetrical providers in proportion to number of births were less likely to deliver in their local community hospital than women in rural communities with greater numbers of physicians practicing obstetrics in proportion to number of births. Women from these high-outflow communities had a greater proportion of complicated deliveries, higher rates of prematurity, and higher costs of neonatal care than women from communities where most patients delivered in the local hospital.
The impact of DRGs on community-based service providers: implications for the elderly.
Authors: Wood J B , Estes C L
Published: November 2008

We investigated changes in community-based agencies following the implementation of the Medicare prospective payment system for hospitals utilizing DRGs (diagnosis-related groups). Data were collected in 1986 and 1987 from 771 community service providers. There were five major findings: 1) hospital discharge planners, nursing homes, and home health agencies experienced DRG effects before other types of community providers studies; 2) the "reach" of DRG impact is widespread; 3) providers report a change in clientele toward a heavier-care client; 4) the impact of DRGs affects the types of services agencies provide; and 5) community providers have experienced a decrease in their ability to refer their clients both to hospitals and to each other.
Public health implications of the microbial pesticide Bacillus thuringiensis: an epidemiological study, Oregon, 1985-86.
Authors: Green M , Heumann M , Sokolow R , Foster L R , Bryant R , Skeels M
Published: November 2008

Bacillus thuringiensis var. kurstaki (B.t.-k) is a microbial pesticide which has been widely used for over 30 years. Its safety for a human population living in sprayed areas has never been tested. Surveillance for human infections caused by B.t.-k among Lane County, Oregon residents was conducted during two seasons of aerial B.t.-k spraying for gypsy moth control. Bacillus isolates from cultures obtained for routine clinical purposes were tested for presence of Bacillus thuringiensis (B.t.). Detailed clinical information was obtained for all B.t.-positive patients. About 80,000 people lived in the first year's spray area, and 40,000 in the second year's area. A total of 55 B.t.-positive cultures were identified. The cultures had been taken from 18 different body sites or fluids. Fifty-two (95 percent) of the B.t. isolates were assessed to be probable contaminants and not the cause of clinical illness. For three patients, B.t. could neither be ruled in nor out as a pathogen. Each of these three B.t.-positive patients had preexisting medical problems. The level of risk for B.t.-k and other existing or future microbial pesticides in immunocompromised hosts deserves further study.
Risk factors for syphilis: cocaine use and prostitution.
Authors: Rolfs R T , Goldberg M , Sharrar R G
Published: November 2008

In Philadelphia, a large increase in syphilis among minority group heterosexuals began in 1986 and preceded similar increases elsewhere in the United States. To determine reasons for this increase, we conducted a case-control study in the metropolitan sexually transmitted diseases clinic during 1987 and 1988. Cocaine use (odds ratio [OR] 3.1; 95% confidence interval [95% CI] = 1.5, 6.5 among men; OR 5.8; 95% CI = 1.5, 33 among women) and exchange of drugs for sex (OR 3.5; 95% CI = 1.4, 8.7 among men) were risk factors for syphilis. Although cocaine users reported more sexual partners and more frequently reported sex with prostitutes, cocaine use remained a risk factor after adjustment for these behaviors. These data suggest that sexual behavior or another factor, such as availability or utilization of health care, among cocaine users leads to increased risk of syphilis in this population. Increases in cocaine use may be partly responsible for recent increases in syphilis incidence in the United States.
Patient 'dumping' post-COBRA.
Authors: Kellermann A L , Hackman B B
Published: November 2008

To gauge the impact of the new federal patient transfer provisions following the federal Combined Budget Reconciliation Act of 1985 (COBRA), we monitored all emergency interhospital transfers to a public hospital emergency department in the Memphis, Tennessee area during three identical time periods: June 1 to August 31 of 1986, 1987, and 1988. A high number of transfers in the summer of 1986 diminished only slightly in summer 1987 (following implementation of COBRA). Far greater reductions occurred in summer 1988, when overcrowding forced our hospital to refuse most transfers. In contrast to changes in hospital policy, COBRA alone had little effect in this area.
Hip fracture incidence among the old and very old: a population-based study of 745,435 cases.
Authors: Jacobsen S J , Goldberg J , Miles T P , Brody J A , Stiers W , Rimm A A
Published: November 2008

Data were obtained from the Health Care Financing Administration and the Department of Veterans Affairs (formerly called Veterans Administration) on all hospital discharges among the elderly population from 1984 through 1987 and combined with census estimates to calculate incidence rates of hip fracture for the elderly population of the United States. Rates for White women were the highest, reaching 35.4 per 1,000 per year among 95 year-olds. Comparably, White men, Black women, and Black men experienced similar age-related increases in risk, although of less magnitude and relatively less rate of change, respectively.
Environmental and biological monitoring for lead exposure in California workplaces.
Authors: Rudolph L , Sharp D S , Samuels S , Perkins C , Rosenberg J
Published: November 2008

Patterns of environmental and biological monitoring for lead exposure were surveyed in lead-using industries in California. Employer self-reporting indicates a large proportion of potentially lead-exposed workers have never participated in a monitoring program. Only 2.6 percent of facilities have done environmental monitoring for lead, and only 1.4 percent have routine biological monitoring programs. Monitoring practices vary by size of facility, with higher proportions in industries in which larger facilities predominate. Almost 80 percent of battery manufacturing employees work in job classifications which have been monitored, versus only 1 percent of radiator-repair workers. These findings suggest that laboratory-based surveillance for occupational lead poisoning may seriously underestimate the true number of lead poisoned workers and raise serious questions regarding compliance with key elements of the OSHA Lead Standard.
Cancer mortality in Native Americans in North Carolina.
Authors: Horner R D
Published: November 2008

This paper describes age-adjusted mortality from malignant neoplasms for Native Americans in North Carolina for 1968-72 and 1978-82. Sex-specific standardized mortality ratios were calculated from death certificate data, using the cancer mortality experience of White North Carolinians to obtain the number of expected deaths. For most categories and specific sites of cancer, mortality was at or below the expected level, but higher than expected mortality was found for genitourinary cancers in males (SMR = 1.62, 95% CI = 1.15, 2.21) for the 1978-82 period; within this category, there was a higher than expected level of mortality from prostate cancer (SMR = 2.00; 95% CI = 1.36, 2.83) and cancer of the penis and other male genital organs (SMR = 9.09; 95% CI = 1.10, 32.84). Female Native Americans had an elevated mortality from cervical cancer (SMR = 2.27, 95% CI = 1.09, 4.17) for the 1968-72 period only.
Defining arthritis and measuring functional status in elders: methodological issues in the study of disease and physical disability.
Authors: Guccione A A , Felson D T , Anderson J J
Published: November 2008

This study explores the degree to which the association of knee osteoarthritis with physical disability changes with different definitions of osteoarthritis in 1,416 Framingham Study elders. When all categories of radiographic osteoarthritis were aggregated into a single "arthritis" variable and dependence upon human assistance in one or more functional activities combined into a single variable, elders with osteoarthritis had only moderately increased odds for dependence after controlling for age or sex (OR = 1.25). A definition of osteoarthritis based only upon symptoms produced larger odds for dependency (OR = 1.85). Elders with mild osteoarthritis and infrequent knee pain had no significantly elevated risk for dependence in any of the seven functional activities. Elders with infrequently symptomatic, moderate to marked radiographic osteoarthritis were at increased risk for dependence in stair climbing, walking a mile, housekeeping, and carrying bundles. Elder with radiographic osteoarthritis accompanied by frequent pain had an increased odds of dependence in stair climbing, walking a mile, and housekeeping. Using a generic definition of "arthritis" and aggregating functional activities may underestimate the impact of osteoarthritis on physical disability in the elderly and obscure the task-specific nature of that relationship.
Playground hazards in Atlanta child care centers.
Authors: Sacks J J , Holt K W , Holmgreen P , Colwell L S , Brown J M
Published: November 2008

We identified 684 playground hazards in 66 child care centers despite regulations mandating that the grounds be hazard-free. Of 21 centers with less than or equal to 5 hazards, 42.9 percent reported a playground-related injury in the previous year; of 25 centers with 6-11 hazards, 52.0 percent reported a playground-related injury; and of 20 centers with greater than or equal to 12 hazards, 60.0 percent reported a playground-related injury. Climbing equipment greater than or equal to 6 feet tall generally had inadequate impact-absorbing undersurfacing and had over twice the rate of fall injuries as climbing equipment less than 6 feet.
A personal monitoring study to assess workplace exposure to environmental tobacco smoke.
Authors: Coultas D B , Samet J M , McCarthy J F , Spengler J D
Published: November 2008

We enrolled 15 nonsmoking volunteers to evaluate the feasibility of measuring personal exposure to environmental tobacco smoke (ETS) at work and to characterize workplace exposures. During one workshift, we obtained questionnaires on exposure, saliva and urine for cotinine, and personal air samples for respirable particles and nicotine. The levels of cotinine, respirable particles, and nicotine varied widely with self-reports of exposure to ETS, but on average increased with increasing exposure.
Maintenance of nonsmoking postpartum by women who stopped smoking during pregnancy.
Authors: Mullen P D , Quinn V P , Ershoff D H
Published: November 2008

This paper describes self-reported maintenance of nonsmoking at six months postpartum by women whose abstinence was verified beginning before the 20th week of pregnancy and continuing through delivery (n = 134). The overall maintenance rate of 37 percent was not related to sociodemographic characteristics, smoking and obstetric history, the time when quitting occurred, or a prenatal smoking cessation program. Although this rate is encouraging, more attention should be directed to sustaining prenatal abstinence from smoking beyond delivery.
Changes in needle sharing behavior among intravenous drug users: San Francisco, 1986-88.
Authors: Guydish J R , Abramowitz A , Woods W , Black D M , Sorensen J L
Published: November 2008

We analyzed data for San Francisco intravenous drug users entering treatment, April 1986-September 1988 (N = 7,660). The proportion of cases reporting any needle sharing in the month preceding treatment decreased from 50 percent in 1986 to 28 percent in 1988. Similar decreases were reported by two longitudinal cohorts (needle sharing by the same individuals) admitted in 1986 and 1987 (n = 303), and in 1986 and 1988 (n = 205). In a multiple logistic regression model four variables predicted needle sharing: earlier time of admission, cocaine use, younger age, and being White rather than Black.
Racial differences in serum cotinine levels among smokers in the Coronary Artery Risk Development in (Young) Adults study.
Authors: Wagenknecht L E , Cutter G R , Haley N J , Sidney S , Manolio T A , Hughes G H , Jacobs D R
Published: November 2008

Cotinine was measured in the serum of nearly all 5,115 18-30 year old, Black and White, men and women participating in the Coronary Artery Risk Development in (Young) Adults Study, 30 percent of whom reported current cigarette smoking. Ninety-five percent of the reported smokers had serum cotinine levels indicative of smoking (greater than 13 ng/ml). The median cotinine level was higher in Black than White smokers (221 ng/ml versus 170 ng/ml; 95 percent CI for difference: 34, 65) in spite of the fact that estimated daily nicotine exposure and serum thiocyanate were higher in Whites. The difference persisted after controlling for number of cigarettes, nicotine content, frequency of inhalation, weekly sidestream smoke exposure, age, gender, and education. A reporting bias and nicotine intake were ruled out as explanations for the racial difference suggesting that the metabolism of nicotine or the excretion of cotinine may differ by race. Racial differences in cotinine levels may provide clues to the reasons for the observed lower cessation rates and higher rates of some smoking-related cancers in Blacks.
Death resulting from motor vehicle immersions: the nature of the injuries, personal and environmental contributing factors, and potential interventions.
Authors: Wintemute G J , Kraus J F , Teret S P , Wright M A
Published: November 2008

We present an epidemiologic characterization of deaths from motor vehicle immersions, based on 77 deaths in 63 motor vehicle immersions in Sacramento County, CA, during 1974-85. All persons were autopsied; all but one of the deaths were due to drowning. Average annual mortality rates per million person years were 12 for males, four for females, 30 for Hispanics, six for White non-Hispanics, Blacks and Asians. Seventy-one percent of drivers and 60 percent of passengers had a blood alcohol concentration greater than or equal to 22 mmol/L. Most cases (57 percent) had an Injury Severity Score of 1 (minor injury) or 0 (no injury). Alcohol use was associated with higher Injury Severity Scores. Road curvature of 20 degrees or greater was far more common at crash sites than at matched control sites one mile away (OR = 6.57, 95% CI = 2.93, 14.71). Guard rail placement along highly curved sections of roadway may be an effective preventive measure.
Drownings in Minnesota, 1980-85: a population-based study.
Authors: Hedberg K , Gunderson P D , Vargas C , Osterholm M T , MacDonald K L
Published: November 2008

We conducted a population-based study of drownings in Minnesota from 1980 through 1985. Five hundred and forty-one drownings (2.1 per 100,000 person-years) were identified from death certificates and from incident reports filed with the Minnesota Department of Natural Resources. Most drownings (334, 62 percent) occurred during summer months (May-August) and involved boating (42 percent) and swimming (35 percent) events. However, 62 drownings (11 percent) occurred during winter months (December-February) and primarily involved snowmobiles and motor vehicles (71 percent) breaking through ice on lakes and waterways. The risk of drowning, estimated by the ratio of drownings to number of water-related activities, was highest during March and April, when the ice on lakes and waterway surfaces is melting, and during October and November, when lake and waterway surfaces are starting to freeze. Drowning rates were highest for males (3.7 per 100,000 person-years), persons 15 to 25 years of age (3.3 per 100,000 person-years), and children less than 5 years of age (2.5 per 100,000 person-years). These data can be used to target prevention strategies, particularly in northern climates.
Premarital screening for antibodies to human immunodeficiency virus type 1 in the United States. The Premarital Screening Study Group.
Authors: Petersen L R , White C R
Published: November 2008

To evaluate premarital human immunodeficiency virus (HIV) screening as an approach to AIDS prevention in the United States, we determined the HIV antibody seroprevalence in marriage license applicants in eight areas by blinded testing of blood specimens routinely collected for syphilis serology. The seroprevalences were 0.0-0.4 percent in women and 0.0-1.1 percent in men. We also examined the impact of mandatory premarital HIV screening on marriage rates in Louisiana and Illinois. In 1988, after screening began, 9 percent and 16 percent fewer marriage licenses than in the previous two years were issued in Louisiana and Illinois, respectively. We estimated that mandatory premarital screening, if adopted nationally, would cost $167,230,000. We conclude that compared with other HIV prevention programs mandatory premarital screening would be expensive and would probably have a minor impact on the HIV epidemic.
Teaching status and resource use for patients with acute myocardial infarction: a new look at the indirect costs of graduate medical education.
Authors: Udvarhelyi I S , Rosborough T , Lofgren R P , Lurie N , Epstein A M
Published: November 2008

To investigate whether the process of graduate medical education increases costs in teaching hospitals by causing longer lengths of stay and greater resource use, we compared lengths of stay, hospital charges, and the use of cardiovascular procedures for patients with acute myocardial infarction admitted to the teaching and nonteaching services of a university-affiliated community hospital. After adjusting for severity of illness and demographic characteristics, patients on the teaching services had a mean length of stay that was shorter by 0.6 days (p = 0.04) and mean charges that were $2,060 lower (p = 0.15) than for patients on the nonteaching service. Patients on the teaching service also had 15 percent (95% CI: -26, -4) fewer cardiac catheterizations and 9 percent (-18, 0) fewer procedures for myocardial revascularization (angioplasty or cardiac bypass surgery). These findings suggest that graduate medical education per se may not directly increase the use of health care resources and that the cost differences between teaching and nonteaching hospitals may be largely a consequence of other factors. These factors may include epiphenomena of teaching such as a specialized organizational structure, specialized patient care services, and continuing medical education for the nursing and medical staffs. They may also include factors not related to teaching such as differences in patients' severity of illness and sociodemographic characteristics.
Walking and serum cholesterol in adults.
Authors: Tucker L A , Friedman G M
Published: November 2008

We measured the association between walking for exercise and the ratio of total cholesterol/HDL cholesterol in 3,621 adults. After controlling for age, gender, income, body fat, alcohol use, exercise other than walking, and cigarette smoking, adults in the high, moderate, and low duration walking categories were compared to those in the no walking-no exercise category. The relative risk for total/HDL ratios of 5.0 or more were .46 (95% CI = .27, .80), .48 (95% total/HDL ratios of 5.0 or more were .46 (95% CI = .27, .80), .48 (95% CI = .30, .76), and 1.11 (95% CI = .81, 1.53) respectively.
Abstinence from smoking and expired-air carbon monoxide levels: lactose intolerance as a possible source of error.
Authors: McNeill A D , Owen L A , Belcher M , Sutherland G , Fleming S
Published: November 2008

We investigated a possible source of contamination of expired-air carbon monoxide (CO) readings on CO monitors from raised expired-air hydrogen (H2) levels, namely lactose intolerance, the norm in certain ethnic groups. A significant correlation between expired-air CO and H2 readings was observed in four non-smoking lactose maldigesters.
Health risk behaviors of Hispanics in the United States: findings from HHANES, 1982-84.
Authors: Marks G , Garcia M , Solis J M
Published: November 2008

With data from the Hispanic Health and Nutrition Examination Survey (HHANES), we examined several health risk behaviors (cigarette smoking, alcohol use, dietary practices, and recency of health screening) of Mexican American, Cuban American, and Puerto Rican adults (ages 20-74). For each sample, a greater percentage of men than women smoked cigarettes and used alcohol. Heavy smoking (20+ cigarettes per day) was most prevalent for Cuban American males, and heavy drinking (1.00+ oz ethanol per day) was most prevalent for Mexican American and Puerto Rican men. Acculturation correlated positively with alcohol use (particularly for females) and negatively with dietary balance (for Mexican American men and women). The Puerto Ricans' diet was less balanced than that of the other two groups. For each sample, more men than women had not had a routine physical or dental examination within the past five years; the recency of screening was lowest for Mexican American men. Screening (including Pap smear for the women) was lower for those who smoked cigarettes and for those with poor dietary practices, indicating that many Hispanics at special risk of disease underutilize preventive health services, increasing the likelihood of diagnosis at a later stage of illness.
Acculturation and alcohol consumption in the Mexican American population of the southwestern United States: findings from HHANES 1982-84.
Authors: Markides K S , Ray L A , Stroup-Benham C A , Treviño F
Published: November 2008

Data from the Southwestern sample of the Hispanic HANES are employed to evaluate the relationship of acculturation into the larger society with alcohol consumption. As in previous work, acculturation was not found to be related to alcohol consumption of Mexican American men, but was positively related to the consumption of younger Mexican American women. Among middle-aged women, acculturation was not important. However, we found evidence that middle-aged women might be turning to alcohol in response to marital disruption and poverty. In addition, middle-aged women who are not employed are less frequent drinkers but those who drink are heavier drinkers than employed women.
Hispanic Health and Nutrition Examination Survey: methodological considerations.
Authors: Delgado J L , Johnson C L , Roy I , Treviño F M
Published: November 2008

The Hispanic Health and Nutrition Examination Survey (HHANES) was the first special population survey undertaken by the National Center for Health Statistics. The HHANES was designed to assess the health and nutritional status and needs of Mexican Americans, mainland Puerto Ricans and Cuban Americans. Data were collected using five data collection techniques: direct physical examinations, diagnostic testing, anthropometry, laboratory analyses, and interviews. Unlike other surveys conducted by the National Center for Health Statistics, the HHANES was not designed as a national survey. The HHANES was a survey of three Hispanic subgroups of the population in selected areas of the United States with a survey universe that included approximately 76 percent of the 1980 Hispanic-origin population in the United States. This article discusses statistical issues that should be addressed by researchers when analyzing HHANES data. Specifically, analysts need to account for the complex sample design, nonresponse bias, potential non-coverage bias, and the regional nature of the HHANES sample.
The status of restrictive smoking policies: a survey of medical schools in the United States and Canada.
Authors: Stillman F A , Becker D M
Published: November 2008

All schools of medicine in the United States (N = 128) and Canada (N = 16) were surveyed by telephone to determine if they had instituted policies to restrict smoking. Some policy restricting smoking was reported by 80.56 percent of US schools (N = 103) and by 93.8 percent of Canadian schools (N = 15). However, only 52.3 percent of US (N = 67) and 56.3 percent of Canadian medical schools (N = 9) indicated they had formal written policy statements. Only 13 percent of US schools and 19 percent of Canadian schools had banned smoking totally.
Measurement of attitudes and behaviors in public health surveys.
Authors: Béland F , Maheux B , Lambert J
Published: November 2008

We divided 900 general practitioners into two groups: one group received a questionnaire measuring both attitudes and behaviors toward preventive aspects of medical care, while the other received two separate questionnaires--one measuring behaviors, and one measuring attitudes. Response rates of the two groups were similar. Respondents in the first group retrieved their answer to the attitudinal items when responding to behavioral items, increasing the correlations between attitudes and behaviors by an average of .147 as compared to the second group; hence the second procedure was preferable.
Patterns of medical employment: a survey of imbalances in urban Mexico.
Authors: Frenk J , Alagon J , Nigenda G , Muñoz-delRio A , Robledo C , Vaquez-Segovia L A , Ramírez-Cuadra C
Published: November 2008

This article quantifies the magnitude and correlates of the major imbalances affecting the employment of physicians in the urban areas of Mexico. Since the early 1970s the country has experienced a rapid increase in the supply of doctors, which its health system was unable to absorb fully. In 1986, we conducted a survey in the 16 most important cities based on a probability sample of households where someone with an MD degree lived. A total of 604 physicians were interviewed for a response rate of 97 percent. The unemployment rate was 7 percent of potentially active physicians; 11 percent held a nonmedical job, and another 11 percent exhibited low productivity and/or income. All in all, we project that 23,500 physicians in these cities were either unemployed or underemployed. This medical employment pattern was analyzed against five independent variables: generation (i.e. the year in which the physician started medical school), gender, social origin, medical school quality, and specialty. Apart from generation, type of specialty exhibited the strongest correlation with the employment situation of a physician. The results suggest that higher education and health care in Mexico may be producing rather than correcting social inequalities. Policy alternatives are discussed to restore a balance between the training of physicians, their gainful employment, and the health needs of the population.
Maternal feeding behavior and child acceptance of food during diarrhea, convalescence, and health in the central Sierra of Peru.
Authors: Bentley M E , Stallings R Y , Fukumoto M , Elder J A
Published: November 2008

Feeding patterns by mothers and child acceptance of food were measured in a Peruvian village to determine changes on days when children had diarrhea as compared to days of convalescence and health. Morbidity surveillance identified 40 children, aged 4-36 months, with diarrhea. Children were followed using twelve-hour in-home structured observations during two to four days each of diarrhea, convalescence, and health. Using scales of maternal encouragement to eat and child acceptance of food and cumulative logistic regression analyses, maternal encouragement to eat decreased significantly during convalescence compared to diarrheal days (OR: 0.54, 90% CI: 0.35, 0.82) and health compared to diarrhea (OR: 0.65, 90% CI: 0.46, 0.93). In contrast, child acceptance of food increased during health compared to diarrhea (OR: 1.55, 90% CI: 1.02, 2.35). Results illustrate the importance of carefully examining the behavioral aspects of nutritional intake. Decreases in intake during diarrhea are due to anorexia and not withdrawal of food by mothers. In response to reductions in child appetite during illness, mothers are more likely to encourage children to eat, while they tend to become more passive feeders after the diarrhea has stopped. Program efforts should focus on messages to feed children more actively especially after diarrhea episodes, when appetite levels increase.