DOI: 10.3886/icpsr03875.v1
title: National Immunization Survey (NIS), 1995
title: Version 1

description: This survey is the first in a series that was designed to
 track the rates of proper vaccination of children in the United States.
 The target age range for the children was 19 to 35 months. Respondents
 were queried on the number of children present in the household between
 the ages of 12 months and 3 years, those children's dates of birth,
 their sex, whether there were vaccination records for the children,
 whether those records were accessible, whether the respondent was the
 adult in the household most knowledgeable about the vaccinations, and
 whether the respondent accompanied the children to more than 50 percent
 of their vaccinations. For each child in the household, information was
 gathered on whether each child had received all of the recommended
 vaccinations, and the number of the diphtheria-tetanus-pertussis shots
 (DTP or DT), polio vaccinations, measles vaccinations, meningitis or
 Haemophilus Influenzae type B (HIB) shots, and hepatitis B (Hep B) shots
 each child had received. Further information was obtained about
 additional vaccinations the child may have received to combat diseases
 such as tuberculosis, typhoid, yellow fever, and malaria, the child's
 health care providers, the number of doctors that had performed
 vaccinations, and whether the measles vaccination was strictly for
 measles or for the measles-mumps-rubella (MMR) combination. Once
 parental consent was obtained, health care providers were queried on the
 vaccination records for each child whose vaccination information was
 gathered from parents. Health care providers were queried on the type
 and the level of detail of the vaccination records for each child, the
 dates and types of vaccinations administered, the date of each child's
 first visit to that provider regardless of reason, the date of the
 child's most recent visit to that provider regardless of reason, and the
 type of care the provider gave to the child. Health care provider
 respondents were asked to describe their facility, to give their
 position within the facility, the child's date of birth according to
 their records and whether the child was known by another last name, and
 to provide a list of any additional health care providers for that
 child. Demographic information provided by the parents or guardians
 includes the number of people living in the household, the number of
 people over and under 18 in the household, ethnicity of the child and
 respondent, marital status of the respondent, respondent's relationship
 to the child, respondent's education level or that of the child's
 mother, household income, and whether the child was living at the same
address as when he or she was born.
description: The National Immunization Survey uses a random-digit-dialing
 (RDD) telephone survey to identify households containing children in the
 target age range and to interview an adult who is knowledgeable about
 the child's vaccinations. With the consent of the child's parent or
 guardian, the National Immunization Survey also contacts (by mail) the
 child's health care providers to request information on vaccinations
 from the child's medical records. Samples of telephone numbers are drawn
 independently, for each calendar quarter, within 78 Immunization Action
 Plan (IAP) areas. Of the 78 IAP areas, 28 (including the District of
 Columbia) are urban areas. The remaining 50 are either an entire state
 or a "rest of state" IAP area (where the state contains one or more
 urban IAP areas). The target sample size in each IAP area is designed to
 achieve an approximately equal number of children with completed
telephone interviews in all 78 IAP areas.
description: Datasets: 
DS1: National Immunization Survey (NIS), 1995
description: The target population for the National Immunization Survey
 is children aged 19 to 35 months living in the United States at the
time of the interview.
description: (1) Any published material derived from these data
 should acknowledge the Centers for Disease Control (CDC), National
 Center for Health Statistics (NCHS), and the National Immunization
 Program (NIP) as the original data source and use "NIS" in the title or
 as a keyword in the abstract. (2) Per agreement with NCHS, ICPSR
 distributes the data file and technical documentation in this collection
 in their original form as prepared by NCHS. (3) The codebook is provided
 by ICPSR as a Portable Document Format (PDF) file. The PDF file format
 was developed by Adobe Systems Incorporated and can be accessed using
 PDF reader software, such as the Adobe Acrobat Reader. Information on
 how to obtain a copy of the Acrobat Reader is provided on the ICPSR Web
site.