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Linked Birth/Infant Death Period Data, 1995: [United States, Puerto Rico, Virgin Islands, and Guam] (ICPSR 2285)

Principal Investigator(s):


This data collection consists of six data files, which can be used to determine infant mortality rates in the United States in 1995. For the first time, data for Puerto Rico, the Virgin Islands, and Guam were included. Another change in 1995 is a change in format of the linked files. They are now released in two different formats, period data and birth cohort data. This collection represents the period data. Parts 1 and 2 are the Denominator files for the United States and for Puerto Rico, the Virgin Islands, and Guam, respectively. These files consist of all births in 1995. Variables in these files include year of birth, state and county of birth, characteristics of the infant (age, sex, race, birth weight, gestation), characteristics of the mother (Hispanic origin, race, age, education, marital status, state of birth), characteristics of the father (Hispanic origin, race, age, education), pregnancy items (prenatal care, live births), and medical data. A new variable in the Denominator files for 1995 is clinical estimate of gestation. Parts 3 and 4 are the Numerator files. They provide records of all infant deaths that occurred in 1995 linked to their corresponding birth certificates, whether the birth occurred in 1995 or 1994. Variables in these files include age at death, underlying cause of death, autopsy, place of accident, infant death identification number, exact age at death, day of birth and death, and month of birth and death. New variables in the linked Numerator files for 1995 include a weight and a clinical estimate of gestation. Parts 5 and 6 are the "unlinked" files. They consist of infant death records that could not be linked to their corresponding birth records.

Series: Linked Birth/Infant Death Data Series

Access Notes

  • These data are available only to users at ICPSR member institutions. Because you are not logged in, we cannot verify that you will be able to download these data.


WARNING: This study is over 150MB in size and may take several minutes to download on a typical internet connection.

DS0:  Study-Level Files
DS1:  Denominator File for the United States: Births - Download All Files (809.5 MB) large dataset
DS2:  Denominator File for Puerto Rico, Virgin Islands, and Guam: Births - Download All Files (23.4 MB)
DS3:  Numerator File for the United States: Linked Births and Deaths - Download All Files (24.1 MB)
DS4:  Numerator File for Puerto Rico, Virgin Islands, and Guam: Linked Births and Deaths - Download All Files (9.5 MB)
DS5:  Unlinked File for the United States - Download All Files (9.4 MB)
DS6:  Unlinked File for Puerto Rico, Virgin Islands, and Guam - Download All Files (9.1 MB)

Study Description


United States Department of Health and Human Services. National Center for Health Statistics. Linked Birth/Infant Death Period Data, 1995: [United States, Puerto Rico, Virgin Islands, and Guam]. ICPSR02285-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2009-02-25. http://doi.org/10.3886/ICPSR02285.v1

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Scope of Study

Subject Terms:   birth, birth rates, birth records, causes of death, death records, infant mortality, live births, medical records, parents, pregnancy, prenatal care, reproductive history, vital statistics

Geographic Coverage:   Global, Guam, United States, Virgin Islands of the United States

Time Period:  

  • 1995

Date of Collection:  

  • 1995

Data Types:   administrative records data

Data Collection Notes:

Per agreement with NCHS, ICPSR distributes the data file(s) and text of the technical documentation for this collection as prepared by NCHS.


Data Source:

birth and death certificates

Restrictions: In preparing the data file(s) for this collection, the National Center for Health Statistics (NCHS) has removed direct identifiers and characteristics that might lead to identification of data subjects. As an additional precaution NCHS requires, under Section 308(d) of the Public Health Service Act (42 U.S.C. 242m), that data collected by NCHS not be used for any purpose other than statistical analysis and reporting. NCHS further requires that analysts not use the data to learn the identity of any persons or establishments and that the director of NCHS be notified if any identities are inadvertently discovered. ICPSR member institutions and other users ordering data from ICPSR are expected to adhere to these restrictions.


Original ICPSR Release:  

Version History:

  • 2006-01-18 File CB2285.ALL.PDF was removed from any previous datasets and flagged as a study-level file, so that it will accompany all downloads.

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