National Survey of Family Growth, Cycle II, 1976: Interval File (ICPSR 08181)

Alternate Title:  1976 NSFG: Interval File

Principal Investigator(s):


This data collection contains detailed information collected from 8,611 respondents about their pregnancy histories, including the date, outcome, and order of all pregnancies, whether they were single or multiple births, sex and weight of infants, mortality, breastfeeding of infants, and information on the respondent's residence, periods of non-intercourse, contraceptive methods used, and regularity of use. Other information about the respondents can be found in NATIONAL SURVEY OF FAMILY GROWTH, CYCLE II, 1976: COUPLE FILE (ICPSR 7902). In addition, the Couple File contains summary measures of fertility derived from this data collection.

Series: National Survey of Family Growth (NSFG) Series

Access Notes

  • These data are freely available.

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    This study is provided by ICPSR. ICPSR provides leadership and training in data access, curation, and methods of analysis for a diverse and expanding social science research community.


National Survey of Family Growth, Cycle II, 1976: Interval File, Dataset 0001 - Download All Files (27.736 MB)

Study Description


United States Department of Health and Human Services. National Center for Health Statistics. National Survey of Family Growth, Cycle II, 1976: Interval File. ICPSR08181-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2008-10-27.

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Scope of Study

Subject Terms:   adoption, birth, birth expectations, birth control, breast feeding, families, family planning, family size, fertility, pregnancy, reproductive history, womens health care

Geographic Coverage:   United States

Time Period:  

  • 1976

Date of Collection:  

  • 1976-01--1976-09

Unit of Observation:   individual

Universe:   Women living in the coterminous United States, aged 15-44 years inclusive, who were either currently married, previously married, or never married but had offspring presently living in the household.

Data Types:   survey data

Data Collection Notes:

(1) Data for CYCLE I, 1973 (ICPSR 7898), CYCLE II, 1976: COUPLE FILE (ICPSR 7902), CYCLE III, 1982 (ICPSR 8328), CYCLE IV, 1988 (ICPSR 9473) and 1990 (ICPSR 6643), CYCLE V, 1995 (ICPSR 6960), and CYCLE VI, 2002 (ICPSR 4157) are also available from ICPSR. (2) Dates in this dataset are often given as century months. For more detailed information on how century months are calculated please see the "Date Codes" section of the codebook.


Sample:   A multistage probability sample of women from approximately 33,000 households.

Data Source:

personal interviews

Response Rates:   The sample consisted of 10,202 eligible women of whom 8,611 completed extended interviews yielding a response rate of approximately 84 percent.

Extent of Processing:  ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection:

  • Created online analysis version with question text.


Original ICPSR Release:  

Version History:

  • 2008-10-27 This study has been updated to include SAS, SPSS, and Stata setup files as well as SAS transport, SPSS system, and Stata system files.

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