DOI: 10.3886/icpsr09473.v2
title: National Survey of Family Growth, Cycle IV, 1988
title: Version 2

description: The National Survey of Family Growth (NSFG) Cycle IV interviews covered respondents' pregnancy histories, past and current use of contraception, ability to bear children, use of medical services for family planning, infertility, and prenatal care, marital histories, and associated cohabiting unions. Data on occupation and labor force participation and on a wide range of social, economic, and demographic characteristics are also presented. Cycle IV added questions about AIDS and cohabitation and asked detailed questions on adoption and sexually transmitted diseases.
description: 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 variable labels and/or value labels.; Created online analysis version with question text.; Checked for undocumented or out-of-range codes..
description: Datasets: 
 
 DS0: Study-Level Files 
 DS1: Respondent File 
 DS2: Interval File
description: National Survey of Family Growth (NSFG) Series
description: face-to-face interview 
The original hierarchical data collection had two types of records. There was one respondent record for each of the 8,450 women in the survey. These records included most of the information from the interview and contain approximately 1,330 variables. Following each woman's respondent record were the interval records, one for each of her closed pregnancy intervals (completed pregnancies) yielding approximately 180 variables in each interval record cover information about the characteristics of each pregnancy and any contraceptive methods used during that interval. The hierarchical files have, however, been replaced by two rectangular ASCII files (respondent and interval).
Data for CYCLE I, 1973 (ICPSR 7898), CYCLE II, 1976 (ICPSR 7902, 8181), CYCLE III, 1982 (ICPSR 8328), CYCLE IV, 1990 TELEPHONE REINTERVIEW (ICPSR 6643), and CYCLE V, 1995 (ICPSR 6960), and CYCLE VI, 2002 (ICPSR 4157) are also available from ICPSR.
The following codes are undocumented for variable A_4 (State where R was born: 227, 318, 395, 407, 593, 775, 886).
Due to certain Stata restrictions some value labels were omitted from the data collection. For variables CJAN84 thru CAUG88 and METHCAL, value labels for codes 170-1369 (simultaneous method use) and 8170-9369 (sequential method use) are not given. Please see appendix 4 "Simultaneous and Sequential Method Use" for further information on the coding of these variables.
The following codes are undocumented for variable F_70 (Current/last occupation): 246, 460, 760, 761, 994.
The following codes are undocumented for variable F_72 (Current/last business or industry): 8, 19, 83, 406, 407, 416, 668, 837.
The following codes are undocumented for variable F_88 (Husbands/partners current/last occupation): 110, 431, 660, 800, 994.
The following codes are undocumented for variable F_90 (Current/last business or industry): 407 and 633.
The variable BOX45_46 is undocumented in the original codebook. BOX45 and BOX46 both appear in the original questionnaire (Does R intend to have [more] babies? 1 -- Yes, 2 -- No, 8 -- Don't know), however they are not present in the codebook frequencies or the file index.
Part 1: The variable label for C31M3 and the value labels associated with missing data codes for several variables have been updated.
description: Data have been weighted to be representative of the noninstitutionalized population of women in the United States, 15-44 years of age, regardless of marital status. Black women were oversampled in order to yield reliable estimates by race.
description: The 8,450 women interviewed for the NSFG, Cycle IV, were drawn from households in which someone had been interviewed for the National Health Interview Survey (NHIS), between October 1985 and March 1987.