June 9, 2009
The 1982 National Survey of Family Growth has been re-released and is now available for download from ICPSR. Users should also note that the Survey Documentation Analysis (SDA) application for the study has been updated to reflect corrections to the data set. Questions regarding the update may be sent to ifss@icpsr.umich.edu

April 10, 2009
Erratum: An error has been identified in the 1982 National Study of Family Growth. The variable F9, mother's main occupation when respondent was of ages 5 to 15, should contain a three-digit Census occupation code for the respondent's mother, but an error in processing truncated the variable to two digits. The dataset will be re-released in the near future with corrected data.

January 15, 2009
Standardized versions of all IFSS component surveys have been publicly released and are available under the "Data and Documentation" section. The harmonization process is now underway.

The Integrated Fertility Survey Series (IFSS) is a project of the Population Studies Center and the Inter-university Consortium for Political and Social Research at the University of Michigan. With funding from the Eunice Kennedy Shriver National Institute for Child Health and Human Development (NICHD, grant #5R01 HD053533), our goal is to provide researchers, educators, students, policy makers, and others with a data resource to examine issues related to families and fertility in the United States spanning five decades.

IFSS provides access to ten individual national studies of fertility encompassing the Growth of American Families (GAF), National Fertility Surveys (NFS), and National Surveys of Family Growth (NSFG) as well as a single dataset composed of harmonized variables across all ten surveys. Analytic tools make it possible to quickly and easily explore the data and obtain information about changes in behaviors and attitudes across time.

This project is consistent with the continuing mission of the Demographic and Behavioral Sciences Branch (DBSB) of the NICHD with respect to research on fertility, the family, and family planning. The IFSS provides a national resource that enhances knowledge about reproductive health, contraceptive use, pregnancy, and other issues vital to understanding and tracking the health of the population.