Integrated Fertility Survey Series (IFSS) announces third data release and new variable filters

The Integrated Fertility Survey Series (IFSS) project at ICPSR is pleased to announce the release of its third harmonized dataset, adding pregnancy summary variables and variables related to adoption and non-biological children to previously harmonized sociodemographic and union history variables. The dataset combines information from 10 surveys and over 71,000 respondents spanning 1955 to 2002 into harmonized variables for easy analysis. 

We have also updated the Harmonized Data Extracts page, adding the option to filter the variables by availability in multiple years, by variable group, and by search terms.

The third release data are available for download on the Data and Documentation page, can be explored and extracted from the Harmonized Data Extracts page, and can be analyzed online using SDA.

Please note that all IFSS data releases are beta versions provided for users to begin using the data before the final version is released in late 2012. As such, they are subject to change and may contain small inconsistencies. If you notice any problems with the data, please contact the IFSS team at so that we may fix them.

Apr 26, 2011

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