Integrated Health Interview Series

The Integrated Health Interview Series (IHIS) has recently released 4000 new harmonized variables from the U.S. National Health Interview Survey (NHIS) from 1969 to 2009 (at http://www.ihis.us ). Funded by NIH and carried out at the Minnesota Population Center, the IHIS project is designed to make it easier for researchers to access and use multiple years of U.S. national survey data on health status, health behaviors, and health care by consistently coding and fully documenting variables across time. IHIS data are disseminated for free through a Web-based extraction system that allows researchers to create a customized file with only the years and variables they need. Recently added topic areas include survivorship of survey respondents, child and adult mental health, cancer family history, adult physical activity, and use of complementary and alternative medicine by children and adults.

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