California Health Interview Survey

 

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AskCHIS​ is a free online tool that enables you to search for health statistics on your county and state.

 

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Welcome to CHIS

The California Health Interview Survey (CHIS) is the nation's largest state health survey and a critical source of data on Californians as well as on the state's various racial and ethnic groups. Policymakers, researchers, health experts, members of the media and others depend on CHIS for credible and comprehensive data on the health of Californians.

 

 About CHIS

Policymakers, researchers, health experts, members of the media and others depend on the California Health Interview Survey (CHIS) for credible and comprehensive data on the health of Californians. Learn more about who and where CHIS interviews, survey topics, our partners, funders and more in About CHIS.

 

Survey Design & Methods

Learn about CHIS methodology, questionnaires, sample design by county and race, survey topics, as well as the populations surveyed. Learn more.

 

    Get CHIS Data

Learn how to quickly get CHIS data through our free, easy-to-use AskCHIS Web tool. Download free public used data files or apply to use sensitive data through our Data Access Center (DAC). Learn more.

 

 Publications

Read published reports, policy briefs and fact sheets. See peer-reviewed journal articles or view current CHIS research projects. Learn more.