The California Health Interview Survey (CHIS) has released statewide one-year public use data files for 2011 and 2012. Researchers can now analyze and compare comprehensive health data for adults, adolescents and children in California on hundreds of health topics ranging from health insurance coverage to diabetes prevalence to fast food consumption over four consecutive years: 2011, 2012, 2013 and 2014. The 2013 and 2014 one-year files were released in September 2015.
Previously released as a combined two-year file, the unbundling of 2011 and 2012 annual data lets researchers and other users with statistical analysis software compare statewide health variables from year to year, such as comparing rates of health insurance before and after full implementation of the Affordable Care Act.
One-year estimates are also available through the award-winning, simple-to-use online query tool, AskCHIS©.
For those who prefer to use two-year data, the 2013-2014 dataset is available on request as a Special Use Research File (SURF). These two-year SURFs are available for 2011-2012 and 2013-2014. Access to the files can be obtained by a SURF application.
Coming Soon: The estimates available on AskCHIS Neighborhood Edition© (NE), which provides health estimates at the ZIP code, city and legislative level, will be updated using new CHIS 2013-2014 data. NE will also launch a subscription-based application program interface (API) to expand access to the unique local population health estimates it provides.
CHIS is conducted by the UCLA Center for Health Policy Research and is the largest state health survey in the nation. It surveys more than 20,000 households each year and covers hundreds of health topics, including health status, health conditions, health behaviors, mental health, health insurance coverage, and health care access and utilization by race/ethnicity, gender, income and more.
About the UCLA Center for Health Policy Research
The UCLA Center for Health Policy Research (CHPR) is one of the nation’s leading health policy research centers and the premier source of health policy information for California. UCLA CHPR improves the public’s health through high quality, objective, and evidence-based research and data that informs effective policymaking. UCLA CHPR is the home of the California Health Interview Survey (CHIS) and is part of the UCLA Fielding School of Public Health. For more information, visit healthpolicy.ucla.edu.