California Health Interview Survey (CHIS)
The California Health Interview Survey (CHIS) is a telephone survey that provides population-based, standardized health-related data from households selected from all 58 counties in the state. CHIS was fielded for the first time as a biennial survey in 2001 and then moved to a continuous survey starting in 2011. The survey is designed to provide information on:
- the health of California’s adults and children, including physical and mental health status, prevalence and management of chronic diseases, diet, exercise, tobacco use, and sun exposure;
- health insurance coverage, access to preventive and other health services, and barriers to use of health services; and
- eligibility for and participation in state health programs.
NCI provided funding to field cancer control items on CHIS in 2001, 2003, 2005, 2007, 2009, and 2011-2012. The questions included in these survey years covered topics including cancer risk factors, cancer screening behaviors, and cancer diagnosis. The CHIS cancer control questions are comparable to the Cancer Control Supplement questions of the National Health Interview Survey. Data are reported for most counties and the largest cities in the state, and are therefore useful for estimating at the local level. Because racial and ethnic subpopulations are so well represented in California, CHIS enables investigators to better estimate health-related behaviors, use of health services, and cancer risk factors in these groups. Groups of particular interest include African-Americans, Latinos and Hispanics, American Indians and Alaska Natives, and Asian-Americans and Pacific Islanders.
CHIS is led by the UCLA Center for Health Policy Research
. CHIS data and questionnaires are available on their website