Did you know?
CHIS 2007 surveyed 53,611 households, including 51,048 adults, 3,638 adolescents and 9,913 children. The survey includes significant samples of Latino, Asian, American Indian and Pacific Islander groups and subgroups, including Chinese, Filipino, Guatemalan, Japanese, Korean, Mexican, Salvadoran, South Asian and Vietnamese respondents. Read more about our Sample Design.
What is CHIS?
CHIS is the nation's largest state health survey. Conducted every two years on a wide range of health topics, CHIS data gives a detailed picture of the health and health care needs of California's large and diverse population.
The survey provides:
- Statewide information on the overall population including many racial and ethnic groups.
- Local-level information on most counties for health planning and important comparison purposes.
The survey uses a strict methodology and extensive questionnaires.
CHIS 2009 is currently underway.
CHIS 2007 surveyed more than 51,000 adults, more than 13,000 teens and children and more than 53,000 households, with oversampling of Los Angeles and San Diego Counties.
CHIS 2005 surveyed more than 45,000 households and expanded the number of individually represented California counties from 33 to 41 (with the remaining smaller counties grouped into three strata).
CHIS 2003 surveyed more than 42,000 households and had the added dimension of housing and neighborhood information.
CHIS 2001 - the first survey - collected information from more than 55,000 households.
CHIS is conducted by the UCLA Center for Health Policy Research in collaboration with the California Department of Public Health, the Department of Health Care Services and the Public Health Institute.
Funding for CHIS comes from state and federal agencies and from several private foundations.
The California Health Interview Survey is based in Los Angeles, CA at the UCLA Center for Health Policy Research, the premiere source of health policy information for California and one of the nation's leading health policy research centers.
