Did you know?
CHIS constantly seeks to enhance the representativeness of its survey. Beginning in 2007, CHIS includes a sample of cell-phone-only households - often younger and more mobile Californians frequently overlooked in land-line surveys. Such innovations help CHIS users learn more about an important sub-section of California's changing population.
Survey Methodology:
As the largest state health survey in the nation covering dozens of health topics, CHIS is grounded in a rigorous methodology. Learn more about CHIS survey methods in the following methodology briefs, reports and papers:
Methodology Briefs:
Written by the CHIS team to address specific methodological issues inquired by CHIS data users in a concise format.
Methodology Reports:
Authored by our contract research organization, Westat, Inc., and provide an in-depth description of the survey methodologies.
Methodology Papers:
The product of research projects conducted by the CHIS team examining the quality of CHIS data and the possibility of its improvement.
