California Health Interview Survey


 Join our Newsletter


Join Our Newsletter

A monthly e-mail of breaking news, data, and publications from the Center.

print share

 CHIS is an AAPOR TI Charter Member


CHIS is publicly recognized as a Charter Member of the AAPOR Transparency Initiative. The certification signifies a commitment to transparent survey research practice and effective disclosure of research methods.

CHIS Methodology Explained

Download detailed methodology reports, briefs, and technical papers.

See the questions we ask and access technical documents. See what health topics we investigate each cycle.

Learn about the CHIS sample and view sample sizes by county, race, and ethnicity.

Understand how CHIS maintains the high quality of its data.

Methodology Redesign​

Learn about how CHIS is reinnovating itself for the future with a redesigned methodology for CHIS 2019-2020 and beyond.