California Health Interview Survey

 

 Join our Newsletter

 

Join Our Newsletter

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

Join
print share
 

 Hundreds of health statistics

 
CHIS has released new 2016 data, including hundreds of new health estimates on topics ranging from health insurance coverage, to diabetes and obesity, to junk food consumption, to mental health. 
 
Learn more about our sample and the questions we ask.
 

Sample Design

Overview

The California Health Interview Survey (CHIS) is a telephone survey that uses a dual-frame random-digit-dial (RDD) technique. By using traditional landline RDD and cell-phone RDD sampling frames, it is representative of the state's population. A supplemental surname list frame is used to ensure representation of the Korean and Vietnamese households.

Geographic groups

CHIS data can be analyzed at the county level for the state's 41 most populated counties. The remaining 17 counties are combined into three different groups. See sample design summaries below. 

Age groups

CHIS asks questions that are shared across age groups and also some questions that are unique to only one age group: children (0-11 years of age), adolescents (12-17 years of age), and adults (18 years and older).

Race/ethnicity groups

With a large sample of a diverse population, CHIS data have great ability to report on racial/ethnic differences.

CHIS 2015-2016

CHIS 2013-2014

CHIS 2011-2012

CHIS 2009

CHIS 2007

CHIS 2005

CHIS 2003

CHIS 2001