California Health Interview Survey

 

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 CHIS 2015 is here!

 
CHIS interviewed 21,444 households in 2015, including 21,034 adults, 754 teens and 2,157 children. New topics in the 2015 survey include discrimination in getting medical care, use of telemedical care, teen psychological distress, and much more!
 
Find health statistics by state, county, region and Los Angeles and San Diego service areas using our free, user-friendly web tool AskCHIS.
 
Find health statistics by ZIP code, legislative district or city using AskCHIS Neighborhood Edition.
 
Learn more about CHIS 2015.
 

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

CHIS 2013-2014

CHIS 2011-2012

CHIS 2009

CHIS 2007

CHIS 2005

CHIS 2003

CHIS 2001