Pooling CHIS Data

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Pooling CHIS Data

The California Health Interview Survey (CHIS) was conducted as a biennial survey from 2001 through 2009. Beginning in 2011, CHIS data have been collected continuously across a two-year data collection cycle. Continuous data collection allows for the release of one-year data files and estimates for each calendar year. The following sections provide general guidelines for producing estimates and testing hypotheses with pooled/combined data from one-year public use adult data files (PUFs). To download these guidelines, please refer to Pooling CHIS Data.

You can download CHIS one-year public use data files here: http://healthpolicy.ucla.edu/chis/data/Pages/public-use-data.aspx.

Sample Code to Pool Multiple Cycles of CHIS Data