IHIS Online Data Analysis System

This system uses high-speed tabulation software developed at UC-Berkeley's Computer-assisted Survey Methods Program. We welcome feedback on any aspect of the system.

On the right frame of the following screen you will need to specify the following:

  • a row variable
  • a column variable
  • any "filters": filters can optionally be used to include only certain cases in your analysis
  • any "controls": controls can optionally be used to produce a separate table for each category of a variable
  • weights: Please consult the variable description to determine the correct weight to use with any given variable. Because the National Health Interview Survey uses a complex sampling design with oversampling of some population sub-groups, weights must be used to produce accurate population-level results.

Examples and screenshots are available in our instructions page.

We strongly advise opening the IHIS website in another browser and consulting variable descriptions as you use the tabulator.

Click below to get started with online data analysis!

Analyze by Sample

1969 1970
1971
1972
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1974
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Datasets for 1997 forward