National Health Interview Survey

The National Health Interview Survey logo shows the outline of a house with three people and a data trend line inside.
About NHIS
Learn about the nation's largest and oldest household health survey
Learn More
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Welcome to the National Health Interview Survey
Find out about participating if you are invited to join NHIS
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About the Data
Access data files, questionnaires, and documentation for research and analysis
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Publications
Read our expert analysis of NHIS data and statistics

NHIS statistics

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Data Query Systems
Dashboards featuring NHIS data
Early Release Program masthead with NHIS logo of a house with three people and a data trend line inside
Early Release Program
Preliminary NHIS data on current topics
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NHIS-Teen
The NHIS survey that collects data about teens from teens

Featured resources

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2019 NHIS Questionnaire Redesign
NHIS updated the survey to meet new and changing health information needs

What's New