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News and Announcements

July 22, 2026

Parent Set Bedtimes and Cardiovascular Disease Risk: Evidence from the Add Health Study

Previous research shows that parent-set bedtimes help lower adolescents’ risk of important cardiovascular disease (CVD) risk factors. However, there is a gap in the research...
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July 16, 2026

Society for Prevention Research data challenge competition features Add Health

Each year at their annual meeting, the Society for Prevention Research (SPR) sponsors a friendly competition among teams of early-career researchers. Named for two of...
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July 7, 2026

Persistent Infections and Biological Aging: Evidence from the Add Health Study

Widespread persistent infections have been found to elicit chronic immune activation, with implications for the body’s immune system and biological functions as people age. Using...
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Key Resources

Study Documentation

Detailed documentation designed to help users understand the study design, methodology, data sets, and guidelines for analyzing the data.

Data Documentation

A comprehensive resource that catalogs all available datasets, including file details, access information, data user guides and codebooks defining variables and data layout.

Add Health Codebook Explorer

Use the Add Health Codebook Explorer (ACE) to view questions asked of respondents, parents, and interviewers during the In-School and In-Home interviews in Waves I through V.

Public-Use Data Sets

Access and download the public use codebooks and data sets which contain a reduced sample size (Waves I-VI).

Restricted-Use Data Sets

Access the data sets available via restricted-use contract, renew contract, add researchers, and transfer or terminate contract. Data linkages are not allowable with a restricted-use contract.

Study Design

Documentation detailing the study design of each wave of data collection, including sampling and fieldwork information.

Add Health