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Key Resources

User Guides

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

Codebooks

PDF codebooks for coding responses and documenting the layout and code definitions of the data files.

Add Health Navigator

Metadata discovery tool to explore and create custom codebooks, as well as provide a wave to wave variable comparison for Waves I-VI.

Public-Use Data Sets

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

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.

Ancillary Studies

Submit an application to add new contextual or biological data to the Add Health data sets, including data linkages.

February 22, 2021

New Data Release from Add Health

The following data are now available to Add Health contract researchers. HUD-Assisted Housing Supplemental Data. The supplementary data-file identifies Add Health respondents who lived in...
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Gut bacteria
January 7, 2021

New study finds a link between premature aging and gut bacteria using Add Health Wave V data

Linkages between microbiota and physiologic aging and age-related disease have typically been examined in older adults.  However, recent evidence indicates biological aging likely begins as...
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student in wheelchair receives a diploma from a university. disabled girl with a diploma from school and university.
June 26, 2020

Researchers use Add Health data to discover connections between chronic medical conditions and the importance of belonging

Students with chronic medical conditions struggle with more than just their physical health. The hurdles formed from medical conditions impact their school attendance, concentration, and...
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