News and Announcements 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.
