Add Health provides users with large and complex longitudinal data sets. Below is a list of resources available to Add Health researchers to aid in understanding the study design, data, and how to analyze the data.

Study Design

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

Add Health Navigator

Metadata discovery tool to explore wave to wave variable comparison for Waves I-V interview/survey, parent, and in-school data and to search and create custom codebooks for all restricted data.

User Guides

Detailed guides to assist researchers with understanding the data sets and performing unbiased analyses.

Add Health Codebook Explorer (ACE)

Interactive tool to browse questions by topic or search for questions by variable name, keyword, or phrase in order to discover the data collected during Waves I-IV interviews by Add Health.


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

Frequently Asked Questions

Browse questions and answers pertaining to general information, field work, data sets and contracts.

Restricted-Use Datasets Index

Index of released restricted-use datasets alphabetically by wave.