National Addiction & HIV Data Archive Program

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      income health china
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      read newspapers, political party, volunteer access to water drug use, probation, education diet, body mass, difficulty walking
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    • You can also search for multiple keywords:
      income health china
    • Use quotes to look for a phrase. (I.e., words in that precise order)
      "income distribution"
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      "World Values Survey" "Jon D. Miller" Afrobarometer

Find Data

Most datasets in NAHDAP are primary data collected from surveys and interviews or obtained from administrative databases. NAHDAP preserves and disseminates them because they have value for "secondary analysis" - that is, reexamining existing data to reproduce original findings, address new questions, or employ new analytic methods.

Browse for Data

Access to Data

Since NAHDAP is sponsored by the National Institute on Drug Abuse (NIDA), a federal agency, users obtain data from NAHDAP at no charge. To access data files, users must login to ICPSR with an ICPSR MyData account or an existing Google or Facebook account.

Restricted Data

Please note that approximately 25% of NAHDAP's studies contain confidential data and are not available for Web download. Instructions on how to obtain those datasets are provided atop the study home page under "Access Notes." You will be required to obtain Institutional Review Board (IRB) approval for your project.

For more information about accessing restricted-use data, see Instructions for Access to Restricted-Use Data. Also view the Find and Apply for Restricted Data Using the IDARS System tutorial to see step by step instructions and read answers to commonly asked questions.

ICPSR Member-Only Data

Some data listed on the NAHDAP website are available only to persons at ICPSR member institutions.

Documentation

In almost all cases, documentation files, such as codebooks, questionnaires, and user guides, are freely available and do not require authentication.

Additional Data Resources

Free Statistical Software