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  • Our search indexes the full documentation for datasets, including descriptions of the variables.
  • You can search for multiple keywords:
    income health china
  • Use quotes to search for an exact match:
    "income distribution"
  • All studies are described using terms from the ICPSR Subject Thesaurus; these terms will appear as "Subject" filters on the left side of the results page.

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Topics / Series / Thematic data collections / Global data

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10,500+ studies

5,000,000 variables

75,000 publications

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Most Downloaded

  1. National Longitudinal Study of Adolescent to Adult Health (Add Health), 1994-2008 [Public Use]
  2. National Health and Nutrition Examination Survey (NHANES), 2005-2006
  3. India Human Development Survey-II (IHDS-II), 2011-12
  4. National Health and Nutrition Examination Survey (NHANES), 2007-2008
  5. Maternal Lifestyle Study in Four Sites in the United States, 1993-2011
  6. Youth Development Study, 1988-2011 [St. Paul, Minnesota]
  7. National Health and Nutrition Examination Survey (NHANES), 2003-2004
  8. India Human Development Survey (IHDS), 2005
  9. National Health and Nutrition Examination Survey (NHANES), 2001-2002
  10. Uniform Crime Reporting Program Data [United States]: 1975-1997

Restricted-Use Data

The vast majority of ICPSR data holdings are public-use files with no access restrictions. ICPSR ensures respondent confidentiality within these datasets.

Sometimes the protective measures taken to reduce disclosure risk would significantly degrade the research potential of the data. In these cases, ICPSR provides access to restricted use versions that retain confidential data by imposing stringent requirements for accessing them.
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Countries Using Our Data

  1. United States
  2. China
  3. United Kingdom
  4. India
  5. Canada
  6. South Korea
  7. Germany
  8. Australia
  9. Philippines
  10. Japan