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About Restricted-Use Contractual Data

The more extensive restricted-use data, available by contractual agreement, will be distributed only to certified researchers who commit themselves to maintaining limited access. To be eligible to enter into a contract, researchers must have an IRB-approved security plan for handling and storing sensitive data and sign a data-use contract agreeing to keep the data confidential. Contractual data are provided in separate, linkable datasets and contain a hidden signature identifying the purchaser.

Following is a list of the restricted-use datasets. For detailed descriptions of these datasets, go to Dataset Descriptions.

  • Wave I Adolescent In-Home Interview with AHPVT, Parent In-Home Questionnaire, and Adolescent In-School Questionnaire data attached
  • Adolescent In-School Questionnaire
  • Wave I, II School Administrator Questionnaire
  • Wave II In-Home Interview
  • School Information Data
  • Wave III In-Home Interview, with field interviewer characteristics and STD assay results
  • Wave IV In-Home Interview, with field interviewer characteristics
  • Weights: Wave I, II, III, IV In-Home Grand Sample Weights, School Administrator Weights, In-School Weights, Add Health School Weights
  • Weight Components: Wave I, II, III, IV In-Home Weight Components, In-School Weight Components


The following constructed datasets are available:

  • In-School Network Data
  • Wave I Adolescent Pair Data
  • Wave I, II, III Respondent Grouping File
  • In-School Friendship Nominations
  • Wave I, II In-Home Friendship Nominations
  • Wave I, II, III Contextual Data
  • Wave I, II, III Political Context Data
  • Wave I, II, III Disposition Data
  • Wave I Spatial Analysis Data
  • Wave III Friend ID Numbers
  • Wave III Sibling ID Numbers
  • Wave III Full Sib/Twin DNA Results
  • Wave III Urinalysis Data
  • Wave III ASHA Data
  • Wave III HPV MGEN Results
  • Wave III Alcohol Outlet Density
  • Education Data
  • Wave I, III Obesity and Neighborhood Environment Data (ONE)
  • Wave III, IV Region
  • Wave IV Constructed Variables
  • Wave IV Consent
  • Wave IV Prescription Medication Use
  • Wave IV DNA Results
  • Wave IV Measures of Glucose Homeostasis
  • Wave IV EBV and CRP Results
  • Wave IV Lipids Results


Getting Restricted-Use Contractual Data

Add Health restricted-use data are available from the Inter-University Consortium for Political and Social Research (ICPSR) under the auspices of the Data Sharing for Demographic Research (DSDR) archive.  Restricted-use data are available by contractual agreement only.  Contract application materials and forms are available on the DSDR website.  If you would like to initiate a new Add Health restricted-use data contract or renew or modify a current contract, please contact DSDR.

Beginning May 5, 2014, the Carolina Population Center at UNC Chapel Hill will manage all Add Health restricted-use contracts.