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The following PLCO Questionnaires dataset(s) are available for delivery on CDAS. For each dataset, a Data Dictionary that describes the data is publicly available. In order to obtain the actual data in SAS or CSV format, you must begin a data-only request. Data will be delivered once the project is approved and data transfer agreements are completed.

The following Questionnaires data are available by request:

  1. Baseline Questionnaire (BQ)
  2. Dietary Questionnaire (DQX)
  3. Diet History Questionnaire (DHQ)
  4. Supplemental Questionnaire (SQX)
  5. Medication Use Questionnaire (MUQ)
  6. Brief Survey Questionnaire (BCQ)