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Government Funding Lapse

Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted. The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit  cc.nih.gov. Updates regarding government operating status and resumption of normal operations can be found at OPM.gov.

Free PSA Datasets

The following PLCO Free PSA 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.

To learn more about the Free PSA data collected as part of the study, visit the PLCO Free PSA documentation page.


Datasets and Data Dictionaries

Files Description
Data Dictionary
(PDF - 44.6 KB)
1. The Free PSA data were measured on blood collected at entry for 6,806 subjects prior to 1998. Data includes PSA, free PSA and the percent of free PSA.

User Guides and Other Files

User Guides are intended to serve as a guide to using the data contained in these datasets.

For PLCO:
PLCO User Guide
(PDF - 291.4 KB)