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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.

The following PLCO Breast 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 Breast data collected as part of the study, visit the PLCO Data Collected documentation page.


Datasets and Data Dictionaries

Files Description
Data Dictionary
(PDF - 356.7 KB)
1. The Breast dataset is a comprehensive dataset that contains nearly all the PLCO study data available for breast cancer incidence and mortality analyses. For many women the trial documents multiple breast cancers, however, this file only has data on the earliest breast cancer diagnosed in the trial. The dataset contains one record for each of the approximately 78,000 women in the PLCO trial.

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)

Data-Collection Forms

The following forms were used to collect data that is now available in the datasets listed above. They are provided in PDF format.

Baseline Questionnaire - Female
BQF1
BQF2
BQF3 - Scanned (1.7 MB)
Breast Cancer Supplemental Form
BCS - Scanned (317.6 KB)
Other Cancer Form
OCF - Scanned (405.5 KB)
Annual Study Update Form
ASU - Scanned (82.2 KB)