The following PLCO SCU 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 SCU data collected as part of the study, visit the PLCO SCU documentation page.
Datasets and Data Dictionaries
(PDF - 325.0 KB)
|1. The SCU dataset contains information for 4100 PLCO participants, focused primarily on the utilization of colonoscopy as surveillance to baseline colonoscopy. The dataset also contains site-specific data collected through PLCO.|
User Guides and Other Files
User Guides are intended to serve as a guide to using the data contained in these datasets.
PLCO User Guide
(PDF - 394.1 KB)
The following forms were used to collect data that is now available in the datasets listed above. They are provided in PDF format.
SCU Colonoscopy Questionnaire
CQX - Scanned (298.8 KB)
Baseline Questionnaire - Female
BQF3 - Scanned (1.7 MB)
Baseline Questionnaire - Male
BQM3 - Scanned (1.6 MB)
Flexible Sigmoidoscopy Screening Exam Form
FSG2 - Scanned (584.8 KB)
Colorectal Diagnostic Evaluation Form
DEC3 - Scanned (3.1 MB)