The Clinical Outcomes Research Initiative (CORI) was established in 1995 under the American Society for Gastrointestinal Endoscopy (ASGE) to study outcomes of gastrointestinal (GI) endoscopic procedures in clinical settings. Physicians participating in the CORI consortium produce GI endoscopy reports using an electronic health record developed specially for the project. CORI practice sites include hospitals, ambulatory care centers, private practices, universities, and Veteran's hospitals. The practice data are stripped of most patient and physician identifiers before transmitting to a central data repository, where they are tested for completeness and accuracy. Data from all participating practices are merged and stored in the National Endoscopic Database (NED).

Data from the NED has been analyzed to examine endoscopic practice patterns, including endoscopic utilization, frequency and severity of endoscopic findings, and endoscopic treatment and medical management. The data also serve as a resource to develop research hypotheses and to support quality measure reporting. CORI data has already been utilized to support many research initiatives, many of which have resulted in publications in medical journals and presentations at GI conferences.

In addition to availability in through the CORI consortium, the data collected in the NED since 2000 is been contributed to the NIDDK Repository and is available for request through the NIDDK Repository site.

The current data package contains data from the v3 warehouse from 2000 through 2010.

The primary objectives of the CORI project are to study outcomes of gastrointestinal endoscopic procedures in varied clinical settings and examine endoscopic practice patterns.