Differences in reported esophageal cancer resection outcomes between national clinical and administrative databases

BackgroundThe Society of Thoracic Surgeons (STS) General Thoracic Surgery Database (GTSD) is the largest clinical thoracic surgical database in the United States. The purpose of the present study was to determine whether the GTSD esophagectomy outcomes are representative of nationwide outcomes by comparing them with other national clinical and administrative databases.MethodsFrom 2002 to 2008, esophageal cancer resection outcomes from the GTSD were compared with those from the National Surgery Quality Improvement Program (NSQIP) and Nationwide Inpatient Sample (NIS). The observed differences in patient characteristics and postoperative events were also analyzed.ResultsAnnual esophageal resection volumes have increased over time. However, as of 2008, the GTSD and NSQIP only capture a small proportion of resections performed nationally (36% and 11%, respectively). The median patient age and female gender were similar in all 3 databases. Mortality was significantly lower within the GTSD (3.2%) and NSQIP (2.6%) compared with the NIS (6.1%, P