Original article: cardiovascularA decade of change—risk profiles and outcomes for isolated coronary artery bypass grafting procedures, 1990–1999: a report from the STS National Database Committee and the Duke Clinical Research Institute
Section snippets
The Society of Thoracic Surgeons National Cardiac Database
Currently, patient data are harvested semiannually from the individual participant site providers contributing to the NCD [5]. Data are uploaded to a central warehouse facility, the Duke Clinical Research Institute. Certain data quality standard benchmarks need to be met both locally and nationally before a site’s data are included on the aggregate national set. Aggregate data are analyzed twice a year for site-specific feedback reporting, and benchmarked against regional and national
Results
Table 1documents the annual harvest data for the entire patient dataset from 1990 to 1999. A total of 1,154,486 CABG patient records were included in this analysis. Both the cumulative aggregate total record numbers and the aggregate Medicare population numbers are shown (n = 629,174). The cumulative aggregate number of harvest sites has grown fivefold during this decade.
Table 2displays the changes in risk factor frequency during this time interval. For display purposes, we concentrated on the
Operative mortality trends over time
The present study is the first published report from a multisite national dataset (in contrast to reports from large, single-institution databases 11, 12, 13, 14, 15) analyzing trends in CABG mortality. These results confirm that during the past decade patients undergoing CABG are older and with more comorbidities. Despite this, there has been a significant decline in overall operative mortality and risk-adjusted mortality for CABG during the decade from 1990 to 1999 (Fig 1).
Changing risk profile in CABG
The present study
Acknowledgements
The authors thank all STS participants who have contributed data to the STS National Database during the past decade. In addition, we extend our appreciation to the Society, the Officers, and the Members of the National Database Committee over the decade who have supported this National Database effort.
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