Original article: cardiovascularThe society of thoracic surgeons: 30-day operative mortality and morbidity risk models
Section snippets
Study population
Since its inception, the STS National Cardiac Database has grown to 1.5 million records by 1999. For data obtained during the study period from 1997 to 1999, there were 497 participating member sites (representing approximately 589 unique hospitals) submitting data (668,386 total records). Of these records, 505,645 records indicated that a CABG-only procedure was performed.
From the set of records with CABG-only procedural designation, records with missing age (or out-of-range age) or missing
Risk profile for study population
For the STS CABG patient population studied (total STS CABG-only patient records = 503,478), the average age was 64.9 years (median, 66.0) with a standard deviation of 10.7 years. This generally male CABG population (29.1% female) was predominantly noted to have three-vessel disease (69.9%). There were 6.6% that required an emergent or salvage procedure and 31.1% that required an urgent procedure. Preoperatively, there was a relatively high level of other comorbidities including peripheral
Comment
Ultimately, the aim of performing a cardiac surgical procedure is to get the patient through their hospital experience both alive and well with a substantial improvement in functional and overall health. Historically, risk-adjusted 30-day operative mortality rates have been a predominant focus of STS national quality improvement reporting. These STS 30-day risk models were developed with the goal of providing surgical teams clinically relevant risk-adjusted mortality and morbidity reports to
Acknowledgements
Doctor Shroyer’s participation in this project was supported in part by funding from the Department of Veterans Affairs’ Health Services Research and Development Office (Grant IHY 99214–1, Dr Shroyer Principal Investigator), the VA Office of Patient Care Services, and the VA Office of Quality and Performance, VA Headquarters, Washington, DC. The authors wish to thank all of the participants of the STS National Database Committee for their support to make this risk-adjusted mortality/morbidity
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