The Value of Adding Laboratory Data to Coronary Artery Bypass Grafting Registry Data to Improve Models for Risk-Adjusting Provider Mortality Rates

The clinical models with and without laboratory data had similar discrimination. Hospital risk-adjusted mortality rates were essentially unchanged, and hospital outlier status was identical. However, three laboratory variables, ALKP, AST, and PT, were significant independent predictors of mortality, and they deserve consideration of addition to CABG clinical databases.