title: Preoperative prediction of early mortality and morbidity in coronary bypass surgery.
abstract: OBJECTIVE
  A scoring system to predict early mortality and morbidity in CABG, distinguishing low and high risk patients.
  
  
  METHODS
  563 patients (1998) served as development dataset, 969 patients as validation set. Univariate and logistic regression analysis was used to identify risk factors.
  
  
  RESULTS
  Gender, hypertension, pulmonary disease, reoperation, age, operative status and left-ventricular function were predictive variables for early mortality. The area under the ROC curve was 0.81. We identified a low risk, mortality of 1.8% and a high-risk group, mortality of 13.4%. Diabetes, hypertension, kidney and lung disease, reoperation, operative status and left ventricular function were predictive variables for morbidity. The area under the ROC curve was 0.73. We identified a low risk, morbidity of 17%, and a high-risk group, morbidity of 41%.
  
  
  CONCLUSIONS
  This scoring system is a simple system identifying a low and high-risk group for morbidity and early mortality.
authors.affiliation: Heartcenter, Department of Thoracic and Cardiac Surgery-414, University of Nijmegen Medical Center, St. Radboud, PO Box 9101, The Netherlands.
authors.forename: Stijn C W
authors.initials: SC
authors.lastname: Wouters
authors.forename: Luc
authors.initials: L
authors.lastname: Noyez
authors.forename: Freek W A
authors.initials: FW
authors.lastname: Verheugt
authors.forename: Rene M H J
authors.initials: RM
authors.lastname: Brouwer
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001026:Coronary Artery Bypass / Q000009:adverse effects / Q000401:mortality*; D003430:Cross-Sectional Studies; D005260:Female; D005500:Follow-Up Studies; D017052:Hospital Mortality; D006801:Humans; D007902:Length of Stay / Q000706:statistics & numerical data; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009017:Morbidity; D009426:Netherlands / Q000453:epidemiology; D011379:Prognosis; D012372:ROC Curve; D012307:Risk Factors