title: [Mortality risk estimation in cardiac surgery].
abstract: BACKGROUND
  The aim of this study was to compare the ability of three risk models to predict operative mortality after cardiac surgery.
  
  
  METHODS
  Risk factors of 3111 patients (73% male, mean age 65.2 +/- 10.7 years) were derived from our institutional database at the Cardiac Surgery Department of the G.M. Lancisi Hospital, Ancona, Italy. The predicted mortality was derived from the Society of Thoracic Surgeons risk score (STS), the EuroSCORE (ES) and the Northern New England Cardiovascular Disease Study Group score (NE).
  
  
  RESULTS
  The observed mortality in the myocardial revascularization population (1995 patients) was 2.2% (43 patients). The mean predicted mortality by STS, ES and NE was 1.9, 4.2 and 1.9%, respectively. The predictive ability of the models was measured by means of the ROC curve. Curves were respectively of 0.82, 0.77 and 0.78.
  
  
  CONCLUSIONS
  All tested models proved e good accuracy level but ES showed a constant overestimation of mortality at all risk levels.
authors.affiliation: Divisione di Cardiochirurgia, Istituo Cardiologico G. M. Lancisi, Ancona. micheledpierri@yahoo.it
authors.forename: Michele Danilo
authors.initials: MD
authors.lastname: Pierri
authors.forename: Mauro
authors.initials: M
authors.lastname: Borioni
authors.forename: Gianfranco
authors.initials: G
authors.lastname: Iacobone
authors.forename: Gian Piero
authors.initials: GP
authors.lastname: Piccoli
authors.forename: Marco
authors.initials: M
authors.lastname: Di Eusanio
authors.forename: Fabio
authors.initials: F
authors.lastname: Bianchini
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Di Eusanio
mesh_terms: D000368:Aged; D006348:Cardiac Surgical Procedures / Q000401:mortality*; D015897:Comorbidity; D005260:Female; D019918:Heart Valve Prosthesis Implantation / Q000401:mortality / Q000706:statistics & numerical data; D006801:Humans; D007558:Italy / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D009204:Myocardial Revascularization / Q000401:mortality / Q000706:statistics & numerical data; D012372:ROC Curve; D018570:Risk Assessment / Q000379:methods*; D012307:Risk Factors; D016896:Treatment Outcome