| Model ID | 09-052-04 | 
 | Model Name | Society of Thoracic Surgeons (STS) (Isolated CABG) - Ventilation | 
 | Pubmed ID | 19559822 | 
 | First Author | Shahian | 
 | Journal | Annals of Thoracic Surgery | 
 | Year | 2009 | 
 | Title | The Society of Thoracic Surgeons 2008 cardiac surgery risk models: part 1–coronary artery bypass grafting surgery | 
 | Primary Index Condition | Cardiac Surgery | 
 | Secondary Index Condition | Revascularization | 
 | Outcome | Prolonged Ventilation | 
 | Model Sample Size | 464929 | 
 | Cohort Sample Size | 774881 | 
 | Number of Events | 45098 | 
 | Follow-Up Duration | Short (<3 months) | 
 | AUROC | 0.756 | 
 | Calibration Reported | 1 | 
 | Covariates | Intercept; Atrial fibrillation; Age; Age function 1; Age function 2; Age by reoperation function; Age by status function; BSA function 1; BSA function 2; CHF but not NYHA IV; CHF and NYHA IV; Chronic lung disease mild; Chronic lung disease moderate; Chronic lung disease severe; Creatinine function 1; Creatinine function 2; Creatinine function 3; CVD without prior CVA; CVD and prior CVA; Diabetes noninsulin dependent; Diabetes insulin dependent; Ejection fraction function; Female; Female by BSA function 1; Female by BSA function 2; Hypertension; IABP or inotropes; Immunosuppressive treatment; Insufficiency, tricuspid; MI 1 to 21 days; MI > 6 and < 24 hours; MI <= 6 hours; No. diseased vessel function; PCI <= 6 hours; Peripheral vascular disease; Race black; Race Hispanic; Race Asian; Reop, 1 previous operation; Reop, >= 2 previous operations; Shock; Status urgent; Status emergent; Status salvage; Unstable angina | 
 | Mesh Terms | To be updated | 
 | Number of Validations | 1 |