Fig. 1From: Validation of the society of thoracic surgeons predicted risk of mortality score for long-term survival after cardiac surgery in IsraelKaplan–Meier survival estimates for cohorts A-E. Kaplan–Meier survival estimates stratified by the Society of Thoracic Surgeons Predicted Risk of Mortality. The cohort was divided into five sub-groups according to the Society of Thoracic Surgeons Predicted Risk of Mortality—A: 0–0.99%, B: 1.0–1.99%, C: 2.0–2.99%, D: 3.0–4.99% and E: ≥ 5.0%. Higher Society of Thoracic Surgeons Predicted Risk of Mortality was a strong predictor of decreased long-term survival. P < 0.0001 by the non-parametric Wilcoxon signed-rank test of each risk category against Group ABack to article page