Validation of the society of thoracic surgeons predicted risk of mortality score for long-term survival after cardiac surgery in Israel

Table 3 Independent predictors of long-term mortality

Risk factor	Hazard ratio	95% confidence intervals	P value
Age > 65 years	1.6	1.1–2.3	0.02
Diabetes mellitus	1.5	1.1–2.0	0.02
Preoperative dialysis	2.5	1.2–4.9	0.01
Reduced LVEF	1.6	1.1–2.5	0.005
Reoperation	2.0	1.2–3.2	0.005
STS PROM*
B C D E	3.3 3.4 4.3 6.3	1.7–6.3 1.7–7.4 2.2–8.7 3.1–12.6	< 0.001 < 0.001 < 0.001 < 0.001

STS PROM—Society of Thoracic Surgeons Predicted Risk of Mortality; LVEF—Left ventricular ejection fraction; *—Hazard ratio compared to group A (STS PROM = 0—0.99%)

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