Table 3.

Predictors of medium term mortality as determined by Cox Regression analysis

	Hazard ratio	95.0% CI for Odds ratio		Sig.
		Lower	Upper
Diabetes	1.735	1.208	2.492	0.003
hypercholestrolaemia	0.808	0.575	1.133	0.217
Hypertension	1.317	0.953	1.821	0.096
Pre-op renal failure	5.125	2.512	10.458	<0.0005
COPD	2.017	1.094	3.718	0.025
Peripheral Vascular disease	1.677	1.127	2.495	0.011
EF 30–50%	1.483	1.026	2.143	0.036
EF <30%	2.141	1.316	3.483	0.002
BMI >30	1.540	1.079	2.198	0.017
Current smoker at operation	1.673	1.031	2.715	0.037
Age at operation	1.072	1.050	1.094	<0.0005