Table 3.

Risk factor for death by Cox hazard proportional models-hazard ratios

	Crude	Full model	Reduced model
Male gender	0.30b (0.13-0.68)	0.26b (0.10-0.69)	0.32b (0.14-0.75)
Bilirubin	1.26a (1.03-1.55)	1.22 (0.96-1.55)	1.24a (1.01-1.54)
EuroSCORE	1.44b (1.22-1.71)	1.46b (1.18-1.81)	1.42b (1.15-1.74)
Multiple procedures	2.53a (1.08-5.91)	1.31 (0.51-3.37)
CABG	2.90a (1.25-6.75)	4.05b (1.47-11.20)	3.34b (1.33-8.38)

^aP < 0.05;

^bP < 0.01 vs control. CABG: Coronary arteries bypass grafting.