Table 7. Cox regression analysis of factors associated with overall survival.

Variable	Univariate analysis				Multivariate analysis
	B	HR	95%CI	p-value	B	HR	95%CI	p-value
Diabetes mellitus	−0.482	0.61	0.175-2.176	0.453	0.207	−0.482	0.175-2.176	0.453
Chronic kidney failure	−0.693	0.50	0.095-2.626	0.419	−0.693	0.50	0.095-2.626	0.419
Tobacco use	0.276	1.31	0.314-5.536	0.706	0.276	1.31	0.314-5.536	0.706
High surgical risk	−0.292	0.74	0.072-7.698	0.806	6.981	0.54	0.135-2.198	0.080
TASC type C/D	−0.517	0.59	0.388-5.188	0.519	−0.517	0.59	0.388-5.188	0.519
Male gender	−2.324	0.09	0.016-0.590	0.011	−2.324	0.09	0.016-0.590	0.011
Heart disease	-0.371	1.44	0.211-9.933	0.706	−0.371	1.44	0.211-9.933	0.706

B = coefficient; HR = hazard ratio; CI = confidence interval.