Outcomes and long-term survival of coronary artery surgery: The controversial role of opium as risk marker

Table 3 Multivariable model for all-cause mortality using Cox regression

	Hazard ratio (95%CI)	P value
Age (per 10 yr increase)	2.46 (1.64-3.70)	< 0.001
Opium	2.09 (0.99-4.39)	0.052
BMI	0.89 (0.82-0.96)	0.004
FC		0.653
II vs I	0.86 (0.44-1.66)	0.653
III vs II	2.18 (0.97-4.88)	0.057
EF (per 5% increase)	0.71 (0.62-0.81)	< 0.001
DM	2.97 (1.59-5.54)	0.001
CVA	3.45 (1.30-9.16)	0.013

BMI: Body mass index; FC: Functional class; EF: Ejection fraction; DM: Diabetes mellitus; CVA: Cerebrovascular accident.