. Author manuscript; available in PMC: 2017 Feb 17.

Published in final edited form as: J Vasc Surg. 2015 Jul 26;62(3):655–64.e8. doi: 10.1016/j.jvs.2015.04.391

Table VI.

Multivariable Cox proportional hazards model of factors associated with freedom from major amputation (FFA) after peripheral vascular intervention (PVI) for critical limb ischemia (CLI)^a

Variable	HR	95% CI	P value
Dialysis dependence	2.7	1.6–4.5	<.01
Tissue loss	2.0	1.1–3.7	.02
Prior major contralateral amputation	2.0	1.1–3.5	.02
Nonwhite race	1.7	1.0–2.9	.04
Male gender	1.6	1.1–2.6	.03
Current or former smoker	0.6	0.4–1.0	.04

CI, Confidence interval; HR, hazard ratio.

C index = 0.69.