. Author manuscript; available in PMC: 2009 Jun 23.

Published in final edited form as: J Vasc Surg. 2008 Jan;47(1):117–122. doi: 10.1016/j.jvs.2007.09.033

Table IV.

Multivariate Cox Proportional Hazards model to predict mortality from baseline measures in patients with intermittent claudication.

Step: Predictor Variables	Relative Risk	95% Confidence Interval	P Value
Step 1: Age	1.045	1.019 to 1.072	< 0.001
Step 2: BMI	0.943	0.902 to 0.986	0.009
Step 3: ABI	0.202	0.064 to 0.632	0.006
Step 4: Activity Group	0.595	0.370 to 0.955	0.031

ABI = ankle/brachial index, BMI = body mass index.