. Author manuscript; available in PMC: 2014 Mar 24.

Published in final edited form as: J Vasc Surg. 2012 Jun;55(6):1662–73.e2. doi: 10.1016/j.jvs.2011.12.010

Table I. Baseline Clinical Characteristics of Peripheral Arterial Disease Participants With and Without Walking Impairment Questionnaire.

	Without WIQ (N=41)	With WIQ (N=638)	p value
Age, y	72.4 (10.2)	72.7 (8.3)	0.82
Male, %	56.1	56.6	0.95
Black race, %	24.4	16.8	0.21
ABI	0.64 (0.1)	0.65 (0.2)	0.79
BMI, kg/m²	26.5 (4.9)	27.7 (5.1)	0.15
Current Smoker, %	22.0	18.1	0.62
Angina, %	26.8	33.5	0.38
CHF, %	29.3	22.7	0.34
MI, %	22.0	24.6	0.70
Pulmonary Disease, %	41.3	35.7	0.46
Cancer, %	19.5	17.6	0.75
Diabetes, %	39.0	31.8	0.34
Blocks walked in the past week, n	32.1 (70.1)	32.5 (56.1)	0.96

Values shown are mean (Standard deviation) unless otherwise indicated. WIQ = Walking Impairment Questionnaire; PAD = peripheral arterial disease; ABI = ankle brachial index; BMI = body mass index; CHF = congestive heart failure; MI = myocardial infarction.