Table 3.

Hazard Ratios Per SD Decrease in Walking Impairment Questionnaire Category Score

	Unadjusted		Adjusted*
	HR (95% CI)	P Value	HR (95% CI)	P Value
All-cause mortality
Distance score	1.73 (1.50–1.99)	<0.001	1.54 (1.32–1.81)	<0.001
Stair-climbing score	1.91 (1.60–2.27)	<0.001	1.73 (1.42–2.10)	<0.001
Speed score	1.95 (1.63–2.33)	<0.001	1.68 (1.37–2.06)	<0.001
Cardiovascular mortality
Distance score	2.10 (1.59–2.77)	<0.001	1.83 (1.34–2.51)	<0.001
Stair-climbing score	3.29 (2.13–5.07)	<0.001	2.91 (1.82–4.66)	<0.001
Speed score	3.04 (2.02–4.58)	<0.001	2.67 (1.69–4.22)	<0.001

CI indicates confidence interval; and HR, hazard ratio.

^*Adjusted for age, sex, race, smoking history, body mass index, systolic blood pressure, use of lipid-lowering medication, use of antihypertensive medication, diabetes mellitus status, total cholesterol, high-density lipoprotein-cholesterol, and ankle-brachial index.