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. 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 Vb. Adjusted Associations of WIQ distance score quartiles with total and cardiovascular disease mortality among non-PAD Participants.

HR (95% CI) p value p for trend
All-cause mortality
1st quartile [≤ 44.6] 1.36( 0.69 - 2.69) 0.37 0.69
2nd quartile [44.6 – 83.0] 1.05( 0.56 - 1.95) 0.88
3rd quartile [83.0 –100] 1.0 (referent) NA
Cardiovascular disease mortality
1st quartile [≤ 44.6] 1.09( 0.35 - 3.37) 0.88 0.68
2nd quartile [44.6 – 83.0] 1.55( 0.58 - 4.13) 0.38
3rd quartile [83.0 –100] 1.0 (referent) NA

Adjusted for age, sex, race, body mass index, smoking status, ankle brachial index, comorbidities, physical activity, statin use and ACE inhibitor use. WIQ = Walking Impairment Questionnaire; CVD = cardiovascular disease; PAD = peripheral arterial disease; HR = hazard ratio. Pairwise p value shows statistical significance relative to the 4th quartile.