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. Author manuscript; available in PMC: 2013 Apr 4.
Published in final edited form as: Spine J. 2012 Apr 4;12(4):292–300. doi: 10.1016/j.spinee.2012.02.015

Table 1.

Subject Demographics and Characteristics

Neurogenic Claudication (n= 39) Vascular Claudication (n= 15) Asymptomatic (n= 28)
Male (n, %) 23 (59 %) 10 (66.7 %) 12 (42.9%)
Female (n, %) 16 (41 %) 5 (33.3 %) 16 (57.1%)
Mean age (years, SD) 64.67 (8.63) 69.53 (8.41) 61 (6.08)
Age Range (years) 55 - 85 57 - 88 55 - 77
Exercise every week (n, %) 19 (48.7 %) 11 (73.3 %) 17 (60.7 %)
Smoker in past 5 years (n, %) 8 (20.5 %) 6 (40 %) 2 (7.1 %)
Diabetes (n, %) 0 (0 %) 4 (26.7 %) 0 (0 %)
High blood pressure (n, %) 19 (48.7%) 15 (100 %) 7 (25 %)