. Author manuscript; available in PMC: 2014 Mar 1.

Published in final edited form as: Diabetes Res Clin Pract. 2013 Jan 8;99(3):281–286. doi: 10.1016/j.diabres.2012.12.022

Table 1.

Characteristics of Study Subjects

Characteristic	Total Population (N=162)	No Foot Ulcer (N=131)	Foot Ulcer (N=31)	P value^*
Age, years	57 (52, 65)	56 (52, 64)	66 (61, 77)	<0.001
Sex, no. (%) female	71 (44)	62 (47)	9 (29)	0.065
Race, no. (%) Caucasian	122 (75)	100 (76)	22 (71)	0.53
BMI, kg/m2	30.5 (27.2, 34.7)	31.1 (27.6, 35.0)	27.4 (23.6, 31.7)	0.01
Tobacco use, no. (%)	95 (59)	71 (54)	24 (77)	0.02
Hypertension, no. (%)	124 (77)	98 (75)	26 (84)	0.28
Hyperlipidemia, no. (%)	105 (65)	85 (65)	20 (65)	0.97
TAC score (Agatston units)	58 (0, 1018)	9.4 (0, 343.9)	4324 (609, 11163)	<0.001
Peripheral occlusion index	2.9 (1.2, 5.0)	2.2 (1.0, 3.6)	5.5 (4.8, 6.4)	<0.001

Values are shown as median and interquartile ranges for continuous variables and percentages (%) for categorical variables. TAC = tibial artery calcification, BMI= Body Mass Index.

Wilcoxon’s rank sum test was used for comparing continuous variables, and percentages were compared using Pearson chi-square test in patients with and without foot ulcers.