Table 2.

Patient demographic data

	Control (N = 44)	Case (N = 80)
Demographic	Mean (SD)	Mean (SD)	P value
Age	25.4 (5)	26.9 (6.8)	0.1562*
Body Mass Index	26.1 (3.6)	26.6 (3)	0.2345*
Time since amputation (months)	8.4 (3.9)	8.9 (5.2)	0.9457*
	N (%)	N (%)
Male	44 (100)	78(97.5)	0.9577 ˆ
Regional catheter	22 (50)	31 (38.8)	0.2260 ˆ
Ethnicity	N (%)	N (%)	0.5700 ˆ
American Indian/Alaska Native	0 (0)	2 (2.5)
Asian	2 (4.5)	1 (1.3)
Native Hawaiian or Other Pacific Islander	0 (0)	1 (1.3)
Black or African American	3 (6.8)	5 (86.3
White	39 (88.6)	70 (88.6)
Amputation Site	N (%)	N (%)	0.8478 ˆ
Left upper extremity	2 (4.5)	5 (6.3)
Right upper extremity	1 (2.3)	3 (3.8)
Left lower extremity	22 (50)	34 (42.5)
Right lower extremity	19 (43.2)	38 (47.5)

*P value generated from Wilcoxon Rank-Sum test. ˆP value generated from chi-squared test.