Table 2.

Behavioral injection practices

Variable		History of skin and soft tissue infection		p value	Odds ratio
		Yes (n = 18)	No (n = 62)
		n (%)	n (%)
Clean skin prior to injection	Always	4 (22.2)	14 (22.6)	0.667	Ref
	Most of the time	4 (22.2)	13 (21.0)		1.09 each decrease in freq
	Sometimes	3 (16.7)	14 (22.6)
	Rarely	3 (16.7)	10 (16.1)
	Never	4 (22.2)	9 (14.5)
Skin cleaning method	Alcohol pad	8 (44.4)	40 (64.5)	0.073*
	Soap and water	2 (11.1)	8 (12.9)
	Tap water	1 (5.6)	2 (3.2)
	Saliva	0 (0.0)	2 (3.2)
	Hydrogen peroxide	1 (5.6)	0 (0.0)
	Purell	0 (0.0)	1 (1.6)
	Never clean before injecting	1 (5.6)	0 (0.0)
	Prefer not to answer	1 (5.6)	0 (0.0)
Skin cleaning method	Sterile methods†	11	49	0.378	Ref
	Unsterile methods‡	2	4		2.23
Wash hands prior to injection	Always	4 (22.2)	16 (25.8)	0.205	Ref
	Most of the time	1 (5.6)	15 (24.2)		1.29 each decrease in freq
	Sometimes	5 (27.8)	11 (17.7)
	Rarely	5 (27.8)	11 (17.7)
	Never	3 (16.7)	7 (11.3)
Water source	Tap water (home)	12 (66.7)	46 (74.2)	0.559
	Purchase from store	3 (16.7)	4 (6.5)
	Syringe exchange	2 (11.1)	3 (4.8)
	Tap water	0 (0.0)	4 (6.5)
	(public bathroom)
	N/A, liquid drug	0 (0.0)	2 (3.2)
	I don’t know	0 (0.0)	1 (1.6)
	Other	1 (5.6)	2 (3.2)
Water source	Sterile sources§	5	7	0.093*	Ref
	Unsterile sources#	12	50		0.34

^*Significant on the 0.10 level

^†Sterile skin methods: alcohol pad, hydrogen peroxide, hand sanitizer, soap and water

^‡Unsterile skin methods: never clean skin before injective, saliva, tap water

^§Sterile water sources: purchase from store, syringe exchange program

^#Unsterile water sources: tap water (home), tap water (public bathroom)