Table 4.

Multivariable Analysis of Factors Associated With Abscess History by Injection-Related Behaviors Among Injection Drug Use Living in San Diego, 2009–2010

Injection-Related Behaviors	AORa	95% CI
Distributive syringe sharing in last 3 months
Never	Ref
<50% of the time	1.17	0.75–1.82
≥50% of the time	1.92	1.01–3.64
Receptive syringe sharing in last 3 months
Never	Ref
<50% of the time	1.15	0.73–1.81
≥50% of the time	1.36	0.76–2.45
Cooker sharing in last 3 months
Never	Ref
<50% of the time	1.05	0.64–1.75
≥50% of the time	1.56	0.94–2.61
Cotton sharing in last 3 months
Never	Ref
<50% of the time	1.49	0.92–2.41
≥50% of the time	1.15	0.68–1.92
Rinse water sharing in last 3 months
Never	Ref
<50% of the time	1.44	0.87–2.39
≥50% of the time	1.13	0.68–1.88
Frequency of use of new, sterile syringe, last 3 months
Never	Ref
<50% of the time	2.06	0.79–5.39
≥50% of the time	1.52	0.63–3.71

Note. AOR = adjusted odds ratio; CI = confidence interval; HCV = hepatitis C virus.

^aThe regression model controlled for age, sex, race, housing status, HCV status, number of years injecting, number of injections/day, injection drug of choice, and number of injection partners.