Table 4.

Multivariate logistic regression analysis of factors associated with HIV and hepatitis C virus (HCV) infections infection among injection drug users in Vinnitsya, Ukraine.

Variable	Model unit	Adjusted odds ratio	95% confidence interval	p-value
Model: HIV (N = 268)
HIV knowledge (HIV-KQ-45) score	1 score point	1.1	1.04, 1.15	<0.001
Using opiate drugs daily or almost daily in the past year	Yes/no	2.2	1.05, 4.46	0.04
Sharing needles/syringes with HIV positive person in the past year	Yes/no	3.4	1.24, 9.3	0.02
Model: HCV (N = 274)
Frequency of back- or frontloading in the past year	≥1 vs. <1 per month	4.0	1.5, 11.0	<0.01
Days of marijuana use in the past month	1 day of use	0.96	0.93, 0.99	0.02
Ever used drug addiction treatment	Yes/no	2.4	1.3, 4.5	<0.01

Note. Complete participant records from (N = 315) were excluded from the models if any variable was missing.