Predictors of HIV infection and prevalence for syphilis infection among injection drug users in China: Community-based surveys along major drug trafficking routes

Table 1 Demographic factors associated with HIV infection among injection drug users in three highly endemic regions of China

Factors	N*	% (HIV+)^†	OR (95% CI)	P
Sex
Female	122	34.4(42)	1.0	<0.001
Male	560	55.4(310)	2.4(1.6–3.6)
Age
<30 years	234	462(108)	1.0	0.3
≥ 30 years	353	50.4(178)	1.2(0.9–1.7)
Marital status
Married	195	51.8(101)	1.0	0.06
Single	395	49.1(194)	0.9(0.7–1.3)	0.5
Separated	80	63.8(51)	1.6(1.0–2.8)	0.05
Residency
Local	658	52.7(347)	1.0	0.005
Other province	17	11.8(2)	0.1(0.03–0.5)
Ethnicity
Han	390	48.7(190)	1.0	0.03
Other	285	57.2(163)	1.4(1.0–1.9)
Years of education
>6 years	487	52.2(254)	1.0	1.0
≤ 6 years	186	52.2(97)	1.0(0.7–1.4)
Monthly income
≤ 300 Yuan	220	50.9(112)	1.0	0.08
>300 Yuan	260	58.8(153)	1.4(1.0–2.0)
District
Nanning, Guangxi	207	16.4(34)	1.0	<0.001
Yili, Xinjiang	205	66.8(137)	10.3(6.4–16.4)	<0.001
Honghe, Yunnan	277	67.1(186)	10.4(6.7–16.2)	<0.001

*: Total N may not equal 689, because of missing data; N: the number of participants being tested; ^†: %: the prevalence of HIV infection; HIV+: the number of HIV positive.

ISSN: 1477-7517