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.

Jia et al. Harm Reduction Journal 2008 5:29   doi:10.1186/1477-7517-5-29