Table 2. Factors associated with HIV infection among 503 men who have sex with men in Chongqing City, China, 2009.
Factors | No. of participants | No. of HIV positives (%) | Crude OR (95%CI) | P-value | Adjusted OR (95%CI) a | P-value |
Age (year) | 0.001 | 0.059 | ||||
≤23 | 284 | 21(7.4) | 1.00 | 1.00 | ||
>23 | 219 | 37(16.9) | 3.7(1.7–8.1) | 2.2(1.0–4.9) | ||
Ethnicity | 0.05 | 0.001 | ||||
Han majority | 485 | 53(11.0) | 1.00 | 1.00 | ||
Other minorities | 18 | 5(27.8) | 4.0(1.0–16.2) | 8.3(2.4–29.1) | ||
Education | 0.02 | 0.161 | ||||
High school or below | 153 | 26(16.8) | 1.00 | 1.00 | ||
College or above | 350 | 32(9.3) | 0.4(0.2–0.9) | 0.6(0.2–1.3) | ||
Marital status | 0.01 | 0.281 | ||||
Never married | 461 | 9(21.4) | 1.00 | 1.00 | ||
Ever married b | 42 | 49(10.7) | 0.3(0.1–0.7) | 0.5(0.2–1.7) | ||
Currently living with a male sexual partner | 0.36 | |||||
No | 401 | 45(11.4) | 1.00 | |||
Yes | 102 | 13(12.3) | 0.6(0.2–1.7) | |||
Occupation | 0.001 | 0.012 | ||||
Non-student | 381 | 49(15.3) | 1.00 | 1.00 | ||
Student | 122 | 9(4.9) | 0.2(0.1–0.5) | 0.3(0.1–0.8) | ||
Duration of living in Chongqing City (year) | 0.16 | |||||
≤21 | 179 | 45(12.4) | 1.00 | |||
>21 | 324 | 13(8.9) | 0.6(0.3–1.3) | |||
Having incomes in the last year | 0.10 | |||||
No | 284 | 13(7.3) | 1.00 | |||
Yes | 219 | 45(13.9) | 2.1(0.9–5.2) | |||
Having a health insurance | 0.66 | |||||
No | 304 | 34(12.1) | 1.00 | |||
Yes | 199 | 24(10.9) | 0.8(0.4–1.7) | |||
Ever having sex with a woman | 0.59 | |||||
No | 390 | 29(9.7) | 1.00 | |||
Yes | 113 | 29(14.4) | 1.2(0.6–2.7) | |||
Duration of practicing homosexual sex with a man (year) | 0.68 | |||||
≤5 | 381 | 42(10.7) | 1.00 | |||
>5 | 122 | 16(14.5) | 1.2(0.5–3.0) | |||
Self reported sexual orientation | 0.58 | |||||
Homosexual | 146 | 45(11.8) | 1.00 | |||
Heterosexual | 334 | 13(11.0) | 1.3(0.5–3.2) | |||
Role in anal sex, if any (n = 480) c | 0.55 | |||||
Largely insertive | 222 | 10(6.9) | 1.00 | |||
Largely receptive | 281 | 48(14.4) | 1.4(0.5–3.7) | |||
Number of male partner in the past 6 months | 0.81 | |||||
≤1 | 478 | 17(7.6) | 1.00 | |||
>1 | 25 | 41(14.7) | 1.1(0.5–2.3) | |||
Exchanging sex for money in the past 6 months | 0.34 | |||||
No | 365 | 55(11.6) | 1.00 | |||
Yes | 138 | 3(11.5) | 2.3(0.4–13.0) | |||
Venue for finding the last male sexual partner in the past 6 months (n = 477) d | 0.90 | |||||
Non-internet | 139 | 13(9.2) | 1.00 | |||
Internet (ever) | 338 | 40(12.0) | 1.1(0.4–2.8) | |||
Syphilis infection | 0.12 | |||||
No | 477 | 51(10.7) | 1.00 | |||
Yes | 26 | 7(26.9) | 2.8(0.8–10.3) |
Adjusted values using RDSAT-generated weights for a respondent driven sample.
Including married, divorced and widowed.
24 men reported oral sex or masturbation only.
26 men reported no male sexual partner in the past 6 months.
OR: odds ratio; CI: confidence interval.