Table 3.
Factors associated with HIV infection among MSM in Chengdu
| Univariate | Multivariate | ||||||
|---|---|---|---|---|---|---|---|
| N | OR | 95% CI | P-value | OR | 95% CI | P-value | |
| Age (years) | |||||||
| <25 (Ref) | 295 | 1 | — | — | — | ||
| 25–35 | 142 | 1.62 | 0.81, 3.28 | 0.18 | — | — | — |
| >35 | 76 | 2.08 | 0.93, 4.66 | 0.07 | — | — | — |
| Education | |||||||
| Senior high school or lower (Ref) | 206 | 1 | 1 | ||||
| College or above | 247 | 1.03 | 0.56, 1.91 | 0.92 | 3.17 | 1.44, 6.97 | <0.01 |
| Occupation | |||||||
| Clerk/student (Ref) | 240 | 1 | 1 | ||||
| Self-employed/service business | 224 | 4.52 | 2.03, 10.10 | <0.01 | 4.11 | 1.68, 10.06 | <0.01 |
| Money boy (MB) | 47 | 5.12 | 1.76, 14.90 | <0.01 | 6.43 | 1.54, 28.86 | 0.01 |
| Marital status | |||||||
| Never married | 404 | 1 | — | — | — | ||
| Married/divorced | 96 | 1.66 | 0.82, 3.36 | 0.16 | — | — | — |
| Income (yuan/month) | |||||||
| <500 | 93 | 0.48 | 0.18, 1.27 | 0.14 | — | — | — |
| 500–2000 (Ref) | 274 | 1 | — | — | — | ||
| >2000 | 127 | 0.65 | 0.30, 1.40 | 0.27 | — | — | — |
| Sexual orientation | |||||||
| Homosexual (Ref) | 347 | 1 | — | — | — | ||
| Bisexual | 130 | 1.08 | 0.53, 2.17 | 0.84 | — | — | — |
| Heterosexual | 36 | 0.96 | 0.28, 3.32 | 0.95 | — | — | — |
| From urban or rural area | |||||||
| Urban (Ref) | 410 | 1 | — | — | — | ||
| Rural | 103 | 1.92 | 0.98, 3.77 | 0.06 | — | — | — |
| Time of living in Chengdu | |||||||
| <=5 years (Ref) | 193 | 1 | 1 | ||||
| >5 years | 320 | 2.59 | 1.22, 5.51 | 0.01 | 2.47 | 1.06, 5.76 | 0.04 |
| Number of lifetime male partners for anal sex | |||||||
| <=10 (Ref) | 324 | 1 | 1 | ||||
| >10 | 165 | 3.60 | 1.87, 6.93 | <0.01 | 2.76 | 1.32, 5.78 | <0.01 |
| Number of BFs in past 6 months | |||||||
| 0 (Ref) | 153 | 1 | — | — | — | ||
| 1 | 246 | 0.90 | 0.43, 1.88 | 0.78 | — | — | — |
| >1 | 114 | 1.39 | 0.62, 3.12 | 0.43 | — | — | — |
| Number of casual male sex partners in past 6 months | |||||||
| 0 or 1 (Ref) | 219 | 1 | — | — | — | ||
| 2–5 | 204 | 1.01 | 0.47, 2.14 | 0.99 | — | — | — |
| >5 | 89 | 3.00 | 1.41, 6.36 | <0.01 | — | — | — |
| Number of lifetime female sex partners | |||||||
| <=1 (Ref) | 375 | 1 | — | — | — | ||
| >1 | 115 | 2.60 | 1.36, 4.96 | <0.01 | — | — | — |
| Condom use during the last intercourse | |||||||
| No (Ref) | 214 | 1 | — | — | — | ||
| Yes | 289 | 1.54 | 0.81, 2.93 | 0.19 | — | — | — |
| Condom use with BF in past 6 months | |||||||
| Never | 53 | 0.95 | 0.31, 2.90 | 0.92 | — | — | — |
| Sometimes | 221 | 1.28 | 0.67, 2.44 | 0.45 | — | — | — |
| Always (Ref) | 84 | 1 | — | — | — | ||
| Condom use with casual male partners in past 6 months | |||||||
| Never | 44 | 0.61 | 0.14, 2.70 | 0.51 | — | — | — |
| Sometimes | 193 | 1.73 | 0.92, 3.25 | 0.09 | — | — | — |
| Always (Ref) | 149 | 1 | — | — | — | ||
| Correctly answered questions about condom use | |||||||
| >=4/5 (Ref) | 261 | 1 | 1 | ||||
| <=3/5 | 252 | 2.22 | 1.16, 4.23 | 0.02 | 2.65 | 1.27, 5.54 | <0.01 |
| Lubricant use | |||||||
| No (Ref) | 82 | 1 | |||||
| Yes | 430 | 1.04 | 0.45, 2.41 | 0.93 | |||
| Preferred sexual behaviors | |||||||
| Anal sex | 277 | 1.06 | 0.57, 1.96 | 0.86 | |||
| Others (Ref) | 233 | 1 | |||||
| Diagnosed STD during lifetime | |||||||
| No (Ref) | 396 | 1 | — | — | — | ||
| Yes | 104 | 1.30 | 0.63, 2.67 | 0.47 | — | — | — |
| Either HSV or syphilis | |||||||
| No (Ref) | 318 | 1 | 1 | ||||
| Yes | 195 | 5.19 | 2.61, 10.33 | <0.01 | 4.48 | 2.02, 9.96 | <0.01 |
| Illegal drug use | |||||||
| Yes | 124 | 0.77 | 0.36, 1.64 | 0.50 | — | — | — |
| No (Ref) | 389 | 1 | — | — | — | ||
| CES_D | |||||||
| <15 (Ref) | 237 | 1 | — | — | — | ||
| 15–21 | 82 | 1.21 | 0.48, 3.04 | 0.68 | — | — | — |
| >21 | 193 | 1.59 | 0.81, 3.10 | 0.18 | — | — | — |