Table 2.
Factors associated with unprotected anal intercourse among MSM in Guangzhou, 2008–2013, by Logistic regression model a
| Factor | UAI b% (n) | COR (95% CI) c | AOR (95% CI) d |
|---|---|---|---|
| Age (years) | |||
| <20 | 73.7 (56) | 2.75 (1.55-4.88)f | 2.22 (1.07-4.61)e |
| 20-29 | 59.0 (916) | 1.42 (1.07-1.87)e | 1.30 (0.87-1.93) |
| 30-39 | 57.8 (432) | 1.35 (1.00-1.81) | 1.17 (0.81-1.67) |
| ≥40 | 50.4 (115) | 1.00 | 1.00 |
| Ethnicity | |||
| Han | 58.5 (1461) | 1 | - |
| Others | 54.7 (58) | 0.86 (0.58-1.27) | |
| Hukou (registered permanent residence) | |||
| Guangzhou | 56.7 (472) | 1 | - |
| Other city in Guangdong province | 58.4 (354) | 1.07 (0.87-1.33) | |
| Outside Guangdong province | 59.5 (693) | 1.13 (0.94-1.35) | |
| Education level | |||
| Junior high school or lower | 63.4 (204) | 1.35 (1.06-1.73)e | 1.41 (1.04-1.90)e |
| Senior high school | 61.2 (415) | 1.23 (1.03-1.48)e | 1.23 (0.99-1.51) |
| College or higher | 56.1 (900) | 1.00 | 1.00 |
| Marital status | |||
| Single | 54.7 (903) | 1.00 | 1.00 |
| Cohabiting with male partner | 72.0 (296) | 2.13 (1.68-2.70)f | 2.15 (1.66-2.79)f |
| Married | 56.8 (259) | 1.08 (0.88-1.34) | 1.28 (0.96-1.71) |
| Divorced or widowed | 70.9 (61) | 2.02 (1.26-3.25)f | 2.80 (1.54-5.07)f |
| Monthly income (CNY) | |||
| 0 | 60.4 (198) | 1 | - |
| ≤2000 | 62.5 (282) | 1.10 (0.82-1.47) | |
| 2001-3000 | 57.3 (322) | 0.88 (0.67-1.16) | |
| 3001-4000 | 57.3 (263) | 0.88 (0.66-1.16) | |
| >4000 | 56.5 (454) | 0.85 (0.66-1.11) | |
| Self-perceived sexual orientation | |||
| Homosexual | 59.5 (1012) | 1 | - |
| Bisexual | 57.0 (470) | 0.90 (0.76-1.08) | |
| Uncertain | 53.0 (97) | 0.77 (0.57-1.04) | |
| Venues for meeting partners | |||
| Bar, disco, tea house or club | 60.6 (94) | 1 | - |
| Bath house, sauna or massage | 61.0 (47) | 1.02 (.058-1.780 | |
| Park, public toilet | 55.4 (96) | 0.81 (0.52-1.27) | |
| Internet | 58.5 (1155) | 0.92 (0.66-1.28) | |
| Other | 56.3 (129) | 0.84 (0.55-1.27) | |
| Age of first sex with male (years) | |||
| <19 | 63.8 (298) | 1.00 | 1.00 |
| 19-24 | 58.7 (756) | 0.80 (0.65-1.00) | 0.93 (0.73-1.20) |
| ≥25 | 55.0 (465) | 0.69 (0.55-0.87)f | 0.78 (0.58-1.05) |
| HIV test in the past 12 months | |||
| Yes | 55.3 (679) | 1.00 | 1.00 |
| no | 61.1 (834) | 1.28 (1.08-1.48)f | 1.36 (1.12-1.65)f |
| UVIb | |||
| Yes | 61.9 (208) | 1.16 (0.94-1.50) | |
| No | 57.8 (1311) | 1 | - |
| Coverage of HIV intervention | |||
| Yes | 57.0 (1186) | 1.00 | 1.00 |
| no | 63.8 (333) | 1.33 (1.09-1.62)f | 1.21 (0.94-1.56) |
| Number of male partners in the past 6 months | |||
| 1 | 59.3 (463) | 1.00 | 1.00 |
| 2 | 63.3 (394) | 1.18 (0.96-1.47) | 1.27 (1.02-1.59)e |
| 3 | 67.4 (302) | 1.42 (1.11-1.81)f | 1.49 (1.16-1.92)f |
| 4-9 | 71.6 (272) | 1.73 (1.33-2.25)f | 1.77 (1.35-2.33)f |
| ≥10 | 73.5 (86) | 1.91 (1.23-2.94)f | 1.85 (1.18-2.91)f |
aOnly factors significant in univariate analysis were included in the multivariate logistic regression model.
bUnprotected anal intercourse.
cUnivariate logistic regression analysis; dMultivariate logistic regression analysis.
e P < 0.05; f P < 0.01.