Table 2.
Factors associated with HIV seroconversions in MSM cohort in Guangzhou and Yangzhou, China
| Yangzhou | Guangzhou | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Bivariate analysis | Multivariate analysis | Bivariate analysis | Multivariate analysis | |||||||
| Factors | n | OR (95% CI) | p | OR (95% CI) | p | n | OR (95% CI) | p | OR (95% CI) | p |
| Age (years) | ||||||||||
| 20–40 | 5 (134) | 1 | 1 | 11 (176) | 1 | – | ||||
| >40 | 6 (57) | 3.03 (0.88–10.38) | 0.044 | 0.57 (0.29–1.12) | 0.107 | 1 (12) | 1.50 (0.17–12.80) | 0.527 | – | |
| Education level | ||||||||||
| Middle school or lower | 7 (66) | 3.44 (0.40–29.22) | 0.430 | – | 2 (15) | 2.68 (0.50–14.27) | – | |||
| High school | 3 (86) | 1.15 (0.11–11.53) | 1.000 | – | 3 (45) | 1.24 (0.31–5.03) | – | |||
| College or higher | 1 (39) | 1 | 7 (128) | 1 | – | |||||
| Marital status | ||||||||||
| Single | 1 (70) | 1 | 1 | 7 (147) | 1 | – | ||||
| Married | 10 (114) | 0.15 (0.02–1.20) | 0.053 | 0.63 (0.29–53.00) | 0.074 | 4 (34) | 2.67 (0.73–9.69) | 0.128 | – | |
| Divorced | 0 (7) | – | – | 1 (7) | 3.33 (0.35–31.59) | 0.316 | ||||
| Commercial sex in the past 6 months | ||||||||||
| Yes | 1 (9) | 2.15 (0.24–18.91) | 0.420 | – | 1 (8) | 2.19 (0.25–19.46) | 0.416 | – | ||
| No | 10 (182) | 1 | – | 11 (180) | 1 | – | ||||
| Condom use during last commercial sex encounter | ||||||||||
| Yes | 1 (5) | 1 | – | 1 (6) | 1 | – | ||||
| No | 0 (4) | – | – | 0 (2) | – | – | ||||
| Anal sex with a man in the past 6 months | ||||||||||
| Yes | 7 (117) | 1.11 (0.31–3.94) | 1.000 | – | 11 (107) | 9.28 (1.17–73.43) | 0.013 | 9.16 (1.15–72.53) | 0.036 | |
| No | 4 (74) | 1 | – | 1 (82) | 1 | 1 | ||||
| Condom use during last anal sex with a man | ||||||||||
| Yes | 2 (39) | 1 | – | 3 (71) | 1 | 1 | ||||
| No | 5 (78) | 1.31 (0.24–7.12) | 0.747 | – | 8 (36) | 0.15 (0.04–0.62) | 0.006 | 6.47 (1.60–26.20) | 0.009 | |
| Sex with female partners in the past 6 months | ||||||||||
| Yes | 10 (106) | 8.75 (1.09–69.78) | 0.024 | 4.47 (0.53–37.75) | 0.168 | 3 (50) | 0.88 (0.23–3.39) | 1.000 | – | |
| No | 1 (85) | 1 | 1 | 9 (133) | 1 | – | ||||
| Condom use during last sexual encounter with a female partner | ||||||||||
| Yes | 1 (51) | 1 | 1 | 1 (23) | 1 | – | ||||
| No | 9 (55) | 11.11 (1.36–90.25) | 0.008 | 9.78 (1.19–80.24) | 0.034 | 2 (27) | 1.76 (0.14–20.76) | 1.000 | – | |
| STD-associated symptom in the past 12 months | ||||||||||
| Yes | 1 (19) | 0.90 (0.11–7.44) | 0.922 | 2 (28) | 1.15 (0.24–5.57) | 0.694 | – | |||
| No | 10 (172) | 1 | 10 (160) | 1 | – | |||||
| Diagnosed with an STD in the past 12 months | ||||||||||
| Yes | 1 (17) | 1.05 (0.72–1.54) | 0.793 | – | 3 (51) | 0.88 (0.23–3.42) | 1.000 | – | ||
| No | 10 (174) | 1 | – | 9 (137) | 1 | – | ||||
| Syphilis positive | ||||||||||
| Yes | 7 (50) | 5.57 (1.55–19.96) | 0.008 | 5.13 (1.30–20.20) | 0.019 | 1 (15) | 1.05 (0.12–8.75) | 1.000 | – | |
| No | 4 (141) | 1 | 1 | 11 (173) | 1 | – | ||||
CI: confidence interval; OR: odd ratio; STD: sexually transmitted disease.