| Ever have had anal intercourse behavior in the past 6 months | Had anal intercourse with a male sex partner in the past 6 months | Had anal intercourse with multiple male sex partner s in the past 6 months | Used a condom every time | ||||
---|---|---|---|---|---|---|---|---|
 | OR adjusted (95% CI) | P | OR adjusted (95% CI) | P | OR adjusted (95% CI) | P | OR adjusted (95% CI) | P |
City | Â | <0.0001 | Â | <0.0001 | Â | <0.0001 | Â | NS |
   Harbin | 1 |  | 1 |  | 1 |  | 1 |  |
   Qiqihar | 1.79 (1.11-2.90) |  | 3.44 (2.46-4.81) |  | 0.43 (0.31-0.59) |  | 0.80 (0.57-1.13) |  |
   Mudanjiang | 0.51 (0.34-0.77) |  | 1.87 (1.33-2.64) |  | 0.39 (0.29-0.54) |  | 0.78 (0.55-1.11) |  |
   Jiamusi | 1.06 (0.67-1.68) |  | 2.43 (1.70-3.46) |  | 0.48 (0.34-0.67) |  | 0.67 (0.47-0.96) |  |
Age group | Â | 0.006 | Â | NS | Â | 0.003 | Â | NS |
   15-24 years | 1 |  | 1 |  | 1 |  | 1 |  |
   25-34 years | 1.29 (0.82-2.05) |  | 0.79 (0.57-1.10) |  | 1.38 (1.01-1.90) |  | 1.11 (0.79-1.56) |  |
   35-44 years | 0.61 (0.35-1.08) |  | 0.74 (0.47-1.16) |  | 1.00 (0.65-1.53) |  | 0.83 (0.52-1.34) |  |
   45+ years | 0.43 (0.21-0.86) |  | 1.02 (0.57-1.83) |  | 0.56 (0.32-0.98) |  | 0.63 (0.33-1.19) |  |
Education | Â | NS | Â | NS | Â | NS | Â | NS |
   ≤1 education | 1 |  | 1 |  | 1 |  | 1 |  |
   2 education | 1.04 (0.43-2.49) |  | 1.05 (0.47-2.32) |  | 1.01 (0.49-2.11) |  | 2.15 (0.86-5.38) |  |
   3-4 education | 1.54 (0.65-3.67) |  | 1.35 (0.61-2.96) |  | 1.02 (0.50-2.09) |  | 1.84 (0.74-4.53) |  |
   ≥5 education | 1.37 (0.56-3.40) |  | 1.23 (0.55-2.75) |  | 1.04 (0.50-2.19) |  | 2.06 (0.82-5.19) |  |
Marriage status | Â | NS | Â | NS | Â | NS | Â | NS |
   Single | 1 |  | 1 |  | 1 |  | 1 |  |
   Married and cohabitation | 0.93 (0.56-1.52) |  | 1.12 (0.75-1.66) |  | 0.87 (0.60-1.27) |  | 0.88 (0.58-1.34) |  |
   Divorce and widowed | 1.70 (0.82-3.50) |  | 1.43 (0.83-2.45) |  | 0.99 (0.59-1.66) |  | 0.85 (0.48-1.51) |  |
Vocation | Â | NS | Â | NS | Â | NS | Â | NS |
   Unemployed | 1 |  | 1 |  | 1 |  | 1 |  |
   Students | 0.94 (0.54-1.66) |  | 1.11 (0.73-1.69) |  | 0.89 (0.59-1.33) |  | 1.06 (0.68-1.64) |  |
   White collar | 0.40 (0.21-0.79) |  | 1.20 (0.71-2.03) |  | 0.51 (0.31-0.85) |  | 1.05 (0.60-1.82) |  |
   Blue collar | 0.66 (0.40-1.09) |  | 1.13 (0.77-1.66) |  | 0.71 (0.49-1.02) |  | 1.25 (0.84-1.86) |  |
Income(RMB/month) | Â | 0.02 | Â | NS | Â | NS | Â | 0.02 |
   <1000 | 1 |  | 1 |  | 1 |  | 1 |  |
   1000-2000 | 1.35 (0.90-2.02) |  | 0.86 (0.62-1.20) |  | 1.35 (0.98-1.85) |  | 1.03 (0.73-1.46) |  |
   2000-3000 | 2.79 (1.39-5.58) |  | 0.94 (0.58-1.52) |  | 1.74 (1.10-2.75) |  | 1.93 (1.19-3.14) |  |
   >3000 | 3.27 (0.92-11.58) |  | 1.00 (0.45-2.23) |  | 1.79 (0.84-3.82) |  | 0.74 (0.33-1.62) |  |
Places of searching sexual partners | Â | 0.04 | Â | 0.0003 | Â | <0.0001 | Â | 0.02 |
   Bar/nightclub | 1 |  | 1 |  | 1 |  | 1 |  |
   Bath/Saunas | 1.91 (1.20-3.03) |  | 0.72 (0.49-1.05) |  | 1.92 (1.34-2.74) |  | 0.69 (0.47-1.02) |  |
   Park/latrine | 1.20 (0.69-2.06) |  | 0.98 (0.62-1.55) |  | 1.11 (0.72-1.71) |  | 0.43 (0.26-0.71) |  |
   Internet | 1.64 (1.10-2.43) |  | 1.36 (1.00-1.84) |  | 0.99 (0.74-1.33) |  | 0.81 (0.58-1.12) |  |
   Fixed locations | 1.60 (0.53-4.83) |  | 3.02 (1.47-6.21) |  | 0.44 (0.21-0.92) |  | 0.57 (0.27-1.22) |  |
HIV testing over 1 year ago | Â | 0.01 | Â | NS | Â | NS | Â | <0.0001 |
   Tested | 1 |  | 1 |  | 1 |  | 1 |  |
   Never tested | 0.66 (0.48-0.92) |  | 0.82 (0.64-1.04) |  | 0.97 (0.77-1.23) |  | 0.59 (0.46-0.76) |  |