| Socio-demographic characteristics |
| Age group |
| 18–30 | 53.2 | 1.0 |
| 31–40 | 57.8 | 0.55 (0.19, 1.59) |
| > 40 | 77.8 | 1.40 (0.25, 7.93) |
| Highest educational level attained |
| Senior high or below | 83.3 | 1.0 |
| College or above | 61.5 | 0.32 (0.08, 1.25)† |
| Current marital status |
| Currently single | 69.0 | 1.0 |
| Married/cohabited with a man | 64.3 | 0.81 (0.29, 2.22) |
| Monthly personal income (HK$) |
| < 10,000 | 75.0 | 1.0 |
| 10,000-19,999 | 74.1 | 0.95 (0.20, 4.55) |
| 20,000-39,999 | 63.6 | 0.58 (0.12, 2.80) |
| 40,000 and above | 44.4 | 0.27 (0.04, 1.70) |
| Current employment status |
| Full-time | 67.9 | 1.0 |
| Part-time/unemployed/retired/ students | 64.7 | 0.87 (0.27, 2.73) |
| Sexual orientation |
| Homosexual | 66.2 | 1.0 |
| Bisexual | 80.0 | 2.05 (0.22, 19.43) |
| Channels of recruitment |
| Outreach in gay venues | 73.3 | 1.0 |
| Online recruitment | 68.4 | 0.79 (0.21, 2.99) |
| Peer referral | 58.8 | 0.52 (0.12, 2.32) |
| Service utilization |
| HIV testing in the last 12 months |
| No | 50.0 | 1.0 |
| Yes | 72.0 | 2.60 (1.01, 7.18)* |
| Other HIV prevention services in the last 12 months (e.g., condom distribution, peer education, pamphlet and lectures) |
| No | 73.9 | 1.0 |
| Yes | 63.8 | 0.62 (0.21, 1.88) |
| Drug cessation/rehabilitation services provided by governmental organizations |
| No | 69.1 | 1.0 |
| Yes | 0.0 | N.A. |
| Drug cessation/rehabilitation services provided by non-governmental organizations |
| No | 68.3 | 1.0 |
| Yes | 57.1 | 0.62 (0.13, 3.04) |
| History of sexual transmitted infections/viral hepatitis |
| History of other sexually transmitted infections |
| No | 68.0 | 1.0 |
| Yes | 65.0 | 0.87 (0.29, 2.61) |
| Sexual behaviors in the last 12 months |
| Had had anal intercourse with regular male sex partners (RP) |
| No | 68.8 | 1.0 |
| Yes | 66.7 | 0.91 (0.27, 3.02) |
| Had had anal intercourse with non-regular male sex partners (NRP) |
| No | 57.1 | 1.0 |
| Yes | 68.3 | 1.61 (0.33, 7.89) |
