Participant characteristics stratified by age
| Participant characteristics | Younger men (<40 years old) n (%) | Older men (≥40 years old) n (%) | Total n (%) |
| Age (years) | |||
| 21–29 | 16 (66.7) | 16 (33.3) | |
| 30–39 | 8 (33.3) | 8 (16.7) | |
| 40–49 | 8 (33.3) | 8 (16.7) | |
| 50–59 | 10 (41.7) | 10 (20.8) | |
| 60–66 | 6 (25.0) | 6 (12.5) | |
| Ethnicity | |||
| Chinese | 15 (62.5) | 18 (75.0) | 33 (68.8) |
| Malay | 5 (20.8) | 6 (25.0) | 11 (22.9) |
| Indian | 2 (8.3) | 0 | 2 (4.2) |
| Others | 2 (8.3) | 0 | 2 (4.2) |
| Marital status | |||
| Never married | 20 (83.3) | 9 (37.5) | 29 (60.4) |
| Married | 3 (12.5) | 10 (41.2) | 13 (27.1) |
| Separated | 1 (4.2) | 0 | 1 (2.1) |
| Divorced | 0 | 5 (20.8) | 5 (10.4) |
| Education level | |||
| Primary | 1 (4.2) | 8 (33.3) | 9 (18.8) |
| Secondary | 4 (16.7) | 7 (29.2) | 11 (22.9) |
| Diploma | 16 (66.7) | 5 (20.8) | 21 (43.8) |
| Degree/postgraduate | 3 (12.5) | 4 (16.7) | 7 (14.6) |
| Number of sexual partners in the past 12 months* | |||
| 0–1 | 11 (45.8) | 2 (8.3) | 13 (27.1) |
| 2–3 | 8 (33.3) | 10 (41.7) | 18 (37.5) |
| 4–5 | 4 (16.7) | 8 (33.3) | 12 (25.0) |
| ≥6 | 1 (4.2) | 4 (16.7) | 5 (10.4) |
| HIV testing behaviour | |||
| Never tested | 11 (45.8) | 11 (45.8) | 22 (45.8) |
| Tested >12 months ago | 4 (16.7) | 4 (16.7) | 8 (16.7) |
| Tested in the past 12 months | 9 (37.5) | 9 (37.5) | 18 (37.5) |
*Included both casual and regular sex partners.