Univariate and multivariate risk factors for gonorrhoea, syphilis and HIV in 603 young (⩽30 years at entry until 35 years) homosexual HIV negative men, Amsterdam 1995–2002
| Factors | Gonorrhoea, self reported | Syphilis | HIV | |
|---|---|---|---|---|
| No (%) | RR (95% CI) | RR (95% CI) | RR (95% CI) | |
| *Significant at p<0.05. | ||||
| †Multivariate results, model containing calendar time, unprotected anal intercourse with casual partner, and unprotected oral sex with casual partner. | ||||
| ‡Multivariate results, model containing calendar time and money for sex. | ||||
| §Multivariate results, model containing education and unprotected anal intercourse with casual partner. | ||||
| ¶Not applicable. | ||||
| **Number of visits were reported. | ||||
| Calender time (per annum) | 1.27 (1.1 to 1.4)* | 2.13 (1.2 to 3.7)* | 0.93 (0.8 to 1.2) | |
| 1.20 (1.1 to 1.3)* † | 2.17 (1.2 to 3.8)*‡ | |||
| Country of birth (non-Dutch versus Dutch) | 76 (13%) | 1.0 (0.5 to 2.0) | 3.1 (0.6 to 15.3) | 1.8 (0.6 to 5.3) |
| Age ⩾26 versus <26 | 255 (42%) | 0.8 (0.5 to 1.2) | 0.5 (0.1 to 2.0) | 2.2 (0.8 to 6.4) |
| Education (at least college degree versus other education) | 363 (60%) | 0.9 (0.6 to 1.4) | 0.5 (0.1 to 1.7) | 0.38 (0.2 to 0.8)* 0.37 (0.2 to 0.9)*§ |
| Money for sex (yes versus no) | 52 (8%) | 1.6 (0.8 to 3.0) | 6.5 (1.6 to 26.0)* | 1.8 (0.5 to 5.9) |
| 7.9 (2.0 to 31.6)*‡ | ||||
| Unprotected anal intercourse with steady partner (yes versus other) | 1563** (32%) | 1.5 (0.9 to 2.2) | 1.6 (0.4 to 6.1) | 0.8 (0.3 to 1.9) |
| Unprotected anal intercourse | 638** (13%) | 2.6 (1.6 to 4.0)* | 3.2 (0.8 to 12.8) | 2.5 (1.1 to 6.1)* |
| with casual partner (yes versus other) | 1.9 (1.2 to 2.9)*† | 2.7 (1.1 to 6.5)*§ | ||
| Unprotected oral sex with steady partner (yes versus other) | 2305** (47.6%) | 1.3 (0.9 to 1.9) | 1.4 (0.4 to 5.1) | 0.7 (0.3 to 1.6) |
| Unprotected oral sex with casual partner (yes versus other) | 1889** (38.9%) | 3.2 (2.0 to 4.9)* 2.4 (1.5 to 3.7)*† | 1.2 (0.3 to 3.6) | 0.9 (0.4 to 2.0) |
| History of STI (yes versus no) | 81** (13%) | NA¶ | NA | 0.6 (0.2 to 2.1) |
| Concurrent STI with HIV (yes versus no) | 2** (0.04%) | NA | NA | 3.5 (0.8 to 15.1) |