| Determinants | Heterosexuals | Men who have sex with men | ||
| Univariate OR (95% CI) | Multivariate OR (95% CI) | Univariate OR (95% CI) | Multivariate OR (95% CI) | |
| Year (per year) | 0.85 (0.78 to 0.93) | NS | 0.77 (0.62 to 0.96) | NS |
| Age >30 years | NS | NS | 2.34 (1.29 to 4.22) | 2.19 (1.20 to 4.00) |
| Dutch nationality (women) | 2.36 (1.31 to 4.25)* | 2.08 (1.15 to 3.77)† | NS | NI |
| Commercial sex worker | 0.58 (0.36 to 0.94) | NS | NS | NI |
| Number of reported partners | NS | NI | ||
| <2 | 1 | 1 | ||
| 2–5 | 0.74 (0.55 to 1.00) | 0.67 (0.50 to 0.91) | ||
| 6–10 | 0.32 (0.10 to 1.02) | 0.33 (0.17 to 1.04) | ||
| >10 | 0.50 (0.22 to 1.14) | 0.47 (0.19 to 1.17) | ||
| History of STI | 2.17 (1.67 to 2.82) | 1.85 (1.39 to 2.45) | NS | NS |
| STI at current visit‡ | 1.44 (1.07 to 1.94) | NS | NS | NI |
| Previous HIV negative test | 1.24 (1.01 to 1.53) | 1.40 (1.14 to 1.72) | NS | NI |
| Current STI-related complaints | 2.16 (1.72 to 2.71) | 1.98 (1.57 to 2.51) | 4.03 (2.35 to 6.92) | 4.22 (2.43 to 7.33) |
| Warned that a partner was diagnosed with STI | 2.37 (1.57 to 3.06) | 2.43 (1.70 to 3.47) | 2.61 (1.23 to 5.57) | 2.94 (1.34 to 6.45) |
*Shown for women (interaction term with sex, p = 0.040), estimate for men not statistically significant; †shown for women (interaction term with sex, p = 0.141), estimate for men not statistically significant; ‡both diagnosis of Neisseria gonorrhoeae and Chlamydia trachomatis were significant determinants.
NI, not included in the multivariate model; NS, not significant; STI, sexually transmitted infection.