Factors independently associated with STI, FSW aged 18 years and older, Tijuana, BC
| Any STI | HIV | Syphilis titre ⩾1 : 8 | Gonorrhoea | Chlamydia | |
| AOR (95% CI) | AOR (95% CI) | AOR (95% CI) | AOR (95% CI) | AOR (95% CI) | |
| Individual traits | |||||
| Migrant to BC (vs BC native) | 0.72 (0.44 to 1.17) | 0.74 (0.32 to 1.74) | 1.10 (0.57 to 2.11) | 0.72 (0.35 to 1.49) | 0.87 (0.48 to 1.55) |
| Age 35–64 years (vs age 18–34 years) | NS | – | – | – | 0.53* (0.31 to 0.91) |
| 7–20 Years of schooling (vs 0–6 years) | – | 0.42* (0.19 to 0.90) | – | – | – |
| Own home (vs not homeowner) | 0.32** (0.16 to 0.62) | NS | – | 0.13* (0.02 to 0.99) | 0.28* (0.11 to 0.71) |
| Speaks English (vs does not speak English) | – | – | 1.87* (1.03 to 3.41) | – | – |
| Currently employed as a dance host (vs not employed as a dance host) | – | – | – | 0.30* (0.10 to 0.86) | – |
| Currently employed as a bar maid (vs not employed as a bar maid) | – | – | – | – | – |
| Currently employed as a streetwalker (vs not employed as a streetwalker) | – | – | NS | – | – |
| Registered with MHS (vs not registered) | – | – | – | – | – |
| Client traits | |||||
| Has US clients (vs no US clients) | NS | – | 4.33** (1.48 to 12.62) | – | – |
| Male clients inject drugs (vs no male clients who inject drugs) | – | – | 0.28** (0.16 to 0.52) | – | – |
| Financial reliance on male clients (vs not financially reliant on male clients) | – | 3.71** (1.46 to 9.40) | – | – | – |
| Sexual behaviours | |||||
| Any unprotected oral sex with regular or casual clients, past month (vs protected oral sex/no oral sex) | – | – | – | – | – |
| Syphilis titre ⩾1 : 8 (vs no syphilis titre ⩾1 : 8) | – | NS | – | – | – |
| Ever had HIV test (vs never had HIV test) | – | – | NS | – | – |
| Drug use | |||||
| Ever use illegal drugs before/during sex (vs never used illegal drugs before/during sex) | 2.42** (1.58 to 3.70) | 2.53* (1.18 to 5.43) | 2.24** (1.25 to 4.03) | 3.04* (1.51 to 6.11) | – |
*p⩽0.05; **p⩽0.01. Dashes (–) refer to variable not included in model. AOR, adjusted odds ratio; BC, Baja California; FSW, female sex worker; MHS, municipal health service; NS, not significant; STI, sexually transmitted infection.