Sociodemographic characteristics, sexual behaviours, client traits and STI, Mexico-born FSW by migrant status, Tijuana, BC
| Characteristics | Overall sample (n = 471) | BC native (n = 101) 21% | Migrant to BC (n = 370) 79% | p Value |
| Individual traits | ||||
| Age, years | ||||
| 18–34 | 59.9 | 66.3 | 58.1 | |
| 35–64 | 40.1 | 33.7 | 41.9 | 0.14 |
| Has spouse/common-law partner | 32.3 | 37.6 | 30.8 | 0.19 |
| Has dependent children | 92.4 | 91.1 | 92.7 | 0.59 |
| Educational attainment, years | ||||
| 0–6 | 50.5 | 39.6 | 53.5 | |
| 7–20 | 49.5 | 60.4 | 46.5 | 0.01 |
| Owns home | 17.8 | 15.8 | 18.4 | 0.56 |
| Speaks any English | 32.9 | 46.5 | 29.2 | <0.01 |
| Mean no of years worked as FSW (SD) | 4.87 (6.3) | 5.1 (5.9) | 4.8 (6.4) | 0.68 |
| Current work situation | ||||
| Street worker | 42.3 | 57.4 | 38.1 | <0.01 |
| Dance host | 31.6 | 23.8 | 33.8 | 0.06 |
| Bar maid | 17.8 | 12.9 | 19.2 | 0.14 |
| Registered with Tijuana MHS | 28.0 | 15.8 | 31.4 | <0.01 |
| Ever use illegal drugs before/during sex | 34.3 | 47.0 | 30.8 | <0.01 |
| Client traits | ||||
| Mean no of regular male clients past month (SD) | 5.3 (10.6) | 5.8 (10.9) | 5.2 (10.5) | 0.63 |
| Mean no of casual male clients past month (SD) | 15.4 (25.3) | 12.6 (15.7) | 16.2 (27.3) | 0.22 |
| Male clients use drugs | ||||
| None | 18.5 | 17.8 | 18.7 | |
| Any | 81.5 | 82.2 | 81.4 | 0.85 |
| Male clients inject drugs | ||||
| None | 49.3 | 56.4 | 47.3 | |
| Any | 50.7 | 43.6 | 52.7 | 0.10 |
| Financial reliance on male clients | ||||
| None | 42.7 | 45.5 | 41.9 | |
| Any | 57.3 | 54.5 | 58.1 | 0.51 |
| Has US clients | 77.5 | 83.2 | 76.0 | 0.12 |
| Sexual behaviours | ||||
| Number of condoms carried at baseline interview | ||||
| None | 88.8 | 94.1 | 87.3 | |
| Any | 11.3 | 5.9 | 12.7 | 0.06 |
| Access to free condoms | ||||
| Never | 57.3 | 53.5 | 58.4 | |
| Sometimes | 31.6 | 40.6 | 29.2 | |
| Often/always | 11.0 | 5.9 | 12.4 | 0.04 |
| Unprotected vaginal sex with regular or casual clients, past month | 97.7 | 100 | 97.0 | 0.08 |
| Unprotected anal sex with regular or casual clients, past month | 16.8 | 21.8 | 15.4 | 0.13 |
| Unprotected oral sex with regular or casual clients, past month | 47.1 | 54.5 | 45.1 | 0.10 |
| Unprotected vaginal sex with spouse/common law partner* | 73.7 | 65.8 | 76.3 | 0.20 |
| Unprotected anal sex with spouse/common law partner* | 21.7 | 29.0 | 19.3 | 0.22 |
| Unprotected oral sex with spouse/common law partner* | 51.3 | 55.3 | 50.0 | 0.57 |
| Condom use during anal sex, past 6 months | ||||
| Never/sometimes | 21.7 | 32.7 | 18.7 | |
| Often/always/do not have anal sex | 78.3 | 67.3 | 81.4 | <0.01 |
| Condom use during oral sex, past 6 months | ||||
| Never/sometimes | 47.8 | 53.5 | 46.2 | |
| Often/always/do not have oral sex | 52.2 | 46.5 | 53.8 | 0.20 |
| Spouse/common law partner has other sexual partner*† | 47.3 | 50.0 | 46.4 | 0.74 |
| Ever tested for HIV | 65.8 | 56.4 | 68.4 | 0.03 |
| STI | ||||
| Tested HIV positive | ||||
| No | 92.5 | 89.1 | 93.4 | |
| Yes | 7.5 | 10.9 | 6.6 | 0.15 |
| Test positive for chlamydia | ||||
| No | 83.2 | 81.0 | 83.8 | |
| Yes | 16.9 | 19.0 | 16.3 | 0.52 |
| Test positive for gonorrhoea | ||||
| No | 91.0 | 87.0 | 92.2 | |
| Yes | 9.0 | 13.0 | 7.8 | 0.11 |
| Syphilis titre ⩾1 : 8 | ||||
| No | 85.8 | 81.8 | 86.8 | |
| Yes | 14.3 | 18.2 | 13.2 | 0.21 |
| Tested positive for any of above STI | ||||
| No | 66.5 | 57.6 | 68.9 | |
| Yes | 33.6 | 42.4 | 31.1 | 0.03 |
Comparisons were made between Baja California (BC) migrants and BC natives. Estimates may not add to 100% due to rounding. *Restricted to women with a spouse/common law partner. †During the duration of the relationship. FSW, female sex worker; MHS, municipal health service; STI, sexually transmitted infection.