Predictors of STI among sex workers: bivariate and multivariable analyses
| STI testing | STI positive | Odds ratio (95% CI) | ||
|---|---|---|---|---|
| % (n) | % (n) | Unadjusted | Adjusted* | |
| *Final multivariable model built using forward stepwise technique, including variables significant at p<0.2 in bivariate analysis. The final multivariable model adjusted for age, race/ethnicity, educational level, category of sex work, current drug use, and history of sex work related violence. | ||||
| All participants (n = 783) | 58.2 (456) | 23.0 (105) | ||
| Predictor variable (n) | ||||
| Ethnicity (783) | ||||
| African-American (68) | 47.1 (32) | 50.0 (16) | 3.8 (1.8 to 7.8) | 3.3 (1.3 to 8.3) |
| White (457) | 58.4 (267) | 19.9 (53) | 0.7 (0.4 to 1.0) | |
| Latino/a (79) | 62.0 (49) | 28.6 (14) | 1.4 (0.7 to 2.7) | |
| Asian-Pacific Islander (67) | 61.1 (41) | 17.1 (7) | 0.7 (0.3 to 1.5) | |
| Native American (14) | 50 (7) | 14.3 (1) | 0.6 (0.1 to 4.6) | |
| Mixed/other (98) | 61.2 (60) | 23.3 (14) | 1.0 (0.5 to 1.9) | |
| Gender (783) | ||||
| Male (187) | 60.4 (113) | 31.9 (36) | 1.9 (1.2 to 3.0) | 1.9 (1.0 to 3.6) |
| Female (419) | 59.9 (251) | 17.9 (45) | 0.5 (0.3 to 0.8) | |
| MTF (126) | 57.1 (72) | 25.0 (18) | 1.1 (0.6 to 2.0) | |
| Other (51) | 39.2 (20) | 30.0 (6) | 1.5 (0.5 to 3.9) | |
| Education (743) | ||||
| Middle school or less (52) | 55.8 (29) | 13.8 (4) | 0.5 (0.2 to 1.5) | |
| High or technical school (336) | 55.4 (186) | 21.5 (40) | 0.9 (0.6 to 1.4) | |
| College or grad school (355) | 61.7 (219) | 25.1 (55) | 1.3 (0.8 to 1.9) | |
| Type of sex work (ever) | ||||
| Independent only (218) | 56.9 (124) | 28.2 (35) | 1.5 (0.9 to 2.4) | |
| Collective and independent (336) | 62.5 (210) | 24.8 (52) | 1.2 (0.8 to 1.8) | |
| Collective only (143) | 55.9 (80) | 11.2 (9) | 0.4 (0.2 to 0.8) | 0.4 (0.1 to 0.9) |
| Violence | ||||
| Sex work related violence (282) | 1.9 (1.1 to 3.3) | |||
| Domestic violence (418) | 56.7 (237) | 24.9 (59) | 1.2 (0.8 to 1.9) | |
| Legal history | ||||
| History of arrest (374) | 54.5 (204) | 27.4 (56) | 1.6 (1.0 to 2.4) | |
| Sex work related conviction (62) | 56.4 (35) | 28.6 (10) | 1.4 (0.6 to 3.0) | |
| Drug use | ||||
| Tobacco use (current) (348) | 55.2 (192) | 27.6 (53) | 1.6 (1.0 to 2.4) | |
| Illegal drug use (current) (299) | 61.5 (184) | 21.2 (39) | 0.8 (0.5 to 1.3) | |
| Injection drug use (current) (60) | 51.7 (31) | 22.6 (7) | 1.0 (0.4 to 2.3) | |