Table 2

 Sexual history and drug use among young women with and without a history of sex work in low income areas of northern California, 1996–8

Variable% of sex workers (95% CI)* (n = 226)% of non-sex workers* (95% CI) (n = 2317)Adjusted OR(95% CI)*†
*All prevalence estimates, 95% confidence intervals, and odds ratios adjusted for survey design.
†Odds ratios adjusted for age, ethnicity, sexual identification, country of birth, education, employment, and monthly income.
Self reported history
    Chlamydia39.6 (33.6 to 46.6)14.8 (12.5 to 17.3)2.7 (2.0 to 3.8)
    Gonorrhoea29.2 (23.0 to 35.5)7.2 (5.6 to 8.8)2.7 (1.7 to 4.3)
    Syphilis11.3 (5.8 to 16.9)1.5 (1.0 to 2.0)4.4 (1.9 to 9.8)
Ever tested for HIV85.3 (80.6 to 90.0)64.3 (61.7 to 66.9)2.1 (1.4 to 3.3)
Median number of lifetime male sexual partners (IQR)25 (10 to 98)4 (1 to 7)1.03 (1.03 to 1.04)
Condom use at last vaginal sex with:
    New partner65.5 (49.6 to 81.5)31.9 (20.9 to 42.9)5.9 (2.4 to 14.1)
    Casual partner55.9 (42.3 to 69.4)49.2 (39.1 to 59.3)1.4 (0.6 to 3.0)
    Steady partner25.2 (18.5 to 31.9)30.4 (26.9 to 33.9)0.8 (0.5 to 1.1)
Protective behaviour (past 6 months)
    Used condoms more93.9 (89.5 to 98.2)82.2 (76.7 to 87.7)3.4 (1.6 to 7.2)
    Washed after sex63.6 (49.7 to 77.5)47.0 (38.7 to 55.2)1.8 (1.1 to 3.2)
    Had only one partner59.0 (46.9 to 71.1)82.1 (76.4 to 87.8)0.3 (0.2 to 0.5)
    Urinated after sex56.9 (40.8 to 73.1)49.9 (42.1 to 57.7)1.1 (0.6 to 2.1)
    Checked partner for sores52.8 (41.6 to 64.1)34.5 (28.6 to 40.5)1.9 (1.1 to 3.3)
Ever had sex with MSM19.5 (13.4 to 25.5)3.5 (2.3 to 4.7)11.1 (5.9 to 20.6)
Ever had sex with IDU32.8 (26.0 to 39.5)7.3 (6.0 to 8.7)6.3 (4.3 to 9.3)
Ever had sex with HIV+ partner6.9 (3.9 to 9.9)0.7 (0.3 to 1.0)7.6 (3.2 to 17.7)
History of sexual coercion64.3 (57.6 to 70.9)20.0 (18.3 to 21.8)6.0 (4.4 to 8.3)
Ever smoked >100 cigarettes83.6 (76.9 to 90.2)33.8 (30.9 to 36.7)6.3 (3.9 to 10.1)
Drug use in past 6 months
    Marijuana65.3 (59.6 to 71.1)30.8 (27.3 to 34.4)3.6 (2.6 to 4.9)
    Cocaine37.3 (27.7 to 46.9)3.9 (2.9 to 4.9)8.7 (5.9 to 12.7)
    Speed14.3 (9.7 to 18.9)3.9 (2.8 to 4.9)4.9 (2.9 to 8.2)
    Heroin11.3 (6.9 to 15.7)0.7 (0.3 to 1.214.8 (6.5 to 33.6)
Drug use before sex
    Alcohol57.4 (49.6 to 65.2)25.0 (22.5 to 27.5)3.2 (2.1 to 4.9)
    Cocaine31.7 (22.3 to 41.1)1.4 (0.8 to 2.0)17.6 (11.4 to 27.2)
    Speed9.1 (5.1 to 13.0)2.0 (1.4 to 2.6)4.7 (2.3 to 9.6)
    Heroin7.9 (4.8 to 11.5)0.4 (0.0 to 0.8)17.4 (5.4 to 55.5)
History of injecting drugs19.7 (13.9 to 25.5)2.4 (1.6 to 3.2)10.6 (6.4 to 17.7)