| | Factor | Unadjusted analysis
Odds ratio with 95% confidence intervals | Full adjusted analysis
Odds ratio with 95% confidence intervals | Backstep analysis
Odds ratio with 95% confidence intervals |
| | Age | 0.86 (0.80-0.91, ) | 0.91 (0.84-0.99, ) | 0.91 (0.84-0.98, ) | | Being employed | 0.29 (0.07-0.83, ) | 0.19 (0.03-0.79, ) | 0.30 (0.06-1.04, ) | | Having a regular sex partner | 0.52 (0.16-2.30, ) | 0.91 (0.19-5.61, ) | — | | Having an HIV-positive partner | 0.71 (0.31-1.62, ) | 1.21 (0.42-3.47, ) | — | | Not knowing partner’s HIV status | 1.37 (0.49-3.56, ) | 1.05 (0.26-3.83, ) | — | | Cohabiting with partner | 0.32 (0.12-0.76, ) | 0.90 (0.25-2.99, ) | — | | Age of 1st sex, 15-20 yrs | 0.16 (0.04-0.68, ) | 0.26 (0.05-1.44, ) | 0.23 (0.05-1.24, ) | | Age of 1st sex, 21+ yrs | 0.03 (0.00-0.20, ) | 0.09 (0.01-0.78, ) | 0.08 (0.01-0.63, ) | | Having 2-4 lifetime number of sex partners | 1.67 (0.71-4.39, ) | 2.69 (0.88-9.37, ) | — | | Having >4 lifetime sex partners | 0.90 (0.26-2.94, ) | 1.25 (0.24-6.09, ) | — | | Partner does not have other partners | 0.42 (0.13-1.07, ) | 0.40 (0.10-1.34, ) | — | | Partner has other partners | 0.67 (0.25-1.57, ) | 0.32 (0.08-1.04, ) | — | | Used a condom during last | 0.62 (0.25-1.36, ) | 0.50 (0.16-1.44, ) | — | | Having a partner who is circumcised | 5.03 (1.74-21.32, ) | 4.28 (1.27-20.05, ) | 3.86 (1.21-17.27, ) | | Trimester pregnancy 2nd | 0.65 (0.18-3.11, ) | 1.31 (0.24-9.36, ) | — | | Trimester pregnancy 3rd | 0.79 (0.25-3.53, ) | 1.32 (0.25-9.26, ) | — | | Having been previously treated for STIs | 0.19 (0.04-0.54, ) | 0.12 (0.02-0.44, ) | 0.16 (0.03-0.51, ) | | Engages in intravaginal practices | 0.48 (0.03-2.44,) | 0.23 (0.01-2.30, ) | — | | Perceived one’s self at risk for STIs | 2.01 (0.91-4.91, ) | 2.41 (0.89-7.14, ) | 2.85 (1.16-7.68, ) | | Being N. gonorrhoeae positive | 10.17 (3.39-29.66, ) | 11.93 (2.60-60.62, ) | 9.16 (2.19-40.18, ) |
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