| | 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 | 0.89 (0.81-0.96, ) | 0.84 (0.72-0.95, ) | 0.89 (0.80-0.98, ) | | Being employed | 0.99 (0.27-2.93, ) | 1.58 (0.30-7.22, ) | — | | Married yes | 0.97 (0.15-3.62, ) | 2.09 (0.16-21.64, ) | — | | Having an HIV-positive partner | 1.02 (0.26-4.18, ) | 1.80 (0.38-9.51, ) | 1.79 (0.41-8.78, ) | | Not knowing partner’s HIV status | 4.75 (1.38-18.74, ) | 6.72 (1.44-37.95, ) | 5.73(1.35-28.71, ) | | Cohabiting with partner | 0.49 (0.13-1.42, ) | 1.33 (0.23-6.68, ) | — | | Age of 1st sex, 15-20 yrs | 0.46 (0.08-8.81, ) | 1.05 (0.11-28.79, ) | — | | Age of 1st sex, 21+ yrs | 0.31 (0.04-6.64, ) | 1.80 (0.09-70.09, ) | — | | Having 2-4 lifetime number of sex partners | 1.73 (0.50-7.94, ) | 1.65 (0.37-9.34, ) | — | | Having >4 lifetime sex partners | 1.69 (0.36-8.78, ) | 1.65 (0.23-12.77, ) | — | | Partner does not have other partners | 0.24 (0.01-1.37, ) | 0.11 (0.00-1.13, ) | 0.14 (0.01-1.07, ) | | Partner has other partners | 2.37 (0.82-6.96, ) | 3.67 (0.95-15.58, ) | 3.91 (1.13-14.65, ) | | Used a condom during last | 0.43 (0.10-1.36, ) | 0.47 (0.08-1.97, ) | — | | Having a partner who is circumcised | 2.14 (0.67-9.46, ) | 1.29 (0.28-7.77, ) | — | | Trimester pregnancy 2nd | 0.29 (0.06-1.56, ) | 0.15 (0.02-1.12, ) | 0.16 (0.03-1.03, ) | | Trimester pregnancy 3rd | 0.35 (0.10-1.66, ) | 0.14 (0.02-0.90, ) | 0.13 (0.02-0.76, ) | | Having been previously treated for STIs | 0.89 (0.27-2.50, ) | 2.33 (0.55-9.84, ) | — | | Engages in intravaginal practices | 2.35 (0.35-9.16, ) | 5.10 (0.61-32.40, ) | 5.83 (0.76-31.51, ) | | Perceived one’s self at risk for STIs | 1.44 (0.51-4.66, ) | 1.29 (0.33-5.74, ) | — | | Being C. trachomatis positive | 6.52 (2.22-18.49, ) | 7.95 (1.90-36.62, ) | 6.09 (1.73-22.03, ) |
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