|  | Group 1 (n = 131) | Group 2 (n = 128) | Group 3 (n = 539) | Group 4 (n = 220) | ||||
---|---|---|---|---|---|---|---|---|---|
HIV screening centres | HIV screening centres | Hospitals | Health centres | ||||||
HIV-positive women | HIV-negative women | HIV status unknown | HIV status unknown | ||||||
 |  | Crude OR | 95 % CI | Crude OR | 95 % CI | Crude OR | 95 % CI | Crude OR | 95 % CI |
Age (in years)a | Â | 0.99 | 0.95 - 1.03 | 1.11** | 1.00 - 1.24 | 1.02 | 0.98 - 1.07 | 1.02 | 0.97 - 1.06 |
Age of menarche (in years)a | Â | 0.94 | 0.67 - 1.30 | 2.87 | 0.36 - 23.07 | 1.03 | 0.82 - 1.30 | 0.80 | 0.55 - 1.15 |
Age of first sexual intercourse | Â | 0.89* | 0.76 - 1.05 | 1.09 | 0.86 - 1.38 | 1.01 | 0.90 - 1.13 | 0.84* | 0.68 - 1.06 |
Marital status | married | 1.00 | Â | 1.00* | Â | 1.00 | Â | 1.00 | Â |
 | single | 0.56 | 0.21 - 1.48 | 0.82 | 0.08 - 8.18 | 2.23 | 0.74 - 6.71 | 1.23 | 0.24 - 6.38 |
 | widowed | 1.16 | 0.45 - 2.94 | 8.33 | 0.41 - 170.67 | 1.44 | 0.44 - 4.69 | § |  |
 | divorced | 0.75 | 0.20 - 2.79 | § |  | 1.71 | 0.36 - 8.10 | 1.58 | 0.18 - 14.28 |
Formal employment | Â | 0.75 | 0.35 - 1.61 | 1.74 | 0.28 - 10.79 | 1.92* | 0.73 - 5.03 | 0.28* | 0.06 - 1.38 |
Number of pregnancies | 0 - 2 | 1.00 | Â | 1.00** | Â | 1.00 | Â | 1.00 | Â |
 | 3 - 5 | 1.31 | 0.47 - 3.70 | 1.96 | 0.14 - 18.04 | 1.06 | 0.33 - 3.38 | 0.28 | 0.03 - 2.80 |
 | 6 or more | 1.31 | 0.49 - 3.51 | 10.01 | 1.18 - 75.36 | 0.66 | 0.22 - 1.93 | 0.83 | 0.19 - 3.59 |
Number of childbirths | 0 - 2 | 1.00* | Â | 1.00** | Â | 1.00 | Â | 1.00 | Â |
 | 3 - 5 | 1.08 | 0.96 - 5.77 | 8.65 | 1.34 - 55.65 | 0.31 | 0.15 - 1.70 | 0.70 | 0.11 - 4.31 |
 | 6 or more | 1.18 | 0.45 - 3.06 | § |  | 1.00 | 0.38 - 2.65 | 1.15 | 0.25 - 5.30 |
Abortion | Â | 1.70* | 0.77 - 3.78 | 1.43 | 0.23 - 8.85 | 2.09* | 0.69 - 6.35 | 1.17 | 0.31 - 4.48 |
Three or more lifetime sexual partners | Â | 1.26 | 0.58 - 2.74 | 2.18 | 0.24 - 20.10 | 2.27* | 0.92 - 5.57 | 0.91 | 0.17 - 4.82 |
Hormonal contraception |  | 1.21 | 0.49 - 3.00 | 3.17 | 0.32 - 31.40 | 1.12 | 0.40 - 3.12 | § |  |
Alcohol consumption | Â | 0.30 | 0.04 - 2.49 | 2.46 | 0.39 - 15.51 | 1.57 | 0.64 - 3.87 | 4.62* | 0.86 - 24.75 |
Plants for vaginal care |  | †|  | †|  | 3.59* | 0.99 – 13.05 | 2.15 | 0.56 – 8.31 |
Chemicals for vaginal care |  | 0.63 | 0.26 - 1.55 | §* |  | 0.49 | 0.11 - 2.13 | 2.06 | 0.39 - 10.95 |