Development Data Set (N = 4222) | Validation Data Set (N = 2110) | ||||||||
---|---|---|---|---|---|---|---|---|---|
Risk factor | Coefficient | Odds Ratio (95% CI) | P-value | Score (coefficient*10) | Coefficient | Odds Ratio (95% CI) | P-value | Score (coefficient*10) | |
Age of mother (years) | < 20 | 0 | 1 | - | 0 | 0 | 1 | - | 0 |
20–24 | 0.74 | 2.10 (1.50–2.94) | < 0.001 | 7 | 0.85 | 2.35 (1.54–3.58) | < 0.001 | 9 | |
Planned pregnancy | No | 0.67 | 1.95 (1.41–2.69) | 7 | |||||
Yes | 0 | 1 | - | 0 | |||||
Knowledge of weeks pregnant when received last HIV test result | No | 0 | 1 | - | 0 | 0 | 1 | - | 0 |
Yes | 0.65 | 1.92 (1.18–3.11) | 0.008 | 7 | 1.16 | 3.18 (1.52–6.60) | 0.002 | 12 | |
Knowledge of HIV status of child’s father | No | 0.81 | 2.25 (1.71–2.96) | < 0.001 | 8 | 0.75 | 2.12 (1.52–2.96) | < 0.001 | 8 |
Yes | 0 | 1 | - | 0 | 0 | 1 | - | 0 | |
Knowledge of breastfeeding as a mode of MTCT | No | 0.77 | 2.16 (1.49–3.11) | < 0.001 | 8 | 0.78 | 2.19 | 0.001 | 8 |
Yes | 0 | 1 | - | 0 | 0 | 1 | - | 0 | |
Knowledge of PMTCT programme | No | 0 | 1 | - | 0 | 0 | 1 | - | 0 |
Yes | 0.84 | 2.31 (1.53–3.49) | < 0.001 | 8 | 0.98 | 2.65 (1.53–4.60) | 0.001 | 10 | |
Number of pregnancies | 1 | 0 | 1 | - | 0 | 0 | 1 | - | 0 |
> = 2 | 0.45 | 1.57 (1.19–2.06) | 0.001 | 4 | 0.41 | 1.51 (1.07–2.12) | 0.019 | 4 | |
Type of house | Brick/cement | 0 | 1 | - | 0 | ||||
Informal | 0.40 | 1.50 (1.04–2.14) | 0.028 | 4 |