Table 1. Model comparison based on the log-likelihood and Akaike Information Criterion (AIC; smaller is better).
PANC denotes the HIV prevalence proportion among pregnant women obtained from surveillance at antenatal care (ANC) clinics. Other auxiliary predictors are: Formal = formal dwellings (%); DR = dependency ratio; SEQ = socio-economic quintile; MMR = maternal mortality rate; HFB = births in health-care facilities (%). Covariance structures (Cov) are independence (Ind) or simultaneously autoregressive (SAR).
| Model | Predictor(s) | Cov | Log-likelihood | AIC |
|---|---|---|---|---|
| 1 | logit(PANC) | Ind | −23.96 | 53.92 |
| 2 | logit(PANC) + Formal | Ind | −23.42 | 54.85 |
| 3 | logit(PANC) + DR | Ind | −22.37 | 52.73 |
| 4 | logit(PANC) + SEQ | Ind | −22.84 | 59.68 |
| 5 | logit(PANC) + MMR | Ind | −23.75 | 55.51 |
| 6 | logit(PANC) + Formal + DR | Ind | −22.36 | 54.73 |
| 7 | logit(PANC) + Formal + DR + MMR | Ind | −22.34 | 56.67 |
| 8 | logit(PANC) + Formal + DR + MMR + HFB | Ind | −22.20 | 58.39 |
| 9 | Formal + DR + MMR + HFB | Ind | −37.81 | 87.63 |
| 10 | logit(PANC) | SAR | −23.95 | 55.91 |
| 11 | logit(PANC) + DR | SAR | 22.37 | 54.73 |
| 12 | logit(PANC) + Formal + DR + MMR + HFB | SAR | −31.80 | 77.61 |