Table 2.
Random effect parameters and model comparison.
| Cluster level variance | ICC (%) | PCV (%) | Log likelihood | Assumption (chi2(df), p value)) | |
|---|---|---|---|---|---|
| Models for pregnant mothers | |||||
| Null model | 0.067 | 1.99 | Reference | − 36,766.157 | Null model is nested in Model I (LR chi2(9) = 720.08, < 0.001) |
| Model I | 0.065 | 1.94 | 2.98 | − 36,406.115 | Model I is nested in Model II (LR chi2(10) = 204.09, ≤ 0.001) |
| Model II | 0.058 | 1.73 | 10.45 | − 36,304.071 | |
| Model III | 0.057 | 1.70 | 14.92 | − 36,298.683 | Model II is nested in Model III (LR chi2(1) = 10.78, 0.001) |
| Models for non-pregnant mothers | |||||
| Null model | 0.530 | 13.87 | Reference | − 533,346.2 | Null model is nested in Model I (LR chi2(10) = 2577.88, < 0.001) |
| Model I | 0.523 | 13.72 | 1.32 | − 532,057.26 | Model I is nested in Model II (LR chi2 (10) = 1394.50, ≤ 0.001) |
| Model II | 0.517 | 13.58 | 2.45 | − 531,360.01 | |
| Model III | 0.515 | 13.53 | 2.83 | − 531,314.53 | Model II is nested in Model III (LR chi2(1) = 90.95, ≤ 0.001) |
ICC Intra-class Correlation Coefficient, PCV Proportional Change in Variance.