Table 3 Test of proportional-hazards assumption (R version 3.6.1)
| Predictor variable | Chisq | Df | Prob>Chisq |
|---|---|---|---|
| Wealth index combined | 0.74 | 2 | 0.69 |
| Mother’s age | 0.07 | 1 | 0.79 |
| Mother’s education level | 0.88 | 3 | 0.83 |
| Water drink source | 0.9 | 1 | 0.34 |
| Place of residence | 2.2 | 1 | 0.14 |
| Mother’s marital status | 2.5 | 2 | 0.28 |
| Gender of child status | 0.0022 | 1 | 0.96 |
| Child vaccination status | 0.62 | 1 | 0.43 |
| Global test | 9 | 12 | 0.70 |