| Variables | Fixed effect 1 (A) | Fixed effect 2 (B) | Fixed effect 3 (C) | Fixed effect 4 (D) |
| Income poverty | 0.415*** | 0.321*** | 0.209* | 0.140 |
| SE | 0.063 | 0.082 | 0.118 | 0.134 |
| Mean duration of breastfeeding | −1.018 | −1.271 | −1.775 | |
| SE | 1.413 | 1.465 | 1.534 | |
| Fully immunized (12 - 23 months) | −0.156* | −0.142 | −0.135 | |
| SE | 0.088 | 0.091 | 0.091 | |
| Mother’s average years of schooling | −0.839 | −0.557 | ||
| SE | 0.853 | 0.890 | ||
| % have access to safe drinking water | −3.873 | −3.456 | ||
| SE | 6.203 | 6.199 | ||
| PDS coverage | −0.000 | −0.001 | ||
| SE | 0.000 | 0.000 | ||
| Per capita public expenditure on health | −0.100 | |||
| SE | 0.009 | |||
| Number of observations | 45 | 45 | 45 | 45 |
| Chi2 | 43.05 | 16.02 | 8.54 | 7.52 |
| LM test p value | 0.0887 | |||
| Hausman test p value | 0.0412 | |||