| Maternals and neonatals factors | Effectif | p |
| Newborns’ age | ||
| <7 days | 323 | 0.000 |
| >7 days | 32 |
|
| Sex | ||
| Male | 215 | 0.635 |
| Femal | 140 |
|
| Pathway of delivery | ||
| Cesarean section | 262 | 0.711 |
| Lower way | 93 |
|
| Gestationnal age | ||
| Premature | 35 | 0.157 |
| Term | 297 |
|
| Post-term | 18 |
|
| Born weight |
|
|
| <2500 g | 54 | 0.652 |
| >2500 g | 301 |
|
| Mother’s parity |
|
|
| Primipara | 132 | 0.157 |
| Multipare | 223 |
|