| Etiologies | Effectif | Percent (%) |
| Perinatal asphyxia | 32 | 46.4 |
| Early-onset neonatal infection | 28 | 40.6 |
| Isolated metabolic disorders | 5 | 7.2 |
| Isolated metabolic disorders* | 4 | 5.8 |
| Total | 69 | 100 |