| Gestational age (amenorrhea weeks) | N | Percentage (%) |
| [25 - 28] | 44 | 1.47 |
| [28 - 32] | 620 | 20.74 |
| ]32 - 37] | 1217 | 40.72 |
| [37 - 42] | 1108 | 37.07 |
| Total | 2989 | 100 |