| Indicators | Gestation term (week) | |
| 28 - 31 (n = 22) | 31 - 36 (n = 62) | |
| Body weight at birth (g) | 1155.625 ± 40.830 | 1333.72 ± 62.35 |
| Body length at birth (cm) | 36.25 ± 0.96 | 40.043 ± 0.699 |
| Head circumference (cm) | 25.375 ± 0.380 | 27.390 ± 0.319 |
| Chest circumference (cm) | 23.50 ± 0.73 | 25.043 ± 0.460 |