| Gestational parameter | NBW (n = 65) | LBW (n = 45) | VLBW (n = 45) | ELBW (n = 45) | P value |
| Gestational age* (weeks) | 37.4 ± 4.2 | 36.1 ± 2.8a | 32.8 ± 3.9ab | 29.5 ± 3.0b | 0.0026 |
| Survival (%) | 100 | 100 | 86.6 | 26.6 | - |
| SGA (%) | 0 | 0 | 53.8 | 25 | - |
| AGA (%) | 100 | 80 | 38.5 | 75 | - |
| LGA (%) | 0 | 20 | 7.7 | 0 | - |
| Length of hospital stay* (days) | 3.2 ± 1.3 | 8.5 ± 0.7b | 36.8 ± 12.0a | 25 ± 7.6ab | 0.0012 |