Characteristics of very low birthweight neonates and subgroups
| Group I | Group II | |
|---|---|---|
| Unless otherwise indicated, values are mean (range). Group I, birth weight ≤ 1000 g; group II, birth weight 1001–1500 g. | ||
| Number | 760 | 1260 |
| Gestational age (weeks) | 27 (24–32) | 31 (26–37) |
| Birth weight (g) | 734 (450–1000) | 1251 (1005–1500) |
| Congenital heart disease | 23 (3%) | 24 (1.9%) |