Study infants
| Early (n=24) | Delayed (n=22) | |
| Male:female | 14:10 | 12:10 |
| Gestation (weeks/days) | 28/0 (26/0, 30/0) | 27/3 (25/5, 29/6) |
| Birthweight (g) | 945 (745, 1560) | 946 (420, 1570) |
| Antenatal steroids | 23 | 22 |
| Antenatal thyrotropin releasing hormone | 12 | 14 |
| Delivery by caesarean section | 16 | 13 |
| CRIB score | 2 (1,10) | 3.5 (0,16) |
| Surfactant administration | 21 | 21 |
| Total fluid intake in first week (ml/kg) | 1084 (804, 1306) | 1087 (740, 1377) |
| Total energy intake in first week (kcal/kg) | 392 (302, 579) | 461 (257, 617) |
| a:A ratio day 1 | 0.40 (0.12, 0.72) | 0.39 (0.10, 0.70) |
| Ventilation (days) | 3 (0, 68) | 3 (0, 40) |
Values are total or median (range). Differences are all non-significant (p>0.05).