No | 34 | 15 | 17 | 14 |
Gestational age (weeks) | 30 (25–32) | 26 (24–30) | 26 (24–30) | 27 (24–29) |
Birthweight (g) | 1375 (730–1960) | 1060 (660–1690) | 780 (470–1580) | 676 (550–1120) |
Antenatal steroids | 26 (76.5) | 13 (86.7) | 14 (82.4) | 12 (85.7) |
Small for gestational age | 5 (14.7) | 0 (0) | 4 (23.5) | 5 (35.7) |
Male | 11 (32.4) | 8 (53.3) | 13 (76.5) | 11 (78.6) |
Surfactant | 18 (52.9) | 10 (66.7) | 15 (88.2) | 14 (100) |
Duration of ventilation (days) | 1 (0–6) | 3 (0–40) | 14 (1–40) | 39 (1–161) |
Oxygen dependency (days) | 4 (0–27) | 38 (29–72) | 82 (44–204) | 141 (46–259) |
Septic episodes per baby | 1 (0–3) | 1 (0–9) | 2 (0–7) | 2 (2–6) |
Postnatal steroids | 0 (%) | 0 (%) | 11.76 (%) | 50 (%) |