Overall | 436 | 30 (6.9) |
Gestation |
24–32 weeks | 120 | 9 |
33–36 weeks | 316 | 21 |
Birth weight | | |
⩽1500 g | 83 | 6 |
>1500 g | 353 | 24 |
Sex |
Male | 229 | 13 (5.7) |
Female | 207 | 17 (8.3) |
Multiple gestation | | |
Singleton | 355 | 23 (6.5) |
Multiple | 81 | 7 (8.6) |
Assisted ventilation* | | |
Yes | 111 | 14 (12.6) |
No | 325 | 16 (4.9) |
Oxygen therapy | | |
⩾28 days | 43 | 4 (9.5) |
<28 days | 393 | 26 (6.6) |
Oxygen dependency at 36 weeks of post-menstrual age* | | |
Yes | 28 | 3 (10.7) |
No | 408 | 27 (6.6) |
Steroids for chronic lung disease* | | |
Yes | 34 | 3 (9.1) |
No | 402 | 27 (6.7) |
Home oxygen therapy* | | |
Yes | 11 | 3 (27.3) |
No | 425 | 27 (6.4) |
Discharge from neonatal unit | | |
May–October | 388 | 27 (7.0) |
November–April | 48 | 3 (6.4) |