Table 3.
Comparison between male and female infants (who survived to 7 days), who received PNS
| Male n = 1348 | Female n = 996 | P value | |
|---|---|---|---|
| Gestational age | 25.0 (24.14–26.14) | 24.85(24.14–26.14) | 0.078 |
| Birth weight (grams) | 721 (630–830) | 656.5 (585–760) | < 0.001 |
| Birth weight (z score) | −0.606 (−1.08– −0.08) | −0.489 (−1.03– −0.06) | 0.078 |
| Antenatal steroids | 1181 (87.6%) | 879 (88.3%) | 0.706 |
| Surfactant given | 1283 (95.3%) | 939 (94.4%) | 0.932 |
| Died before NNU discharge | 237 (17.6%) | 151 (15.2%) | 0.119 |
| Discharge weight (grams) | 3130 (2430–3837) | 2980 (2299–3631.25) | 0.002 |
| Discharge weight (z score) | −1.70 (−2.59– −0.883) | −1.63 (−2.48– −0.85) | 0.172 |
| PMA discharge | 42.13 (39.32–45.55) | 41.93 (39.01–45.42) | 0.392 |
| Mechanical respiration (days) | 36.0 (24–51) | 35.0 (23–50.75) | 0.156 |
| Respiratory support at 28 days | 1264 (93.8%) | 934 (93.8%) | 0.868 |
| Surgery for NEC | 304 (22.6%) | 197 (19.8%) | 0.105 |
| TPN (days) | 25.0 (15–41) | 24.0 (15–38) | 0.174 |
| IVH grade 3, or greater | 276 (20.5%) | 158 (15.9%) | 0.018 |
| ROP treatment | 428 (31.8%) | 292 (29.3.8%) | 0.207 |
| Cystic PVL | 83 (6.2%) | 66 (6.6%) | 0.859 |
| Including only infants surviving to 36 weeks, n = 9614. Receiving PNS n = 2067 | |||
| Male n = 1183 | Female n = 884 | P value | |
| BPD | 1087 (91.9%) | 809 (91.5%) | 0.763 |
| Home on O2 | 582 | 471 | 0.165 |
Data are demonstrated as n (%) or median (IQR)
PMA post menstrual age, NEC necrotising enterocolitis, TPN total parenteral nutrition, IVH intraventricular hemorrhage, ROP retinopathy or prematurity, PVL periventricular leukomalacia, BPD bronchopulmonary dysplasia