Patient demographics
| Control (n=32) | Nebulised surfactant (n=32) | P values | |
| Gestation (weeks) | 31.4 (1.4) | 31.4 (1.4) | 0.841 |
| Birth weight (g) | 1645 (409) | 1562 (399) | 0.415 |
| Birth weight Z score31 | 0.00 (0.81) | −0.29 (0.69) | 0.129 |
| Male, n (%) | 26 (81.3) | 22 (68.8) | 0.387 |
| Antenatal steroids | |||
| Any steroids, n (%) | 29 (90.6) | 31 (96.9) | 0.613 |
| Complete course, n(%) | 16 (50.0) | 21 (65.6) | 0.311 |
| Caesarean section, n (%) | 23 (71.9) | 26 (81.3) | 0.556 |
| Apgar 1 min | 7 (2) | 7 (2) | 0.791 |
| Apgar 5 min | 8 (1) | 8 (1) | 0.706 |
| Age at first nebulisation (min) | – | 178 (52) | – |
Values are mean (SD).