Demographic data and characteristics of study participants
| Participants, n | 50 |
| Male, n (%) | 29 (58) |
| Female, n (%) | 21 (42) |
| GA at birth, w+d | |
| Mean (SD) | 34+0 (4.9) |
| PMA at study—full weeks | |
| Median (IQR) | 33 (32–38) |
| PNA age, days | |
| Median (IQR) | 1 (0–4) |
| Weight, g | |
| Median (IQR) | 1948 (1517–3442) |
| FiO2, % | |
| Median (IQR) | 21 (21–21.3) |
| Saturation, % | |
| Mean (SD) | 97 (3) |
| CPAP level, cmH20 | |
| Mean (SD) | 4.0 (0.7) |
| CPAP duration, hours | |
| Median (IQR) | 31 (9.8–96.8) |
CPAP, continuous positive airway pressure; GA, gestational age; PMA, postmenstrual age; PNA, postnatal age.