PDA, patent ductus arteriosus, GA gestational age, RSS respiratory
severity score, ANS antenatal steroids, PMA post menstrual age, NCPAP
nasal continuous positive airway pressure, NIPPV nasal intermittent
positive pressure ventilation, VI ventilation index, Fio2 fraction of
inspired oxygen.
a Data are given as median (interquartile range) or
n/N (%)
b Others include high-flow nasal cannula, nasal
cannula, and room air