Study population
During the study period, 665 cases were included. A total of 85 infants received escalated care, of which 34 (40%) were treated with HFNC, 2 (2.4%) received non-invasive ventilation, 6 (7.6%) were mechanically ventilated, and 43 (50%) received conventional oxygen therapy. The characteristics of the infants who did and did not receive escalated care and the bivariable associations between postulated predictors and escalated care appear in Table 1.