Fig. 1.

Receiver Operating Characteristic Curve and Area Under the Curve (AUC) for: a Probability of survival score (POS) for all neonates. b Partial pressure of carbon dioxide in the preductal capillary blood (PcCO₂) for all neonates on admission. c Highest ratio of partial pressure of oxygen in the preductal capillary blood to fraction of inspired oxygen (PcO₂/FIO₂) during the first 24 h after admission for neonates who survived more than 24 h after admission