Fig. 3From: Individualized estimation of arterial carbon dioxide partial pressure using machine learning in children receiving mechanical ventilationScatter plot showing the correlation of PaCO2 and EtCO2. The Spearman correlation coefficient was 0.78, and the R2 value was 0.58. The plot reveals a poor correlation between PaCO2 and EtCO2 as PaCO2 increases. The values of those who belong to severe acute respiratory distress syndrome, defined by the oxygenation saturation index ≥ 12, were represented with red dots. OSI: oxygenation saturation index; (PaCO2 - EtCO2): discrepancy between PaCO2 and EtCO2Back to article page