Fig 2. ROC curve for each SpO₂ prediction at 5 min following a ventilator setting change of the best predictive model (bootstrap aggregation of complex decision trees (BACDT) classifiers on Test Dataset 3).

Class 1: _{5 min}SpO₂ < 84%, class 2: _{5 min}SpO₂ between 85% and 91%, class 3: _{5 min}SpO₂ between 92% and 100%. AUC: area under the curve, 95IC: 95% confidence interval.