Utility of Pulse Oximetry Oxygen Saturation (SpO₂) with Incorporation of Positive End-Expiratory Pressure (SpO₂10/FiO₂PEEP) for Classification and Prognostication of Patients with Acute Respiratory Distress Syndrome

Figure 5

ROC curve depicting the discriminant function of S/FP10 (B) to be categorized as severe ARDS as per Berlin definition (AUC: 0.925, , cut-off value ≤116, CI: [0.862–0.988]). S/FP10 (B) = (SpO₂10)/(FiO₂PEEP) (the values obtained at one hour after intubation and mechanical ventilation).