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 6

ROC curve depicting the discriminant function of S/FP10 (B) to be categorized as mild ARDS as per Berlin definition (AUC: 0.773, , cut-off value ≥190, sensitivity: 69%, specificity: 74%, 95% CI: [0.672–0.875]. S/FP10 (B) = (SpO₂10)/(FiO₂PEEP) (the values obtained at one hour after intubation and mechanical ventilation).