Fig. 3From: Prediction of high-flow nasal cannula outcomes at the early phase using the modified respiratory rate oxygenation indexThe ROC curve of the ROX, mROX, ROX-HR, and mROX-HR indices for predicting HFNC success. ROX, SpO2/FiO2 (%) to RR (breaths/min); mROX, PaO2/FiO2(%) to RR(breaths/min); ROX-HR,ROX/HR*100; mROX-HR, mROX /HR*100; ROC: operating characteristic curveBack to article page