Fig. 2From: Clinical characteristics and a decision tree model to predict death outcome in severe COVID-19 patientsROC curves for the decision tree model and each biomarker. A ROC curve for the decision tree model; B ROC curve for LDH; C ROC curve for NLR; D ROC curve for CRP. ROC, receiver operating characteristic; NLR, neutrophil-to-lymphocyte ratio; CRP, C-reactive protein; LDH, lactic dehydrogenase; AUC, area under the curve of ROCBack to article page