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. 2021 Feb 19;8:629296. doi: 10.3389/fmed.2021.629296

Figure 3.

Figure 3

Comparison of receiver operating characteristic curves of laboratory models for disease grading and prognosis of COVID-19. (A,B) ROC curves for the classification of severe and non-severe medical conditions (A), and the prediction of 60-day survival probability (B). (C) Prognostic nomogram based on IL-6 for predicting survival probability. AUC, area under the curve; BUN, blood urea nitrogen; CVD, cerebrovascular disease; α-HBDH, α-hydroxybutyrate dehydrogenase; IL-6, interleukin-6; NLR, neutrophil-to-lymphocyte ratio; PTA, prothrombin activity; ROC, receiver operating characteristic.