FIGURE 1.

Receiver‐operating characteristic (ROC) curve for predicting the severity of COVID‐19 using NLR, LDH, ferritin, AST, ALT, and procalcitonin at admission. ALT, alanine transaminase; AST, aspartate transaminase; LDH, lactate dehydrogenase; NLR, neutrophil‐to‐lymphocyte ratio