sB7H3 in Children with Acute Appendicitis: Its Diagnostic Value and Association with Histological Findings

Figure 4

ROC curves and evaluation indexes of sB7H3 and CRP for the diagnosis of appendicitis with perforation. The ROC curve is drawn by SPSS, and Youden’s index is calculated by the corresponding coordinate value on the curve. The maximum value of Youden’s index is the ideal cutoff value. AUROC: area under the curve; PPV: positive predictive value; NPV: negative predictive value; +LR: positive likelihood ratios; -LR: negative likelihood ratios.