ROC analysis to determine the accuracy of MRE and APRI in predicting METAVIR fibrosis stage in patients with HBV or HCV.

MRE = MR Elastography; Az = area under the curve; kPa = kilopascal; Sn, sensitivity; Sp, specificity; PPV, positive predictive value; NPV, negative predictive value; +LR, positive likelihood ratio; -LR, negative likelihood ratio;Concordance represents the rate of patients who were classified correctly (true positive + true negative).a Represents the comparison of the diagnostic performance of MRE and APRI in all patients for each corresponding fibrosis stage.b Represents the comparison of the diagnostic performance of MRE between patients with HBV and HCV for each corresponding fibrosis stage.ROC analysis to determine the accuracy of MRE and APRI in predicting METAVIR fibrosis stage in patients with HBV or HCV.