Receiver operating characteristic curve of different non-invasive tests for predicting advanced liver fibrosis in AIH patients. Receiver operating characteristic (ROC) curves of red blood cell distribution width (RDW), RDW-to-platelet (PLT) ratio (RPR), RDW-to-lymphocyte ratio (RLR), aspartate aminotransferase (AST)-to-alanine aminotransferase ratio, AST-to-PLT ratio index (APRI), 4 readily available blood indices fibrosis index based on the Fibrosis-4 Index (FIB-4), and gamma-glutamyl transpeptidase-to-PLT ratio (GPR), neutrophil-to-lymphocyte ratio (NLR) for diagnosis of advanced AIH-related fibrosis.