Figure 1 Receiver operating characteristic curves associated with the individual markers and the composite screener in the training and validation samples. (A) For the training dataset, the areas under the ROC curve (AUC) for ALT, AST, CDT, MCV, and the composite screener were 0.71, 0.63, 0.77, 0.66, and 0.87, respectively. (B) For the validation data, the AUC values for ALT, AST, CDT, MCV, and the composite screener were 0.79, 0.55, 0.53, 0.69 and 0.83, respectively. ALT, alanine aminotransferase; AST, aspartate aminotransferase; AUC, areas under the receiver operating characteristic curve; CDT, Carbohydrate-deficient transferrin; MCV, mean corpuscular volume; ROC, receiver operating characteristic curve.