Risk-stratified assessment of 180-day mortality in severe alcoholic hepatitis

Figure 2 Machine learning model performance and comparison. A: Receiver operating characteristic (ROC) curves of nine machine learning models in the training set (internal validation); B: ROC curves of the nine models in the independent test set; C: ROC curve comparison between the best-performing model (XGBoost) and traditional scores (model for end-stage liver disease and Maddrey discriminant function) in the training set; D: ROC curve comparison between the XGBoost model and traditional scores in the independent test set. AUC: Area under the curve; ML: Machine learning; MELD: Model for end-stage liver disease; MDF: Maddrey discriminant function.