Fig. 6

Receiver operating characteristic curve (ROC) on CECT-based RM according to improved risk grouping [LRT* (Types A and AB), HRT* (Types B1, B2 and B3), TC]. a The 13-feature RM was trained in the training set with the LR classifier. The areas under the ROC curve (AUCs) of LRT, HRT, and TC were 0.855, 0.862, and 0.869, respectively. b The 13-feature RM was tested in the training set with the LR classifier. The AUCs of LRT, HRT, and TC were 0.778, 0.716, and 0.879, respectively