Fig. 2From: The prognostic accuracy evaluation of SAPS 3, SOFA and APACHE II scores for mortality prediction in the surgical ICU: an external validation study and decision-making analysisPairwise comparison of the prediction model’s receiver operating characteristic (ROC) curves. ROC curves of different severity scores with intra-ICU (a) and in-hospital (b) mortality as the outcome. Green line—APACHE II; blue line—SAPS 3; orange line—SOFABack to article page