Fig. 3

Receiver operating characteristic curve for MAC score and Kaplan–Meier analysis in the derivation group. (a) ROC curve of MAC score in the derivation group (n = 795). Cases with missing data were excluded from the analysis. The AUC was 0.86. The sensitivity and specificity were 81.8 and 74.7%, respectively, at a cutoff value of 3. (b) Kaplan–Meier analysis stratified by MAC score in the derivation group. MAC scores exceeding 3 points showed poor survival outcomes. AUC, area under the curve; ROC, receiver operating characteristic.