Fig. 4

ROC curves of BN model and LR model for prediction of in patients undergoing isolated OPCABG. The AUCs of the BN model for prediction of AIS was 0.899 (95% CI, 0.876–0.921) and 0.852 (95% CI, 0.769–0.935), as well as 0.876 (95% CI, 0.846–0.907) and 0.847 (95% CI, 0.799–0.895) of the LR model in training and test sets, respectively. ROC, Receiver operating characteristic; BN, Bayesian network; LR, logistic regression; OPCABG, off-pump coronary artery bypass grafting; AUCs areas under the curve; AIS, acute ischemic stroke