Establishment and application of three predictive models of anastomotic leakage after rectal cancer sphincter-preserving surgery

Figure 1 Nomogram for predicting anastomotic leakage following rectal cancer surgery.

Figure 2 Decision tree for predicting anastomotic leakage following rectal cancer surgery. AL: Anastomotic leakage.

Figure 3 Importance of variables in the random forest model.

Figure 4 Receiver operating characteristic curves of the three models in the training set. A: Nomogram; B: Decision tree; C: Random forest. AUC: Area under the receiver operating characteristic curve; CI: Confidence interval.

Figure 5 Receiver operating characteristic curves of the three models in the validation set. A: Nomogram; B: Decision tree; C: Random forest. AUC: Area under the receiver operating characteristic curve; CI: Confidence interval.