Postoperative perforation risk after endoscopic removal of gastric gastrointestinal stromal tumors: Development and validation of a predictive nomogram

Figure 4 Development and validation of a nomogram for predicting postoperative perforation in gastric gastrointestinal stromal tumors. A: Nomogram depicting the contribution of key variables (tumor location, tumor size) to the predicted probability of perforation after endoscopic resection; B: Receiver operating characteristic curve for the training cohort. The area under the curve was 0.881; C: Receiver operating characteristic curve for the validation cohort (area under the curve = 0.878); D: Calibration curve for the training cohort; E: Calibration curve for the validation cohort. ROC: Receiver operating characteristic; AUC: Area under the curve.