Development and validation of a predictive model for endoscopic improvement of Crohn's disease

Figure 5 Receiver operating characteristic curve and calibration curve for external validation, which aimed to predict endoscopic improvement during follow-up visits. A: Receiver operating characteristic curve of the external validation group for predicting endoscopic improvement during follow-up visits; B: Calibration curve of the external validation group for predicting endoscopic improvement during follow-up visits. ROC: Receiver operating characteristic; AUC: Area under the curve.