Development and validation of a nomogram predicting rebleeding in cirrhotic patients with patent transjugular intrahepatic portosystemic shunt

Figure 4 Calibration plot of the nomogram model. This figure illustrates the agreement between the nomogram-predicted probability of rebleeding and the actual observed rebleeding rate. The dotted line (apparent) represents the model’s performance on the original dataset, while the solid line (bias-corrected) shows the boot-strap-corrected calibration curve based on 1000 resamples, indicating the model’s internal stability. The diagonal line denotes perfect calibration. The mean absolute error was 0.046 (n = 180), demonstrating good concordance between predicted and observed outcomes.