Fig. 2

ROC curves, calibration curves and DCA of the diagnostic nomogram for estimating the risk of BM in patients with IDC. a The area under the ROC curve was used to show the discrimination of the diagnostic nomogram. b The X-axis represents the nomogram-predicted probability of BM; the Y-axis represents the actual probability of BM. Plots along the 45-degree line indicate a perfect calibration model in which the predicted probabilities are identical to the actual outcomes. c This diagnostic nomogram shows a notable positive net benefit, indicating that it has a good clinical utility in predicting estimating the risk of BM in patients with IDC