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Validation of predictive model performance. A: The receiver operating characteristic curve of the nomogram model. The area under the curve was used to evaluate the discrimination of the model; B: The decision curve analysis for nomogram to predict the risk of postoperative deep vein thrombosis in patients with craniotomy; C: The clinical impact curves for nomogram to predict the risk of postoperative deep vein thrombosis in patients with craniotomy. AUC: Area under the curve.
