Fig. 4

Apparent performance of the prediction model in the derivation set and validation set. A1 Calibration curve of the multivariate prediction model in the derivation set. B1 ROC curve of the multivariate prediction model in the derivation set. C1 DCA of the model in the derivation set: Y-axis represents the net benefit. The red solid line represents the CHD prediction model, the thin solid line is the hypothesis that all patients get achievement of CHD and receive treatment, and the thick one is the assumption that no patients have CHD and none receive treatment. D1 CIC of the model in the derivation set. The yellow solid line represents the number of high-risk patients and the blue dotted line is the number of high-risk patients with events in the 1000 patients.A1Calibration curve of the multivariate prediction model in the validation set. (B2) ROC curve of the multivariate prediction model in the validation set. C1 DCA of the multivariate prediction model in the validation set. C1 CIC of the multivariate prediction model in the validation set