Fig. 5

Decision curve analysis of the model. x-axis represents the threshold probability of in-hospital death and y-axis represents the net benefit. A DCA curves for the LR1 model predicting in-hospital all-cause mortality in the training cohort. B DCA curves of the LR1 model predicting in-hospital all-cause mortality in the test cohort. C Calibration curves for the LR2 model predicting in-hospital all-cause mortality in the training cohort. D Calibration curves for the LR2 model predicting in-hospital all-cause mortality in the test cohort