Fig. 6

Decision curve analysis (DCA) of the nomogram of SAE. DCA compares the net benefits of three scenarios in predicting the risk of SAE: A perfect prediction model (grey line), screen none (horizontal solid black line), and screen based on the nomogram (ride line). The DCA curves were depicted in the training cohort (A), validation cohort 1 (B), and validation cohort 2 (C)