Fig. 4
From: Nomogram for prediction of fatal outcome in patients with severe COVID-19: a multicenter study
Decision curve analysis of the nomogram of patients with COVID-19. DCA compares the net benefits of three scenarios in predicting the risk of mortality: 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.