Fig. 4

Decision curve analysis for the DGF prediction nomogram. The y-axis measures the net benefit. The red line represents the DGF prediction nomogram. The gray line represents the assumption that all recipients have DGF. The black line represents the assumption that no recipients have DGF. The net benefit was calculated by subtracting the proportion of all patients who are false positive from the proportion of those who are true positive, weighting by the relative harm of forgoing treatment when compared with negative consequences of an unnecessary treatment. The decision curve showed that if the threshold probability of a patient or doctor is > 5% and < 70%, the use of the nomogram in the current study to predict DGF adds more benefit than that achieved with the treat-all-patients scheme or the treat-none scheme