Fig. 4

Decision curve analysis for this model in predicting MPE for patients with lung adenocarcinoma. The y-axis measures the net benefit. The grey line represents the assumption that all lesions were malignant (the treat-all scheme). The black line represents the assumption that all lesions were benign (the treat-none scheme). If the threshold probability was more than 5%, using the nomogram to predict malignancy added more benefit than either the treat-all scheme or the treat-none scheme (red line)