Fig. 4

Decision curve analyses (DCA) of the nomogram and 8th edition AJCC TNM staging system for 1-year (a), 3-year (b), and 5-year (c) overall survival. The x-axis represents the threshold probabilities, and the y-axis measures the net benefit. The horizontal line along the x-axis assumes that overall death occurred in no patients, whereas the solid gray line assumes that all patients will have overall death at a specific threshold probability. The grey dashed line represents the nomogram. The red dashed line represents 8th edition AJCC TNM staging system