Fig. 6

Decision curve analysis of 1-, 3- and 5-year CSS predicting the nomogram and TNM stage system in the internal validation (A, B and C) and external validation sets (D, E and F). The x-axis shows the threshold probabilities. The y-axis represents net benefit. The grey line indicates the assumption that all patients died from ascending colon adenocarcinoma. The black line indicates the assumption that all patients survived