Fig. 6

The decision curve analysis for predicting the 5-year PFS (a) and OS (b). The x-axis was determined by the threshold probability. The y-axis was a net benefit, which was the relative benefit derived from the proportion of true-positive results subtracted from the proportion of false-positive results weighted by a ratio of threshold probabilities. Under the same probability, the clinical usefulness was better when the net benefit was higher. The blue line represents the clinical net benefit of TNM, and the red line represents the clinical net benefit of our nomogram. Our nomogram had more clinical net benefit than TNM stage