Improved Survival Outcome and Access to Cancer Screening from Hemorrhoid in Patients with Rectal Cancer

Figure 5

A nomogram and calibration curve for prediction of disease-free survival in rectal cancer. (a) A nomogram to predict individual patient-level 3-year and 5-year DFS based on hemorrhoid history and other clinicopathological risk factors. (b) Calibration plots for the internal validation of the nomogram. The observed DFS estimated by Kaplan-Meier was plotted against nomogram-predicted probability of DFS. 95% confidence intervals of the Kaplan-Meier estimates were indicated with vertical lines. Grayline indicated the reference line, showing where an ideal nomogram would lie. DFS: disease-free survival.

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