Construction of a clinical survival prognostic model for middle-aged and elderly patients with stage III rectal adenocarcinoma

Figure 4 Kaplan-Meier survival curves for low-, medium-, and high-risk groups based on risk scores. The optimal overall survival (OS) risk score cutoffs were 1 and 2.7. Cancer-specific survival (CSS) risk score cutoffs were 1 and 2.8. Significant differences in OS and CSS were observed between low-risk, intermediate-risk, and high-risk patients in the training and validation cohorts. A: OS risk score cutoff value; B: CSS risk score cutoff value; C: Risk-stratified survival curve for OS in the training cohort; D: Risk-stratified survival curve for OS in the validation cohort; E: Risk-stratified survival curve for CSS in the training cohort; F: Risk-stratified survival curve for CSS in the validation cohort.