Prediction of overall survival following colorectal cancer surgery in elderly patients

Figure 1 Observed survival probabilities of patients in the three risk score categories compared against model-based predicted probabilities for each group. P value < 0.001 for separation of Kaplan-Meier survival curves (solid lines).

Figure 2 Kaplan-Meier overall survival curves of the 2 cohorts. SGH: Singapore General Hospital; KNUCH: Kyungpook National University Chilgok Hospital.

Figure 3 Observed survival probabilities of patients in the three risk score categories of the validation cohort compared against model-based predicted probabilities for each risk categories. P value < 0.001 for separation of Kaplan-Meier survival curves (solid lines).

Figure 4 Recalibrated model applied to the Korean cohort. P value < 0.001 for separation of Kaplan-Meier survival curves (solid lines).