Survival curves for the subgroup analysis from the Cox-proportional regression models for patients with high-risk versus low risk for relapse
(A) Survival curve for N0-N1 subgroup for a 10-year follow-up study; X-axis- years till event; Y-axis-Survival probability; Pink: High risk; Blue: low risk. (B) Survival curve for T1-T2 subgroup for a 10-year follow-up study; X-axis- years till event; Y-axis-Survival probability; Pink: High risk; Blue: low risk.