EFS and OS according to patient risk groups. (A) The 5-year EFS for all patients was 85%. The 5-year EFS rates for patients with early unfavorable and standard risk (intermediate risk) versus patients with high risk were 84% and 85%, respectively. (B) The 5-year OS for all patients was 90%. The 5-year OS rates for patients with early unfavorable and standard risk (intermediate risk) versus patients with high risk were 90% and 91%, respectively.