EFS. (A) Training cohort. The 3-year EFS was 92% (95% CI, 89%-94%) for good-risk, 87% (95% CI, 82%-91%) for intermediate-risk, and 57% (95% CI, 50%-64%) for high-risk patients. (B) Validation cohort. The 3-year EFS was 95% (95% CI, 89%-98%) for good-risk, 86% (95% CI, 77%-92%) for intermediate-risk, and 63% (95% CI, 51%-72%) for high-risk patients.