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Comparison of time-dependent ROC (2 years) between the RSF model and 5 other models. (A) Training cohort, (B) internal validation cohort, (C) external validation cohort. ROC, receiver operating characteristic curve; RSF, random survival forests; ERASL, early recurrence after surgery for liver tumor; AJCC TNM, American Joint Committee on Cancer tumor-node-metastasis; BCLC, Barcelona Clinic Liver Cancer.
