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Stratified analysis for patients with LUAD in the training set. Patients were assigned to different subgroups according to clinicopathological risk factors. A‐B, EGFR mutation status. C‐D, KRAS mutation status. E‐F, AJCC stage I and stage II‐IV. G‐H, Lymph node metastatic (LNM)‐positive and ‐negative. I‐J, Distant metastatic (DM)‐positive and ‐negative. K‐L, Age ≤ 65 and > 65 y
