Fig. 3
Kaplan–Meier survival curves of patients with stage III colon cancer grouped by prognostic nutritional index (PNI) and stratified by clinical stage. a The disease-free survival (DFS) curves of all patients; b the overall survival (OS) curves of all patients; c the DFS curves of patients with stage IIIA–B colon cancer; d the OS curves of patients with stage IIIA–B colon cancer; e the DFS curves of patients with stage IIIC colon cancer; f the OS curves of patients with stage IIIC colon cancer. XELOX adjuvant chemotherapy was administrated as follow: oxaliplatin 130 mg/m2 administered intravenously on day 1 and capecitabine 1000 mg/m2 administered orally twice daily on days 1–14 for a 3-week cycle