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Postoperative overall survival in patients with gastric cancer based on the three groups according to the value of combined index: low (score 0), medium (score 1–3), and high (score 4–6). The Kaplan–Meier method was performed separately by surgical procedure. (a) Patients who underwent distal gastrectomy or proximal gastrectomy, and (b) patients who underwent total gastrectomy. DG, distal gastrectomy; PG, proximal gastrectomy; TG, total gastrectomy.
