Fig. 1From: Benefit of chemotherapy based on platinum with definitive radiotherapy in older patients with locally advanced esophageal squamous cell carcinomaKaplan–Meier curves of chemotherapy, tumor thickness, and N stage for the whole study population showing (A–C) overall survival (p < 0.001, p < 0.001, p < 0.001, respectively); (D–F) progression-free survival (p = 0.001, p < 0.001, p < 0.001, respectively). HR, hazard ratio; N, nodeBack to article page