Long-term efficacy of perioperative chemoradiotherapy on esophageal squamous cell carcinoma

Figure 1 Kaplan-Meier curves. A: Postoperative progression-free survival. Logrank test: χ² = 8.39, P = 0.0151; “+”: Loss to follow-up. Preoperative vs surgery: χ² = 6.81, P = 0.0091; Postoperative vs surgery: χ² = 5.38, P = 0.0203; Preoperative vs postoperative: χ² = 0.14, P = 0.7060; B: Postoperative overall survival. Logrank: χ² = 8.07, P = 0.0176; “+”: Loss to follow-up. Preoperative vs surgery: χ² = 7.85, P = 0.0051; Postoperative vs surgery: χ² = 5.33, P = 0.0209; Preoperative vs postoperative: χ² = 0.46, P = 0.4978; C: Postoperative progression-free survival of radical resection. Logrank: χ² = 6.82, P = 0.0331; “+”: Loss to follow-up. Preoperative vs surgery: χ² = 6.16, P = 0.0130; Postoperative vs surgery: χ² = 4.02, P = 0.0449; Preoperative vs postoperative: χ² = 0.22, P = 0.6416; D: Postoperative overall survival of radical resection. Logrank: χ² = 8.36, P = 0.0153; “+”: Loss to follow-up. Preoperative vs surgery: χ² = 7.65, P = 0.0057; Postoperative vs surgery: χ² = 4.78, P = 0.0288; Preoperative vs postoperative: χ² = 0.16, P = 0.6873.