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Table 7 Overall survival of the patients grouped by the combination of LDH and CEA levels

From: Palliative primary tumor resection provides survival benefits for the patients with metastatic colorectal cancer and low circulating levels of dehydrogenase and carcinoembryonic antigen

Group PPTR group Non-PPTR group P
Group 1 22.23 (4.07–86.73) 16.23 (2.80–64.50) <0.001
Group 2 20.13 (2.77–73.33) 13.17 (2.33–41.33) 0.188
Group 3 18.50 (4.70–25.50) 13.55 (3.47–44.43) 0.918
  1. Each value is presented as median followed by range in parentheses
  2. Group 1 consisted of patients who had normal LDH levels and CEA levels ≤70 ng/mL, group 2 consisted of patients with increased LDH levels and CEA levels ≤ 70 ng/mL, or patients with normal LDH levels and CEA levels >70 ng/mL, group 3 consisted of patients who had increased LDH levels and CEA levels >70 ng/mL. The overall survival was compared between PPTR and non-PPTR group, and the differences were analyzed using the log-rank test
  3. PPTR palliative primary tumor resection, CEA carcinoembryonic antigen, LDH lactate dehydrogenase