Research Article

Combined Detection of Preoperative Neutrophil-to-Lymphocyte Ratio and CEA as an Independent Prognostic Factor in Nonmetastatic Patients Undergoing Colorectal Cancer Resection Is Superior to NLR or CEA Alone

Figure 2

Kaplan–Meier survival curves for overall survival (OS) and disease-free survival (DFS) in 125 patients undergoing primary colorectal cancer resection according to their NLR and CEA levels. (a) OS according to NLR. (b) DFS according to NLR. (c) OS according to CEA levels. (d) DFS according to CEA levels. (e) OS according to COCN. (f) DFS according to COCN. Patients with neither NLR ≥ 2.43 nor CEA ≥ 5 were assigned as COCN = 0, with NLR ≥ 2.43 or CEA ≥ 5 as COCN = 1 and with NLR ≥ 2.43 and CEA ≥ 5 as COCN = 2.
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