Table 1.

Prognostic scores of NLR, CEA, and COCN.

Scoring system	Score
NLR
≥2.43	1
<2.43	0
CEA
≥5 ng/mL	1
<5 ng/mL	0
Combination of CEA and NLR (COCN)
NLR ≥ 2.43 and CEA ≥ 5 ng/mL	2
NLR ≥ 2.43 or CEA ≥ 5 ng/mL	1
Neither NLR ≥ 2.43 nor CEA ≥ 5 ng/mL	0

NLR = neutrophil-to-lymphocyte ratio; CEA = carcinoembryonic antigen.