Research Article

Preoperative Neutrophil-to-Lymphocyte Ratio, Platelet-to-Lymphocyte Ratio, and CEA as the Potential Prognostic Biomarkers for Colorectal Cancer

Table 1

Survival analysis using the Kaplan–Meier and compared by the log-rank test.

CharacteristicsNMean OS (months)X2 value

Age<65 Y8751.58.30.004
≥65 Y24341.7

SexMale198416.70.01
Female13248.6

Primary siteRectum12947.42.10.144
Colon20142.3

Tumor size<5 cm20544.10.10.829
5+ cm12545

T stageT0–T26848.72.30.138
T3–T426243.2

N stageN018548.58.90.003
N1–N314538.7

M stageM027546.917.9<0.001
M15530.7

StageI-II16349.29.10.003
III-IV16739.2

NLR<3.03 (low)17649.716.6<0.001
≥3.03 (high)15437.4

PLR<149.73 (low)14849.29.70.002
≥149.73 (high)18240.2

CEA (ng/mL)<13.4 (low)24447.917.9<0.001
≥13.4 (high)8633.3

CEA + NLRLow14152.624.4<0.001
High18937.4

CEA + PLRLow11751.613.4<0.001
High21340.4

NLR + PLRLow1165215.5<0.001
High21440

CEA + NLR + PLRLow9454.719.3<0.001
High23640.2

BMI<21.7 (low)15535.135.5<0.001
≥21.7 (high)17552.3

NLR, neutrophil-to-lymphocyte ratio; PLR, platelet-to-lymphocyte ratio; CEA, carcinoembryonic antigen; BMI, body mass index.