Table 3. Comparison of patient characteristics versus post-operative RDW.

Variables	Post-operative RDW	P value
Gender		0.001
Female (n=44)	16.32 ± 1.55
Male (n=76)	14.75 ± 1.80
Age (years)		0.210
<60 (n=94)	15.23 ± 1.89
≥60 (n=26)	15.76 ± 1.78
ECOG score		0.001
0 (n=85)	14.96 ± 1.74
≥1 (n=35)	16.26 ± 1.88
ypTumor size (cm)		0.021
≤2 (n=58)	14.95 ± 2.04
>2 (n=62)	15.73 ± 1.60
Histology		0.265
Well-differentiated (n=75)	15.48 ± 2.04
Poor-differentiated (n=45)	15.11 ± 1.54
TRG score		0.285
0-1 (n=60)	15.53 ± 1.44
≥2 (n=60)	15.16 ± 2.21
Tumor location		0.011
Low (n=69)	15.71 ± 1.89
Middle-high (n=51)	14.83 ± 1.73
Depth of invasion		0.281
T3 (n=45)	15.56 ± 1.59
T4 (n=75)	15.21 ± 2.02
ypN stage		0.001
N0 (n=62)	14.68 ± 1.58
N≥1 (n=58)	16.27 ± 1.87
Stage of disease		0.001
II (n=61)	14.49 ± 1.59
III-IV (n=59)	16.35 ± 1.68
Surgical operation		0.012
Mile's (n=46)	15.89 ± 1.81
Dixon (n=74)	15.01 ± 1.84
Neurological invasion		0.034
Absent (n=90)	15.13 ± 1.70
Present (n=30)	15.97 ± 2.22
Vascular invasion		0.002
Absent (n=78)	14.95 ± 1.71
Present (n=42)	16.13 ± 1.96

TRG score, tumor regression grading score.