Table 4.

Association between adjuvant chemotherapy status and other clinicopathological characteristics

	Chemotherapy group	Surgery-alone group	P value
	(n = 72)	(n = 59)
Age
<65	39	12	<0.001
≥65	33	47
Sex
Male	39	39	0.211
Female	33	20
ASA-PS
1, 2	67	47	0.035
3, 4	5	12
Tumor location
Colon	29	20	0.474
Rectum	43	39
Tumor size (mm)
<50	36	26	0.598
≥50	36	33
Tumor stage
T1–T3	59	50	0.815
T4	13	9
Histopathological grading
G1, G2	62	51	1.000
G3	10	8
Lymphatic invasion
Absence	30	28	0.596
Presence	42	31
Venous invasion
Absence	32	34	0.161
Presence	40	25
Nodal involvement
N1	48	44	0.344
N2	24	15
PDC
G1, G2	41	38	0.473
G3	31	21

PDC, poorly differentiated cluster; ASA-PS, American Society of Anesthesiologists physical status.