Table 1.

Clinicopathological difference between different age groups of CRC (colorectal cancer) patients.

Variable	<50	%	50–60	%	60–70	%	70–80	%	>80	%	p
Case No./%	63	4.3	252	17.1	321	21.8	560	38.0	279	18.9
Gender(male)	33	52.4	138	54.8	177	55.1	411	73.4	211	75.6	<0.001
Location
Right	14	22.2	62	24.6	85	26.5	146	26.1	82	29.4	0.719
Left	23	36.5	96	38.1	107	33.3	199	35.5	105	37.6
Rectum	26	41.3	94	37.3	129	40.2	215	38.4	92	33.0
TNM stage
I	7	11.1	33	13.1	45	14.0	85	15.2	38	13.6	0.083
II	19	30.2	82	32.5	109	34.0	213	38.0	129	46.2
III	23	36.5	91	36.1	110	34.3	168	30.0	73	26.2
IV	14	22.2	46	18.3	57	17.8	94	16.8	39	14.0
LVI	13	20.6	49	19.4	71	22.1	112	20.0	42	15.1	0.281
Poor differentiation	6	9.5	15	6.0	9	2.8	35	6.3	22	7.9	0.058
Mucinous histology	7	11.1	15	6.0	30	9.3	58	10.4	20	7.2	0.223

LVI: lymphovascular invasion.