(b) Distribution of tumor tissue staining.

Clinicopathologic features	Variables	Absent		Superficial		Deep		Complete		Total		Chi-square Test
		n	%	n	%	n	%	n	%	n	%	p
Age Groups	< 60 years	4	25	22	55	10	66.7	28	36.4	64	43.2	0.026
	> 60 years	12	75	18	45	5	33.3	49	63.6	84	56.8
Colon-Tumor Localization	Right	9	56.3	23	57.5	5	33.3	37	48.1	74	50	0.003
	Transverse	0	0	5	12.5	3	20	18	23.4	26	17.6
	Left	4	25	7	17.5	1	6.7	10	13	22	14.9
	Sigmoid	0	0	3	7.5	0	0	9	11.7	12	8.11
	Multicentric	3	18.6	2	5	6	40	3	3.9	14	9.46
TNM Stage	I	5	31.3	4	10	0	0	2	2.6	11	7.43	0.001
	II	9	56.3	25	62.5	8	53.3	22	28.6	64	43.2
	III	0	0	4	10	3	20	31	40.3	38	25.7
	IV	2	12.5	7	17.5	4	26.7	22	28.6	35	23.65
Duration of Survival	< 2 years	5	31.3	28	70	8	53.3	59	76.6	100	67.6	0.002
	2-5 years	3	18.8	2	5	4	26.7	11	14.3	20	13.5
	5-10 years	8	50	10	25	3	20	7	9.09	28	18.9