Table 3
Expression of CEA according to the clinicopathologic findings

Variable	Expression			Density of band
	+	–	P-value	Mean±SD	P-value
Sex			0.567		0.034
Male (16)	13	3		0.08±0.05
Female (14)	12	2		0.12±0.05
Age (yr)			0.567		0.22
<60 (16)	13	3		0.09±0.05
≥60 (14)	12	2		0.12±0.06
Tumor location			0.567		0.95
Colon (16)	13	3		0.10±0.07
Rectum (14)	12	2		0.10±0.04
Stage			0.293		0.48
I (7)	5	2		0.10±0.05
II (12)	10	2		0.09±0.06
III (11)	10	1		0.12±0.05
Node metastasis			0.381		0.866
Absent (19)	15	4		0.10±0.06
Present (11)	10	1		0.11±0.04
Vascular invasion			0.373		0.559
Absent (25)	20	5		0.10±0.06
Present (5)	5	0		0.11±0.03
Lymphatic invasion			0.479		0.803
Absent (21)	18	3		0.10±0.06
Present (9)	7	2		0.10±0.04