Table 5
Expression of β₁-integrin according to the clinicopathologic findings

Variable	Expression			Density of band
	+	–	P-value	Mean±SD	P-value
Sex			0.485		0.667
Male (16)	14	2		0.25±0.12
Female (14)	14	0		0.31±0.22
Age (yr)			0.724		0.498
<60 (16)	15	1		0.27±0.20
≥60 (14)	13	1		0.29±0.15
Tumor location			0.724		0.11
Colon (16)	15	1		0.35±0.21
Rectum (14)	13	1		0.20±0.08
Stage			0.033		0.21
I (7)	5	2		0.25±0.18
II (12)	12	0		0.27±0.14
III (11)	11	0		0.31±0.22
Node metastasis			0.352		0.735
Absent (19)	17	2		0.27±0.15
Present (11)	11	0		0.31±0.21
Vascular invasion			0.69		0.627
Absent (25)	23	2		0.30±0.19
Present (5)	5	0		0.21±0.06
Lymphatic invasion			0.483		0.982
Absent (21)	19	2		0.29±0.19
Present (9)	9	0		0.27±0.14