Table 1. Correlation between integrin β1 expression and clinicopathological parameters.

Clinicopathological parameters	N (90)	Integrin β1		X 2	p
		Low expression (n)	High expression (n)
Sex
Male	58	32	26	0.569	0.451
Female	32	15	17
Age
≥60	54	25	29	1.900	0.168
<60	36	22	14
Tumor diameter (cm)
≥7	18	13	5	3.607	0.058
<7	72	34	38
T stage
T3 + T4	77	41	36	0.224	0.636
T1 + T2	13	6	7
N stage
N1-2	43	17	26	5.312	0.021
N0	47	30	17
M stage
M1	4	1	3		0.345*
M0	86	46	40
AJCC stage
III + IV	44	18	26	4.416	0.036
I + II	46	29	17
Vascular invasion
Yes	5	1	4		0.189*
No	85	46	39

Note: *Fisher’s exact test; AJCC, American Joint Committee on Cancer.