Table 1.

The relationship between the expression of miR-640 and various clinicopathological variables.

Patients Characteristics	Total	miR-640 expression		P value*
		High (N=15)	Low (N=35)
Age				0.2077
<60	20	8	12
≥60	30	7	23
TNM stage				0.0434*
I/II	33	13	20
III/IV	17	2	15
Tumor size(cm)				0.0009***
≤2	29	14	15
>2	21	1	20
Lymph node metastasis				0.0588
negative	30	12	18
positive	20	3	17
Distant metastasis				0.0434*
No	42	15	27
Yes	8	0	8

P value from Chi-square test (*P < 0.05，*** P < 0.001.)