Table 1. Association between miR-346 and baseline characteristics.

Parameter	n	miR-346 expression
		Low(n=38)	High(n=76)	P-value[a]
Age(years)				<0.0001[*]
≤ 60	45	26	19
> 60	69	12	57
Sex				0.8938
Male	50	17	33
Female	64	21	43
Differentiation				0.0873
Well, moderate	36	8	28
Poor	78	30	48
Tumor size (maximum diametercm)				0.0061[*]
≤ 3cm	32	18	18
> 3cm	82	20	62
Smoking				<0.0001[*]
Yes	83	15	68
No	31	23	8
Lymph node metastasis				0.0119[*]
Positive	76	17	59
Negative	48	21	27
TMN stage				0.0140[*]
I	21	12	9
II/III/IV	93	26	67
Histological tumor type				0.5658
Squamous cell carcinoma	79	25	54
Adenocarcinoma	35	13	22

^aChi-square test

^*P< 0.05