Table 1.

The association between serum miR-9 expression and clinicopathological characteristics of OSCC.

Parameters	Group	Total	Serum miR-9		P
			Low	High
Gender	Female	43	20	23	0.918
	Male	61	29	32
Age	≤60	36	21	15	0.095
	>60	68	28	40
Smoking status	Non-smoker	55	29	26	0.225
	Smoker	49	20	29
Tumor site	Tongue	34	14	20	0.398
	Non-tongue	70	35	35
T stage	T1–T2	66	25	41	0.013
	T3–T4	38	24	14
Lymph node metastasis	No	63	22	41	0.002
	Yes	41	27	14
TNM stage	I–II	59	21	38	0.007
	III–IV	45	28	17
Grade	Well/moderate	71	29	42	0.060
	Poor	33	20	13