Table I.

Association between miR-518b expression and clinicopathological characteristics of patients with non-small cell lung cancer (n=118).

		Serum miR-518b expression			Tissue miR-518b expression
Characteristic	Patients, n	Low (n=58)	High (n=60)	P-value	Low (n=54)	High (n=64)	P-value
Age, years				0.969			0.569
≤60	47	23	24		20	27
>60	71	35	36		34	37
Sex				0.879			0.265
Female	48	24	24		19	29
Male	70	34	36		35	35
Smoking status				0.732			0.554
Never	49	25	24		24	25
Previous/Current	69	33	36		30	39
Histological type				0.791			0.946
Adenocarcinoma	70	34	36		32	38
Squamous cell carcinoma	36	19	17		16	20
Othersa	12	5	7		6	6
Tumor size, cm				0.042			0.014
≤3	62	36	26		35	27
>3	56	22	34		19	37
Differentiation				0.127			0.097
Well/Moderate	69	38	31		36	33
Poor	49	20	29		18	31
TNM stage				0.006			0.006
I–II	58	36	22		34	24
III–IV	60	22	38		20	40
Lymph node metastasis				0.039			0.031
Negative	66	38	28		36	30
Positive	52	20	32		18	34

^alarge cell carcinoma and adenosquamous carcinoma. miR, microRNA; TNM, tumor-node-metastasis.