Table 2.

Correlation is of miR-631 with clinicopathological features

Features	Groups	Cases	MiR-631		P
			The elevated (n = 24)	The declined (n = 24)
Age	<60	15	7	8	0.7555
	≥60	33	17	16
Gender	Male	29	17	12	0.1400
	Female	19	7	12
Tumor size (cm)	≥5 cm	38	15	23	0.0045
	<5 cm	10	9	1
Histological grade	Moderate	30	13	17	0.2330
	Low	18	11	7
TNM staging	I + II	22	14	8	0.0822
	III + IV	26	10	16
Smoking history	Smoking	35	17	18	0.7453
	No smoking	13	7	6