Table II.

Association of serum microRNA-34a expression and clinicopathological data.

Variables	Groups	Number of cases	High expression	Low expression	χ2	P-value
Age (years)	≥45	42	19	23	0.83	0.36
	<45	36	20	16
BMI	>24	22	9	13	1.03	0.60
	18.5–24	35	19	16
	<18.5	21	11	10
Drinking	Yes	28	12	16	0.89	0.35
	No	50	27	23
Smoking	Yes	26	12	14	0.23	0.63
	No	52	27	25
Primary tumor diameter (cm)	>5	30	10	20	6.90	0.03
	2–5	25	13	12
	<2	23	16	7
Tumor distant metastasis	Yes	38	21	17	0.82	0.36
	No	40	18	22

BMI, body mass index.