Table III.

microRNA-34a expression in serum and patients' clinicopathological data.

Variables	Groups	Number of cases	High expression	Low expression2	χ2	P-value
Age (years)	≥45	42	19	23	0.83	0.36
	<45	36	20	16
BMI	>24	22	8	14	2.40	0.30
	18.5–24	35	20	15
	<18.5	21	11	10
Drinking	Yes	28	13	15	0.22	0.64
	No	50	26	24
Smoking	Yes	26	11	15	0.92	0.34
	No	52	28	24
Primary tumor diameter (cm)	>5	30	9	21	8.68	0.01
	2–5	25	14	11
	<2	23	16	7
Tumor distant metastasis	Yes	38	21	17	0.82	0.36
	No	40	18	22

BMI, body mass index.