Table I.

Association of miR-18b expression level with clinicopathological features in patients with ovarian cancer.

		miR-18b expression level
Group	n	Low	High	Pearson's χ2	P-value
Age, years				0.031	0.861
<50	25	12	13
≥50	35	16	19
Tumor grade				7.890	0.005
G1-G2	27	18	9
G3	33	10	23
Lymph node metastasis				15.654	<0.001
Negative	14	13	1
Positive	46	15	31