Table 1.

Relationship between miR-9 expression and clinicopathologic features of malignant melanoma patients

Feature	Cases (n)	miR-9 expression		χ2	P-value
		Low (n=45)	High (n=28)
Sex				0.252	0.615
Male	39	23	16
Female	34	22	12
Age (years)				0.027	0.868
≤56	33	20	13
>56	40	25	15
Tumor thickness				0.847	0.357
≤1 mm	31	21	10
>1 mm	42	24	18
TNM stag e				4.447	0.035
I/II	28	13	15
III	45	32	13
Lymph node metastasis				5.726	0.017
No	34	16	18
Yes	39	29	10

Abbreviations: miR-9, microRNA-9; TNM, tumor node metastasis.