Table 1. Associations of miR-191 Expression in ESCC Tissues with Demographic and Clinicopathologic Characteristics.

Category	n=93	miR-191 expression		p value*
		Low (n=41)	High (n=52)
Gender				0.976
Male	77	34	43
Female	16	7	9
Age				0.144
≤65	51	19	32
>65	42	22	20
Tumor size, cm				0.697
<5	52	22	30
≥5	41	19	22
Differentiation				0.037
Well and moderate	57	30	27
Poorly and not	36	11	25
Depth of invasion				0.010
T1–T2	24	16	8
T3–T4	69	25	44
Stages				<0.001
I–II	50	32	18
III–IV	43	9	34
Lymph node metastases				<0.001
0	45	28	17
≥1	48	13	35
Metastases to other organs				0.025
Present	6	0	6
Absent	87	41	46

miR-191, microRNA-191; ESCC, esophageal squamous cell carcinoma.

^*p values were calculated through the χ² test to analyze the relationship between miR-191 expression and clinicopathologic characteristics.