Table 1.

Clinicopathological data of breast cancer patients

Groups	n	miR‐205‐3p expression level		χ2	df	P value	Contingency coefficient
		Low or normal expression	High expression
Age
≥50 y old	46	25	21	0.0611	1	0.8047	0.2472
<50 y old	12	7	5
Menstrual condition
Premenopause	38	20	18	0.2877	1	0.5917	0.5363
Postmenopause	20	12	8
Tumor size
≥2 cm	16	6	10	13.48	1	0.0002	3.672
<2 cm	42	36	6
TNM staging
Stages I and II	49	32	17	9.106	1	0.0025	3.108
Stages III and IV	9	1	8
Lymph node metastasis
Yes	22	7	15	5.625	1	0.0177	2.372
No	36	23	13
Recurrence
Yes	25	7	18	8.507	1	0.0035	2.917
No	33	22	11