Identification of miRNA-Based Signature as a Novel Potential Prognostic Biomarker in Patients with Breast Cancer

Table 2

The clinicopathological parameters of the recurrence-free survival-related training and validation sets.

Parameter	Training set (%) ()	Validation set (%) ()	Fisher’s exact test ( value)	SMD
Sex			1	0.015
Male	8 (1.3)	3 (0.1)
Female	612 (98.7)	263 (98.9)
Age (year)			0.904	0.014
≤60	354 (57.1)	150 (56.4)
>60	266 (42.9)	116 (43.6)
Stage			0.117	0.208
I	113 (18.3)	41 (15.5)
II	357 (58.0)	146 (55.3)
III	128 (20.8)	72 (27.3)
IV	7 (1.1)	4 (1.5)
X	11 (1.8)	1 (0.4)

Note: 11 patients of the breast cancer cohort (overall survival) were male.