Table 2.

Multivariate survival analysis of miR-222-3p expression and disease-free survival

Variable	HR	95% CI of HR	P
MiR-222-3p (low vs. high)	13.186	1.063–163.591	0.045
Age (≤50 vs. >50)	0.279	0.041–1.896	0.192
Histologic tumor size (≤2 cm vs. 2–5 cm vs. >5 cm)	0.228	0.050–1.030	0.055
No. of positive nodes (0 vs. 1–3 vs. ≥4)	1.402	0.399–4.931	0.598
Hormone receptor status (negative vs. positive)	0.547	0.071–4.227	0.564
HER2 status (negative vs. positive)	0.127	0.009–1.155	0.065
Grade (2 vs. 3)	5.052	0.691–36.946	0.111

HR hazard ratio, CI confidence interval, HER2 human epidermal growth factor receptor 2