Table 3.

Multivariate survival analysis of numbers of highly expressed miRNAs and disease-free survival

Variable	HR	95% CI of HR	P
No. of highly expressed miRNAs (<3 vs. ≥3)	2.293	1.128–4.662	0.022
Age (≤50 vs. >50)	0.397	0.069–2.301	0.303
Histologic tumor size (≤2 cm vs. 2–5 cm vs. >5 cm)	0.224	0.043–1.160	0.074
No. of positive nodes (0 vs. 1–3 vs. ≥4)	1.905	0.444–8.169	0.386
Hormone receptor status (negative vs. positive)	0.476	0.043–5.261	0.545
HER2 status (negative vs. positive)	0.353	0.025–5.011	0.442
Grade (2 vs. 3)	3.060	0.338–27.685	0.320

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