Table III.

Univariate and multivariate Cox regression analysis of disease-free survival.

	Univariate			Multivariate
Variable	HR	95% CI	P-value	HR	95% CI	P-value
Age	0.54	0.28–1.04	0.06
Menopausal status	0.54	0.28–1.03	0.06
Tumor size	1.13	0.81–1.58	0.46
Pathological N stage	4.04	2.23–7.31	0.01	2.45	1.23–4.92	0.01
NAC	3.46	1.87–6.40	0.01	2.45	1.19–5.02	0.02
EDNRB	0.36	0.14–0.91	0.03	0.38	0.15–0.98	0.04

HR, hazard ratio; CI, confidence interval; NAC, neoadjuvant chemotherapy; EDNRB Endothelin receptor B.