Table 2. Univariate and multivariate survival analyses for BCSS and RFS.

Variables		BCSS				RFS
		Univariate	Multivariate			Univariate	Multivariate
		P	HR	95% CI	P	P	HR	95% CI	P
Age, year	≤50 vs.>50	0.356	1.911	0.768–4.755	0.164	0.582	1.047	0.554–1.982	0.887
TNM stage	Stage I & II vs. Stage III	0.002	4.217	1.141–15.579	0.031	<0.001	3.554	1.467–8.609	0.005
Lymphovascular invasion	Negative vs. Positive	0.060	1.920	0.397–9.277	0.417	0.039	1.151	0.398–3.331	0.795
ER status	Negative vs. Positive	0.001	0.493	0.126–1.920	0.308	0.009	0.748	0.269–2.082	0.578
PR status	Negative vs. Positive	0.001	0.560	0.195–1.610	0.282	0.004	0.644	0.283–1.465	0.294
HER-2 status	Negative vs. Positive	0.045	1.121	0.350–3.595	0.847	0.061	1.158	0.513–2.613	0.724

Abbreviations: BCSS, breast cancer-specific survival; RFS, recurrence/metastasis-free survival; HR, hazard ratio; CI, confidence interval; TNM, tumor, node, metastasis; ER, estrogen receptor; PR, progesterone receptor; HER-2, human epidermal growth factor receptor 2

Bold values denote P<0.05.