Table 3. Univariate analysis of DFS and OS with breast cancer.

Risk factor	SLN metastasis		DFS		OS
	RR (95% CI)	P	RR (95% CI)	P	RR (95% CI)	P
Age	1.005 (0.990–1.020)	0.525	1.009 (0.994–1.024)	0.266	1.003 (0.985–1.021)	0.765
Menstrual condition	0.923 (0.571–1.492)	0.743	1.110 (0.691–1.783)	0.665	1.018 (0.569–1.820)	0.953
Tumor size	2.579 (1.362–4.883)	0.004	1.827 (1.069–3.112)	0.028	1.399 (0.685–2.856)	0.357
Pathological type	2.003 (0.979–4.098)	0.057	0.667 (0.360–1.235)	0.198	0.930 (0.425–2.037)	0.857
TNM staging	1.947 (1.178–3.219)	0.009	1.980 (1.208–3.246)	0.007	4.322 (2.392–7.809)	<0.001
Histological grade	3.050 (1.786–5.211)	<0.001	2.448 (1.522–3.937)	<0.001	3.182 (1.582–6.399)	0.001
Blood vessel invasion	1.350 (0.677–2.695)	0.394	2.473 (1.304-4.668)	0.006	2.771 (1.391–5.520)	0.004
HER-2 expression	5.121 (3.105–8.444)	<0.001	2.052 (1.265–3.330)	0.004	3.915 (1.949–7.865)	<0.001
SLN metastasis	–	–	9.171 (4.645–18.106)	<0.001	3.728 (1.759–7.899)	0.001
ER	0.265 (0.154–0.456)	<0.001	0.571 (0.358–0.912)	0.019	0.399 (0.209–0.761)	0.005
PR	0.289 (0.171–0.488)	<0.001	0.160 (0.097–0.265)	<0.001	0.534 (0.292–0.977)	0.042

Abbreviations: CI, confidence interval; RR, risk ratio; –, no value.