Table 2.

Univariate logistic regression analysis of LRR-free survival and event-free survival

	LRR-free survival			Event-free survival
Variables	Hazard ratio	95% confidence interval	P	Hazard ratio	95% onfidence interval	P
Age, years(≥ 50 vs. <  50)	1.013	0.368–2.789	0.980	0.856	0.413–1.775	0.676
Tumour size, cm(>  2 vs. ≤ 2)	1.270	0.167–9.637	0.817	0.815	0.247–2.686	0.737
Lymph node(positive vs. negative)	2.682	0.609–11.811	0.192	1.972	0.757–5.135	0.164
Histological grade(3 vs. 0–2)	0.851	0.295–2.453	0.766	1.098	0.520–2.316	0.807
ER(positive vs. negative)	0.927	0.334–2.574	0.884	0.884	0.435–1.797	0.734
PR(positive vs. negative)	0.977	0.362–2.633	0.963	0.926	0.456–1.881	0.832
HER2(positive vs. negative)	1.555	0.583–4.146	0.378	1.174	0.583–2.361	0.654
Ki-67 labelling index, %(≥ 14 vs. <  14)	3.253	0.688–15.388	0.137	1.950	0.756–5.034	0.167
Surgical margin, mm(≥ 1 vs. < 1)	0.443	0.142–1.383	0.161	0.554	0.239–1.284	0.169