Table 5.

COX proportional hazard regression model test (enter method) for DFS

	B	SE	Wald	p-Value	Exp(B)	95% CI for Exp(B)
						Lower	Upper
Age	0.052	0.027	3.691	0.055	1.053	0.999	1.110
Tumour size	0.042	0.025	2.863	0.091	1.042	0.993	1.094
Number of positive LNs	0.287	0.109	6.876	0.009	1.332	1.075	1.651
Histological grade	−0.736	0.711	1.069	0.301	0.479	0.119	1.932
LVI	1.198	0.724	2.738	0.098	3.313	0.802	13.693
HR	−0.590	0.508	1.344	0.246	0.555	0.205	1.502
HER2	0.702	0.389	3.265	0.071	2.018	0.942	4.323
Ki67	−0.406	2.636	0.024	0.878	0.666	0.004	116.750
Chemotherapy	−0.952	0.686	1.925	0.165	0.386	0.101	1.481

DFS, disease-free survival; HER2, human epidermal growth factor 2; HR, hormone receptor; LN, lymph node; LVI, lymphovascualar invasion.