Table 4.

Multivariate analysis of DFS and OS

Factors	DFS HR				OS HR
	Average	Lower	Upper	P-value	Average	Lower	Upper	P-value
Age	1.01	0.98	1.05	0.497	1.04	0.99	1.10	0.130
T stage	1.55	0.89	2.68	0.119	2.12	0.98	4.60	0.057
N stage	3.03	1.04	8.87	0.043	2.55	0.65	10.01	0.181
ER	0.70	0.19	2.65	0.603	0.61	0.13	2.85	0.532
HER2	1.12	0.39	3.25	0.836	1.92	0.51	7.20	0.333
TAM	1.53	0.49	4.77	0.464	0.64	0.13	3.08	0.575
Other endoa	2.08	0.61	7.09	0.242	1.18	0.27	5.20	0.827
Chemotherapy	0.18	0.03	1.07	0.060	N/A	N/A	N/A	N/A
GPER1	0.79	0.33	1.93	0.606	1.77	0.53	5.93	0.355

Note:

^aOther endo: other endocrine therapy except for TAM.

Abbreviations: DFS, disease-free survival; ER, estrogen receptor; GPER1, G protein-coupled estrogen receptor 1; HR, hazard ratio; N/A, not available; OS, overall survival; TAM, tamoxifen treatment.