Table 3.

Cox-regression multivariate analysis for overall survival

Variable	Significance (p-value)	Hazard ratio	95% CI for Exp(B)
			Lower	Upper
Routine follow-up for 5 yr	< 0.001	0.29	0.23	0.37
Age > 40 yr	0.001	0.67	0.52	0.85
Histologic grade I (vs. II/III)	< 0.001	0.23	0.13	0.42
Staging I (vs. II/III)	< 0.001	0.44	0.33	0.58
HR+ and HER2- (vs. the others)	0.105	0.83	0.66	1.04

CI, confidence interval; HR, hormone receptor; HER2, human epidermal growth factor receptor 2.