Table 2.

Cox regression analysis of multivariate for RFS and OS of breast cancer patients.

Variables	RFS		OS
validation cohort	95%CI	p	95%CI	p
RIS (high vs. low)	0.079-0.870	0.029	0.083-0.920	0.036
Estrogen receptor status(positive vs. negative)	0.564-1.088	0.145	0.542-1.046	0.009
Progesterone receptor status(positive vs. negative)	0.607-1.162	0.293	0.610-1.168	0.306
Human epidermal growth factor receptor2 status(positive vs. negative)	0.572-3.835	0.419	0.547-3.655	0.474
Laterality(left vs. right)	0.379-2.407	0.922	0.389- 2.470	0.967
Age(≥60 vs. <60)	0.429-5.126	0.533	0.446-5.322	0.495