. Author manuscript; available in PMC: 2016 Dec 1.

Published in final edited form as: Clin Breast Cancer. 2015 Jun 18;15(6):458–466. doi: 10.1016/j.clbc.2015.06.006

Table 2.

Multivariate Cox regression analysis of predictors of distant disease-free survival.^a

Covariate	Subgroup	Hazard Ratio (95% CI)	P Value
Histologic grade	1 vs 3	0.115 (0.033–0.403)	.0007
	2 vs 3	0.509 (0.271–0.955)	.035
	1 vs 2	0.226 (0.068–0.751)	.015
Recurrence Score	High vs low	2.197 (0.901–5.356)	.083
	Intermediate vs low	1.880 (0.960–3.683)	.066
	High vs intermediate	1.169 (0.543–2.514)	.690

Only significant results are presented (except for RS).