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

Published in final edited form as: Breast Cancer Res Treat. 2015 May 29;152(2):407–416. doi: 10.1007/s10549-015-3436-x

Table 4.

Multicovariate Cox regression model for overall survival, stratified by performance status, hormone receptor status, number of sites of metastasis, locoregional surgery, and hormonal therapy

Parameter	Hazard ratio	95 % CI	P value
IBC versus non-IBC	1.431	1.155–1.774	0.0011
Ethnicity
Black versus White	1.423	1.182–1.713	0.0002
Other versus White	1.209	0.973–1.501	0.0861
Age at diagnosis	1.008	1.001–1.014	0.0207
HER2 positive versus negative	0.659	0.553–0.786	<0.0001
Visceral versus nonvisceral metastasis	1.206	1.007–1.443	0.0413