Table 1.

Hazard Ratios for Breast Cancer Specific Mortality, Stratified by Race

	White (n=631)		African American (n=518)
	HR adjusted for age at diagnosis and date of diagnosis (95% CI)	HR adjusted for age at diagnosis, date of diagnosis, and stage at diagnosis (95% CI)	HR adjusted for age at diagnosis and date of diagnosis (95% CI)	HR adjusted for age at diagnosis, date of diagnosis, and stage at diagnosis (95% CI)
Menopausal Status
Pre-menopausal	1.00	1.00	1.00	1.00
Post-menopausal	0.6 (0.3, 1.0)	0.6 (0.3, 1.0)	0.8 (0.5, 1.3)	0.8 (0.5, 1.3)
Subtype
Luminal A	1.00	1.00	1.00	1.00
Luminal B	1.6 (0.9, 2.9)	1.5 (0.8, 2.7)	1.3 (0.6, 2.4)	1.2 (0.6, 2.2)
Basal-like	2.0 (1.2, 3.4)	1.7 (1.0, 2.9)	1.5 (1.0, 2.4)	1.4 (0.9, 2.1)
HER2+/ER−	2.4 (1.2, 4.7)	1.4 (0.7, 2.9)	2.3 (1.3, 4.0)	1.8 (1.0, 3.1)
Unclassified	1.6 (0.9, 3.1)	1.6 (0.9, 3.1)	1.3 (0.8, 2.3)	1.2 (0.7, 2.0)
Subtype combined
Luminal A or B	1.00	1.00	1.00	1.00
Basal-like	1.8 (1.1, 3.0)	1.6 (0.9, 2.6)	1.5 (1.0, 2.2)	1.3 (0.9, 2.0)
HER2+/ER−	2.1 (1.1, 4.2)	1.3 (0.6, 2.6)	2.2 (1.3, 3.7)	1.7 (1.0, 2.9)
ER status
ER+	1.00	1.00	1.00	1.00
ER−	1.5 (1.0, 2.2)	1.3 (0.9, 1.9)	1.7 (1.2, 2.5)	1.5 (1.0, 2.2)
PR status
PR+	1.00	1.00	1.00	1.00
PR−	1.8 (1.2, 2.7)	1.6 (1.1, 2.4)	1.6 (1.1, 2.3)	1.4 (0.9, 2.0)
HER2 status
HER2−	1.00	1.00	1.00	1.00
HER2+	1.5 (0.9, 2.3)	1.2 (0.7, 1.9)	1.4 (0.9, 2.2)	1.3 (0.8, 1.9)