Excess relative risk of all-cause death in nonelderly black women diagnosed with stage I to III breast cancer was greater than in white women, with insurance accounting for one-third of the excess risk, followed by tumor characteristics. This according to a study that examined the factors contributing to black-white disparities in survival among nonelderly women with breast cancer between 2004 and 2013. Researchers found:
- 563,497 white and black women aged 18 to 64 years and diagnosed with stage I to III breast cancer from 2004 to 2013 were included.
- Among women with hormone receptor-positive disease (78% of all patients), the HR for death in black vs white women was 2.05.
- This HR decreased to 1.93, 1.54, 1.30, and 1.25 when sequentially matched for comorbidity, insurance, tumor characteristics, and treatment, respectively.
- These factors combined accounted for 76.3% of the total excess risk of death in black patients: insurance (37.0%), tumor characteristics (23.2%), comorbidities (11.3%), and treatment (4.8%).
Jemal A, Robbins AS, Lin CC, et al. Factors that contributed to black-white disparities in survival among nonelderly women with breast cancer between 2004 and 2013. [Published online ahead of print October 16, 2017]. J Clin Oncol. doi:10.1200/JCO.2017.73.7932.
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