Disentangling the Effects of Race on Breast Cancer Treatment

BACKGROUND. African Americans (AA) have higher mortality from breast cancer compared with white Americans (WA). Studies using population-based cancer registries have attributed this to disparities in treatment after normalizing the AA and WA populations for differences in disease stage. However, those studies were hampered by lack of comorbidity data and limited information about systemic treatments. The objective of the current study was to investigate racial disparities in breast cancer treatment by conducting a comprehensive medical records review of women who were diagnosed with breast cancer at the Karmanos Can-cer Institute (KCI) in Detroit, Michigan. METHODS. The study cohort consisted of 651 women who were diagnosed with primary breast cancer between 1990 and 1996 at KCI. Multivariable logistic regression analysis controlling for sociodemographic factors, tumor characteris-tics, comorbidities, and health insurance status was used to assess whether there were differences between WA and AA in the receipt of breast-conserving surgery (BCS), radiation, tamoxifen, and chemotherapy