Disparities In Breast Cancer Surgery: The Lingering Effect Of Race.

6576 Background: Stage migration may be associated with delays in surgical breast cancer treatment >90 days. Although it is not recommended to have a 3-month span from diagnosis to definitive surgical management, there are no precise guidelines that establish a model time interval. This study investigates racial disparities in time to receiving first surgical treatment (i.e. surgical delay) in breast cancer patients. Methods: A cohort study of 290 insured Black (56%) and White (44%) women with primary breast cancer participated in telephone interviews that gathered data on psychosocial (e.g., self-efficacy) and healthcare factors (e.g., communication, barriers). Clinical data were abstracted from medical records. Time to surgical delay was defined as the time in days between diagnosis and definitive surgical treatment. We also considered 60-day and delay outcomes. We used unadjusted hazard ratios to examine univariate relationships between delay outcomes and covariates. Cox proportional hazard models were used for multivariate analyses. Results: Median time to surgery was 41 days and was higher in Blacks (m=47 days) compared to Whites (m=33 days) (p= .001). Considering the 90-day outcome, Black women had greater delay to surgery than White women after covariates adjustment (HR= 1.7; 95% CI: 1.2 to 2.3). Women reporting internet use (vs. not) and those with breast conserving surgery (vs. mastectomy) had greater delay to surgery (p