• Mary Falcone, Lihua Liu, Albert Farias, JuanJuan Zhang, Irene Kang, Ming Li, Mariana C Stern, and Caryn Lerman.
• Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Ezralow Tower, 1441 Eastlake Ave, Suite 8302L, Los Angeles, CA, 99003, USA.
• Breast Cancer Res. Treat. 2021 Jun 1; 187 (3): 831-841.

PurposeRacial/ethnic disparities in breast cancer outcomes may be related to quality of care and reflected in emergency department (ED) visits following primary treatment. We examined racial/ethnic variation in ED visits following breast cancer surgery.MethodsUsing linked data from the California Cancer Registry and California Office of Statewide Health Planning and Development, we identified 151,229 women diagnosed with stage 0-III breast cancer between 2005 and 2013 who received surgical treatment. Differences in odds of having at least one breast cancer-related ED visit within 90 days post-surgery were estimated with logistic regression controlling for clinical and sociodemographic variables. Secondary analyses examined health care-related moderators of disparities.ResultsHispanics and non-Hispanic (NH) Blacks had an increased likelihood of having an ED visit within 90 days of surgery compared to NH Whites [OR = 1.11 (1.04-1.18), p = 0.0016; OR = 1.38 (1.27-1.50), p < 0.0001, respectively]; the likelihood was reduced in Asian/Pacific Islanders [aOR = 0.77 (0.71-0.84), p < 0.0001]. Medicaid and Medicare (vs. commercial insurance) increased the likelihood of ED visit for NH Whites, and to a lesser degree for Hispanics and NH Blacks (p < 0.0001 for interaction). Receipt of surgery at an NCI-designated Comprehensive Cancer Center or at a for-profit (vs. non-profit) hospital was associated with reduced likelihood of ED visits for all groups.ConclusionRacial/ethnic disparities in ED visits following breast cancer surgery persist after controlling for clinical and sociodemographic variables. Improving quality of care following breast cancer surgery could improve outcomes for all groups.

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