Missing Race, Ethnicity Information in HealthCare.gov Marketplace Enrollment Data

JAMA Network Open


Media advisory: The full study is linked to this news release.

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About The Study: In this study of HealthCare.gov Marketplace enrollment data from 2015 to 2021, race and ethnicity information were missing for 32% of enrollees. Further analysis suggested that enrollees with missing data were disproportionately Black and Hispanic and that the Marketplace may serve a more diverse population than indicated by self-reported data.

Authors: D. Keith Branham, Dr.P.H., M.P.H., of the U.S. Department of Health and Human Services in Washington, D.C., is the corresponding author.



Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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