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    Research Letter
    July 20, 2020

    Thrombosis in Hospitalized Patients With COVID-19 in a New York City Health System

    Author Affiliations
    • 1Department of Population Health, New York University Langone Health, New York, New York
    • 2Department of Medicine, New York University Langone Health, New York, New York
    JAMA. Published online July 20, 2020. doi:10.1001/jama.2020.13372

    Patients with coronavirus disease 2019 (COVID-19) are at increased risk of thrombosis.1 However, studies have been limited in size, did not report all thrombotic events, and focused on patients with severe disease hospitalized in intensive care units (ICUs). We assessed the incidence of, and risk factors for, venous and arterial thrombotic events in all hospitalized patients with COVID-19 at a large health system consisting of 4 hospitals in New York City.

    This study included consecutive patients aged at least 18 years, admitted to a hospital affiliated with NYU Langone Health between March 1 and April 17, 2020, who tested positive for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) using reverse transcriptase–polymerase chain reaction of patient sputum or nasopharyngeal or oropharyngeal swabs. This study was approved by the NYU Grossman School of Medicine Institutional Review Board, which waived the need for informed consent.