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

Among 3334 patients, a thrombotic event occurred in 16.0% and was independently associated with mortality (HR 1.82; 95% CI, 1.54-2.15; P < .001). D-dimer level at presentation was independently associated with thrombotic events, consistent with an early coagulopathy.

Journal of the American Medical Association