How age and underlying conditions affect incidence of hospitalization and death after documented COVID-19 diagnosis among individuals aged >=20 years, a retrospective cohort study using PCORnet, April 2022 to March 2025
Abstract Background: COVID-19 vaccinations, therapeutics, and immunity from infection have reduced COVID-19 severity. It is unknown to what extent previously identified risk factors, age and underlying medical conditions (UC), remain associated with severe COVID-19 incidence. Methods: Using electronic health record (EH...