Association Between Diabetes Severity and Risks of COVID-19 Infection and Outcomes.

Background: Little is known about whether diabetes increases the risk of COVID-19 infection and whether measures of diabetes severity are related to COVID-19 outcomes.

Objective: Investigate diabetes severity measures as potential risk factors for COVID-19 infection and COVID-19 outcomes.

Design, Participants, Measures: In integrated healthcare systems in Colorado, Oregon, and Washington, we identified a cohort of adults on February 29, 2020 (n = 1,086,918) and conducted follow-up through February 28, 2021.