Impact of diabetes mellitus and co-morbidities on mortality in patients with COVID-19: A single-center retrospective study.

Objectives: To describe the effect of diabetes mellitus (DM) on clinical outcomes of patients admitted with COVID-19 infection.

Methods: We carried out a single center, observational, retrospective study. We included adult patients with laboratory-confirmed diagnosis of COVID-19 admitted to a tertiary hospital in Jeddah, Saudi Arabia, from April 2020 to December 2020.