Corticosteroids for COVID-19 patients requiring oxygen support? Yes, but not for everyone: Effect of corticosteroids on mortality and intensive care unit admission in patients with COVID-19 according to patients' oxygen requirements.

Corticosteroids reduce mortality in hospitalized patients with coronavirus disease 2019 (COVID-19), but the response seems to vary according to the level of respiratory support needed. This retrospective cohort study included COVID-19 patients with oxygen saturation (SatO ) in room air <92% admitted between March 3 and April 30, 2020. Following the interim protocol, patients could receive dexamethasone or methylprednisolone, and were classified according to oxygen requirements.