Corticosteroids lower mortality in hospitalized patients with COVID-19 pneumonia requiring oxygen support. In this observational retrospective study (September 2020-June 2021), we explored the association between receiving home corticosteroids without oxygen supply and 30-day mortality in hospitalized patients with COVID-19 pneumonia. Among a total of 794 COVID-19 pneumonia patients, 763 were included into the study (males 68%; mean age 65 +/- 12 years), of whom 197 (26%) received home corticosteroids (mean daily prednisone equivalent-dose 40 mg +/- 12 mg; range 10-50 mg; median 50 mg; IQR 25-50 mg; for 4 days). The overall 30-day mortality of the study population was 12%. The risk of death-adjusted for age, comorbidities, administration of remdesivir and respiratory failure severity-was lower (HR 0.405; p = 0.024) in patients receiving home corticosteroids. After stratifying the study population by age categories, home corticosteroids were associated with an adjusted decrease in mortality risk in patients > 77 years (HR 0.346; p = 0.040). Home corticosteroids may lower the 30-day mortality in elderly COVID-19 patients.
