Endpoits:
The primary objective of this study is to determine whether corticosteroid use was decreased hospital mortality. Moreover, the primary outcome was examined in the following subgroups according to clinical features on hospital admission: (1) severity of illness (based on the previous definition) (2) requiring mechanical ventilation on hospital admission (3) comorbidities, and (4) relation with ferritin, C-reactive protein (CRP), and lymphopenia. Hospital length of stay, transfer to ICU, and presence of complications was also examined in between groups high-dose steroid (HDS) receiving, and not. The secondary objective of this study was to investigate whether fibrosis develops in patients with high-dose steroid therapy on follow-up in three months.