2.2 Study selection criteria:
The studies were included on basis of the inclusion and exclusion criteria. The inclusion criteria considered in the selection of studies were adult COVID-19 patients (aged 18 years or above), infection of COVID-19 confirmed through rapid antigen test or RT-PCR, the corticosteroid therapy given in at least one arm of the treatment. The exclusion criteria considered for selection of studies were review articles, case reports, editorials, and studies having only in-vitro or preclinical data and published in other than English language,.