3.3 Study Quality assessment:
Study quality assessment showed the scores ranged between 13 and 18 with an average score of 15.26. The mean score of study quality assessment with standard deviation is 1.696±0.55 for all the studies. All the studies scored high on the clarity of the research question (2.00 ± 0.00), subject representative of the pathological population (2.00 ± 0.00), and the diagnosis method of the COVID-19 (2.00 ± 0.00). In addition, corticosteroid therapy administered through intranasal, oral and intravenous routes at different doses. The lowest scoring category was the employment of a power analysis (0.3 ± 0.72). Sample size justification via power analysis was conducted by only four studies. (Table-2)