2.3 Data Extraction:
The title and abstract of the articles included via keyword search were screened as per the study selection criteria. Full-text content screening was performedfor highly relevant studies. Full text and corresponding supplementary information of the following items were collected and recorded from the eligible studies; first author name, publication year, country, study design, types of steroid used, sample size, number of patient in intervention and control group, mortality in intervention and control group. MS Office Excel worksheet was utilized to collect the extracted information from included studies.