Table 2.

Main findings of the studies included.

References	Percentage of people treated with corticosteroids	Findings regarding corticosteroids
Liu et al. (17)	29.2	Intravenous methylprednisolone (30–80 mg/day) did not show significant benefits. Not numerical data were reported
Wang et al. (15)	44.9	Glucocorticoid therapy was associated with a greater risk of ICU admission: 26 (72.2) vs. 36 (35.3), p < 0.001
Wu et al. (16)	30.8	Administration of methylprednisolone reduced the risk of death (hazard ratio, 0.38; 95% CI, 0.20–0.72; P = 0.003) in subjects having ARDS for COVID 19
Ling et al. (14)	7.6	The duration of viral RNA detection for oropharyngeal swabs and feces in the corticosteroid treatment group was longer than that in the non-corticosteroid treatment group, which were 15 vs. 8.0 days (P = 0.013) and 20 vs. 11 days (P < 0.001).

ICU, intensive care unit; ARDS, Acute respiratory distress syndrome; COVID, coronavirus disease 2019.