Comparison 2. Subgroup analysis: respiratory support for the comparison of corticosteroids plus standard care versus standard care (plus/minus placebo) for hospitalised individuals with a confirmed or suspected diagnosis of symptomatic COVID‐19.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
2.1 All‐cause mortality up to 30 days	4	7137	Risk Ratio (M‐H, Random, 95% CI)	0.91 [0.81, 1.03]
2.1.1 No oxygen	1	1535	Risk Ratio (M‐H, Random, 95% CI)	1.27 [1.00, 1.61]
2.1.2 Low‐flow oxygen only	2	85	Risk Ratio (M‐H, Random, 95% CI)	0.90 [0.50, 1.63]
2.1.3 NIV, high‐flow, and low‐flow oxygen combined	1	3883	Risk Ratio (M‐H, Random, 95% CI)	0.89 [0.79, 1.00]
2.1.4 NIV or high‐flow oxygen only	2	195	Risk Ratio (M‐H, Random, 95% CI)	0.91 [0.53, 1.58]
2.1.5 Invasive ventilation	3	1439	Risk Ratio (M‐H, Random, 95% CI)	0.85 [0.70, 1.04]