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Comparison 12: Subgroup analysis: high‐income countries versus low‐ and middle‐income countries for the comparison of high‐dose dexamethasone (12 mg or higher) versus low‐dose dexamethasone (6 mg to 8mg) for hospitalised individuals with a confirmed diagnosis of symptomatic COVID‐19, Outcome 1: All‐cause mortality up to 30 days
