Comparison 1. Mortality.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Neonatal mortality (up to 28 days)	19	2950	Risk Ratio (M‐H, Fixed, 95% CI)	1.02 [0.88, 1.19]
1.1 Dexamethasone	16	2603	Risk Ratio (M‐H, Fixed, 95% CI)	1.06 [0.90, 1.24]
1.2 Hydrocortisone	3	347	Risk Ratio (M‐H, Fixed, 95% CI)	0.78 [0.50, 1.23]
2 Mortality at 36 weeks	20	3733	Risk Ratio (M‐H, Fixed, 95% CI)	1.01 [0.89, 1.14]
2.1 Dexamethasone	14	2487	Risk Ratio (M‐H, Fixed, 95% CI)	1.08 [0.94, 1.25]
2.2 Hydrocortisone	6	1246	Risk Ratio (M‐H, Fixed, 95% CI)	0.83 [0.65, 1.06]
3 Mortality to hospital discharge	30	4273	Risk Ratio (M‐H, Fixed, 95% CI)	0.95 [0.85, 1.07]
3.1 Dexamethasone	19	2840	Risk Ratio (M‐H, Fixed, 95% CI)	1.03 [0.90, 1.18]
3.2 Hydrocortisone	11	1433	Risk Ratio (M‐H, Fixed, 95% CI)	0.80 [0.65, 0.98]
4 Mortality at latest reported age	31	4373	Risk Ratio (M‐H, Fixed, 95% CI)	0.95 [0.85, 1.06]
4.1 Dexamethasone	20	2940	Risk Ratio (M‐H, Fixed, 95% CI)	1.02 [0.90, 1.16]
4.2 Hydrocortisone	11	1433	Risk Ratio (M‐H, Fixed, 95% CI)	0.80 [0.65, 0.99]