Comparison 1. Mortality at different ages.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1.1 Neonatal mortality (up to 28 days)	20	2933	Risk Ratio (M‐H, Fixed, 95% CI)	1.01 [0.87, 1.18]
1.1.1 Dexamethasone	16	2576	Risk Ratio (M‐H, Fixed, 95% CI)	1.05 [0.90, 1.23]
1.1.2 Hydrocortisone	4	357	Risk Ratio (M‐H, Fixed, 95% CI)	0.77 [0.49, 1.21]
1.2 Mortality at 36 weeks	27	4176	Risk Ratio (M‐H, Fixed, 95% CI)	1.01 [0.90, 1.13]
1.2.1 Dexamethasone	17	2791	Risk Ratio (M‐H, Fixed, 95% CI)	1.08 [0.94, 1.23]
1.2.2 Hydrocortisone	10	1385	Risk Ratio (M‐H, Fixed, 95% CI)	0.85 [0.67, 1.06]
1.3 Mortality to hospital discharge	29	4164	Risk Ratio (M‐H, Fixed, 95% CI)	0.96 [0.85, 1.07]
1.3.1 Dexamethasone	18	2731	Risk Ratio (M‐H, Fixed, 95% CI)	1.03 [0.90, 1.19]
1.3.2 Hydrocortisone	11	1433	Risk Ratio (M‐H, Fixed, 95% CI)	0.80 [0.65, 0.99]
1.4 Mortality at latest reported age	31	4373	Risk Ratio (M‐H, Fixed, 95% CI)	0.95 [0.85, 1.06]
1.4.1 Dexamethasone	20	2940	Risk Ratio (M‐H, Fixed, 95% CI)	1.02 [0.90, 1.16]
1.4.2 Hydrocortisone	11	1433	Risk Ratio (M‐H, Fixed, 95% CI)	0.80 [0.65, 0.99]