Comparison 3. Death or bronchopulmonary dysplasia (BPD).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Death or BPD at 28 days of life	15	2546	Risk Ratio (M‐H, Fixed, 95% CI)	0.92 [0.88, 0.96]
1.1 Dexamethasone	14	2293	Risk Ratio (M‐H, Fixed, 95% CI)	0.91 [0.86, 0.96]
1.2 Hydrocortisone	1	253	Risk Ratio (M‐H, Fixed, 95% CI)	1.00 [0.90, 1.12]
2 Death or BPD at 36 weeks' postmenstrual age	25	3960	Risk Ratio (M‐H, Fixed, 95% CI)	0.88 [0.83, 0.93]
2.1 Dexamethasone	16	2581	Risk Ratio (M‐H, Fixed, 95% CI)	0.87 [0.80, 0.94]
2.2 Hydrocortisone	9	1379	Risk Ratio (M‐H, Fixed, 95% CI)	0.90 [0.82, 0.99]