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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 4.1 Neonatal mortality | 1 | Risk Ratio (M‐H, Fixed, 95% CI) | Subtotals only | |
| 4.2 Any intraventricular haemorrhage (IVH) | 1 | Risk Ratio (M‐H, Fixed, 95% CI) | Subtotals only | |
| 4.3 Bronchopulmonary dysplasia (BPD) defined as oxygen required at 28 days | 1 | Risk Ratio (M‐H, Fixed, 95% CI) | Subtotals only |
