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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Perinatal mortality | 1 | 32 | Risk Ratio (M‐H, Fixed, 95% CI) | 1.24 [0.50, 3.08] |
| 2 Days of mechanical ventilation | 1 | 32 | Mean Difference (IV, Fixed, 95% CI) | 18.0 [‐14.77, 50.77] |
| 3 Days of hospital admission | 1 | 32 | Mean Difference (IV, Fixed, 95% CI) | 17.0 [‐13.93, 47.93] |
