| 1 Death of the baby Show forest plot | 6 | 278 | Risk Ratio (M‐H, Fixed, 95% CI) | 1.05 [0.41, 2.73] |
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| 2 Transfused for anaemia Show forest plot | 3 | 111 | Risk Ratio (M‐H, Fixed, 95% CI) | 2.01 [1.24, 3.27] |
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| 3 Transfused for low blood pressure Show forest plot | 2 | 58 | Risk Ratio (M‐H, Fixed, 95% CI) | 2.58 [1.17, 5.67] |
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| 4 Number of transfusions Show forest plot | 3 | 98 | Mean Difference (IV, Fixed, 95% CI) | 1.28 [0.58, 1.98] |
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| 5 Haematocrit at birth or 1 hour (%) Show forest plot | 3 | 112 | Mean Difference (IV, Fixed, 95% CI) | ‐3.21 [‐5.62, ‐0.80] |
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| 6 Haematocrit at 4 hours of life (%) Show forest plot | 4 | 134 | Mean Difference (IV, Fixed, 95% CI) | ‐5.40 [‐7.28, ‐3.52] |
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| 8 Serum bilirubin peak (mmol/litre) Show forest plot | 3 | 111 | Mean Difference (IV, Fixed, 95% CI) | ‐21.49 [‐38.04, ‐4.94] |
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| 9 Hyperbilirubinemia (treated) Show forest plot | 1 | 39 | Risk Ratio (M‐H, Fixed, 95% CI) | 0.95 [0.58, 1.56] |
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| 11 Inotropics for low blood pressure Show forest plot | 3 | 118 | Risk Ratio (M‐H, Fixed, 95% CI) | 2.17 [0.51, 9.12] |
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| 12 Patent ductus arteriosus Show forest plot | 3 | 118 | Risk Ratio (M‐H, Fixed, 95% CI) | 0.79 [0.36, 1.72] |
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| 13 Intraventricular haemorrhage Show forest plot | 5 | 225 | Risk Ratio (M‐H, Fixed, 95% CI) | 1.74 [1.08, 2.81] |
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| 14 Severe intraventricular haemorrhage Show forest plot | 3 | 161 | Risk Ratio (M‐H, Fixed, 95% CI) | 0.86 [0.15, 4.75] |
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| 15 Periventricular leucomalacia Show forest plot | 1 | 31 | Risk Ratio (M‐H, Fixed, 95% CI) | 0.31 [0.01, 7.15] |
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| 16 Respiratory distress syndrome Show forest plot | 2 | 75 | Risk Ratio (M‐H, Fixed, 95% CI) | 0.83 [0.59, 1.15] |
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| 17 Severe respiratory distress syndrome Show forest plot | 1 | 39 | Risk Ratio (M‐H, Fixed, 95% CI) | 1.27 [0.33, 4.93] |
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| 18 Ventilated for respiratory distress syndrome Show forest plot | 3 | 121 | Risk Ratio (M‐H, Fixed, 95% CI) | 0.91 [0.65, 1.28] |
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| 19 Surfactant treatment Show forest plot | 2 | 85 | Risk Ratio (M‐H, Fixed, 95% CI) | 0.78 [0.34, 1.79] |
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| 21 Oxygen supplementation at 28 days Show forest plot | 1 | 36 | Risk Ratio (M‐H, Fixed, 95% CI) | 6.3 [0.35, 113.81] |
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| 22 Oxygen supplementation at 36 weeks Show forest plot | 2 | 65 | Risk Ratio (M‐H, Fixed, 95% CI) | 0.97 [0.35, 2.69] |
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| 23 Necrotizing enterocolitis Show forest plot | 2 | 72 | Risk Ratio (M‐H, Fixed, 95% CI) | 2.08 [0.52, 8.37] |
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| 24 Cord pH Show forest plot | 3 | 123 | Mean Difference (IV, Fixed, 95% CI) | 0.01 [‐0.03, 0.05] |
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| 25 Apgar score at 5th minute < 8 Show forest plot | 3 | 161 | Risk Ratio (M‐H, Fixed, 95% CI) | 1.17 [0.62, 2.20] |
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| 26 Temperature on admission (degrees Celsius) Show forest plot | 1 | 39 | Mean Difference (IV, Fixed, 95% CI) | ‐0.20 [‐0.43, 0.03] |
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