1 Neonatal Mortality Show forest plot

1

122

Risk Ratio (M‐H, Fixed, 95% CI)

3.5 [0.76, 16.18]

2 Mortality within 7 days Show forest plot

2

182

Risk Ratio (M‐H, Fixed, 95% CI)

2.67 [0.72, 9.83]

3 Mortality before discharge Show forest plot

1

122

Risk Ratio (M‐H, Fixed, 95% CI)

2.33 [0.63, 8.61]

4 IVH Grade 1‐3 after 1 week Show forest plot

2

182

Risk Ratio (M‐H, Fixed, 95% CI)

1.27 [0.79, 2.05]

5 IVH Grade 3 after 1 week Show forest plot

2

182

Risk Ratio (M‐H, Fixed, 95% CI)

0.9 [0.39, 2.10]

6 PVED (grade 4 IVH) after 1 week Show forest plot

1

122

Risk Ratio (M‐H, Fixed, 95% CI)

1.17 [0.42, 3.27]

7 Patients needing surfactant Show forest plot

1

60

Risk Ratio (M‐H, Fixed, 95% CI)

1.04 [0.89, 1.21]

8 Patients with pneumothorax Show forest plot

1

60

Risk Ratio (M‐H, Fixed, 95% CI)

0.67 [0.12, 3.71]

9 Patients needing inotropes Show forest plot

1

60

Risk Ratio (M‐H, Fixed, 95% CI)

0.67 [0.21, 2.13]

10 Patients with PDA Show forest plot

1

60

Risk Ratio (M‐H, Fixed, 95% CI)

1.07 [0.65, 1.74]

11 Patients with pulmonary hemorrhage Show forest plot

1

60

Risk Ratio (M‐H, Fixed, 95% CI)

0.75 [0.18, 3.07]

12 Clinical apparent bleeding during the first week of life Show forest plot

1

122

Risk Ratio (M‐H, Fixed, 95% CI)

1.23 [0.89, 1.71]

13 Bronchopulmonary dysplasia Show forest plot

1

60

Risk Ratio (M‐H, Fixed, 95% CI)

1.25 [0.37, 4.21]