Outcome | Number of studies included in meta-analysis | OR | 95% CI | I2 value |
---|---|---|---|---|
4 | 1.01 | 0.60–1.72 | 44% | |
3 | 1.09 | 0.66–1.78 | 0% | |
Preterm premature rupture of membranes [28, 30, 34, 35, 41, 42, 45, 48, 61, 65] | 10 | 0.82 | 0.51–1.31 | 70% |
Premature rupture of membranes [29, 31, 33, 36, 38, 39, 41, 45, 46, 51, 57, 66, 71, 79, 80] | 15 | 1.02 | 0.74–1.41 | 64% |
9 | 1.02 | 0.78–1.34 | 41% | |
Small for gestational age [49] | 1 | 1.80 | 90% CI 1.17–2.77 | N/A |
2 | 1.20 | 0.59–2.41 | 0% | |
Neonatal death [45] | 1 | 1.08 | 0.46–2.53 | N/A |