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Table 1 Pooled data from randomized clinical trials of oral magnesium supplementation in pregnancy for the prevention of adverse pregnancy outcomes

From: The BRAzil MAGnesium (BRAMAG) trial: a randomized clinical trial of oral magnesium supplementation in pregnancy for the prevention of preterm birth and perinatal and maternal morbidity

Outcome Number of participants (RCTs) included Control event rate (per 1000) Magnesium supplementation event rate (per 1000) Relative risk reduction,% (95% confidence interval)
Preterm birth < 37 weeks gestation 2275 (5) 105 67 27 (6 to 43)
Preeclampsia 474 (2) 167 145 13 (−32 to 43)
Small for gestational age birthweight < 10 percentile 1741 (3) 119 83 30 (7 to 47)
  1. Based on reference [35].