![]() ![]() ![]() There was strong evidence that interventions reduced the odds of caesarean section (0.91, 0.83 to 0.99, I 2=0% 32 studies, 11 410 women), but not for other individual complications in IPD meta-analysis. No evidence was found of differential intervention effects across subgroups, for either gestational weight gain or composite outcomes. Although summary effect estimates favoured the intervention, the reductions in maternal (odds ratio 0.90, 95% confidence interval 0.79 to 1.03, I 2=26.7% 24 studies, 8852 women) and offspring (0.94, 0.83 to 1.08, I 2=0% 18 studies, 7981 women) composite outcomes were not statistically significant. Less weight gain occurred in the intervention group than control group (mean difference −0.70 kg, 95% confidence interval −0.92 to −0.48 kg, I 2=14.1% 33 studies, 9320 women). Results IPD were obtained from 36 randomised trials (12 526 women). ![]()
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