evidencegaps
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What do systematic reviews say?

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Evidence found and GRADE certainty

4,721 questions · 19,640 findings · 2,039 reviews · Headline outcomes only

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No studies found 3,754 · 19.1%GRADE not reported 1,273 · 6.5%Very low 4,859 · 24.7%Low 5,568 · 28.4%Moderate 3,240 · 16.5%High 946 · 4.8%

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Probiotics vs placebo

Hypoglycaemia · preventing gestational diabetes

Probiotics showed no clear difference in hypoglycaemia as defined by trialists compared with placebo (low certainty).

1 finding from 1 review

Probiotics vs placebo

Large‐for‐gestational age · preventing gestational diabetes

Probiotics showed no clear difference in large‐for‐gestational age compared with placebo (moderate certainty).

1 finding from 1 review

Probiotics vs placebo

Perinatal mortality · preventing gestational diabetes

Probiotics showed no clear difference in perinatal mortality (stillbirth and neonatal mortality) compared with placebo (low certainty).

1 finding from 1 review