Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

966 questions · 1,015 findings · 90 reviews · Headline outcomes only

No studies found 256 · 25.2%GRADE not reported 62 · 6.1%Very low 271 · 26.7%Low 269 · 26.5%Moderate 111 · 10.9%High 46 · 4.5%

Intervention not reported

Gestational diabetes mellitus · pregnant women (women with pre‐existing type 1 or type 2 diabetes are NOT included)

It is very uncertain whether the intervention changes gestational diabetes mellitus (very low certainty).

1 finding from 1 review