Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

311 questions · 322 findings · 24 reviews · Headline outcomes only

No studies found 78 · 24.2%GRADE not reported 12 · 3.7%Very low 76 · 23.6%Low 76 · 23.6%Moderate 65 · 20.2%High 15 · 4.7%