Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

101 questions · 102 findings · 12 reviews · Headline outcomes only

No studies found 33 · 32.4%GRADE not reported 1 · 1%Very low 23 · 22.5%Low 29 · 28.4%Moderate 14 · 13.7%High 2 · 2%