Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

113 questions · 125 findings · 25 reviews · Headline outcomes only

No studies found 23 · 18.4%GRADE not reported 3 · 2.4%Very low 26 · 20.8%Low 41 · 32.8%Moderate 31 · 24.8%High 1 · 0.8%