Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

97 questions · 98 findings · 53 reviews · Headline outcomes only

No studies found 13 · 13.3%GRADE not reported 1 · 1%Very low 17 · 17.3%Low 34 · 34.7%Moderate 20 · 20.4%High 13 · 13.3%