Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

246 questions · 246 findings · 82 reviews · Headline outcomes only

No studies found 86 · 35%GRADE not reported 15 · 6.1%Very low 55 · 22.4%Low 38 · 15.4%Moderate 45 · 18.3%High 7 · 2.8%