Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

572 questions · 579 findings · 55 reviews · Headline outcomes only

No studies found 60 · 10.4%GRADE not reported 42 · 7.3%Very low 205 · 35.4%Low 210 · 36.3%Moderate 52 · 9%High 10 · 1.7%