Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

119 questions · 119 findings · 13 reviews · Headline outcomes only

No studies found 22 · 18.5%GRADE not reported 2 · 1.7%Very low 18 · 15.1%Low 37 · 31.1%Moderate 34 · 28.6%High 6 · 5%