Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

115 questions · 117 findings · 57 reviews · Headline outcomes only

No studies found 47 · 40.2%GRADE not reported 1 · 0.9%Very low 25 · 21.4%Low 17 · 14.5%Moderate 20 · 17.1%High 7 · 6%