Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

161 questions · 161 findings · 15 reviews · Headline outcomes only

No studies found 65 · 40.4%GRADE not reported 3 · 1.9%Very low 24 · 14.9%Low 31 · 19.3%Moderate 33 · 20.5%High 5 · 3.1%