Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

241 questions · 245 findings · 22 reviews · Headline outcomes only

No studies found 61 · 24.9%GRADE not reported 30 · 12.2%Very low 45 · 18.4%Low 56 · 22.9%Moderate 38 · 15.5%High 15 · 6.1%