Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

182 questions · 183 findings · 20 reviews · Headline outcomes only

No studies found 46 · 25.1%GRADE not reported 5 · 2.7%Very low 51 · 27.9%Low 37 · 20.2%Moderate 34 · 18.6%High 10 · 5.5%