Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

781 questions · 829 findings · 43 reviews · Headline outcomes only

No studies found 215 · 25.9%GRADE not reported 39 · 4.7%Very low 205 · 24.7%Low 208 · 25.1%Moderate 130 · 15.7%High 32 · 3.9%