Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

334 questions · 337 findings · 56 reviews

No studies found 77 · 22.8%GRADE not reported 5 · 1.5%Very low 113 · 33.5%Low 75 · 22.3%Moderate 61 · 18.1%High 6 · 1.8%