Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

423 questions · 477 findings · 107 reviews

No studies found 44 · 9.2%GRADE not reported 97 · 20.3%Very low 165 · 34.6%Low 113 · 23.7%Moderate 41 · 8.6%High 17 · 3.6%