Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

408 questions · 425 findings · 35 reviews

No studies found 65 · 15.3%GRADE not reported 37 · 8.7%Very low 86 · 20.2%Low 133 · 31.3%Moderate 88 · 20.7%High 16 · 3.8%