Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

670 questions · 686 findings · 338 reviews

No studies found 349 · 50.9%GRADE not reported 70 · 10.2%Very low 75 · 10.9%Low 75 · 10.9%Moderate 87 · 12.7%High 30 · 4.4%