Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

318 questions · 325 findings · 93 reviews

No studies found 89 · 27.4%GRADE not reported 18 · 5.5%Very low 89 · 27.4%Low 81 · 24.9%Moderate 40 · 12.3%High 8 · 2.5%