Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

269 questions · 282 findings · 133 reviews

No studies found 40 · 14.2%GRADE not reported 69 · 24.5%Very low 60 · 21.3%Low 69 · 24.5%Moderate 37 · 13.1%High 7 · 2.5%