Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

828 questions · 1,007 findings · 63 reviews · All outcomes

No studies found 110 · 10.9%GRADE not reported 709 · 70.4%Very low 84 · 8.3%Low 70 · 7%Moderate 33 · 3.3%High 1 · 0.1%