Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

469 questions · 483 findings · 63 reviews

No studies found 117 · 24.2%GRADE not reported 13 · 2.7%Very low 68 · 14.1%Low 141 · 29.2%Moderate 112 · 23.2%High 32 · 6.6%