Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

292 questions · 331 findings · 39 reviews

No studies found 48 · 14.5%GRADE not reported 150 · 45.3%Very low 81 · 24.5%Low 24 · 7.3%Moderate 19 · 5.7%High 9 · 2.7%