Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

465 questions · 491 findings · 45 reviews

No studies found 117 · 23.8%GRADE not reported 35 · 7.1%Very low 131 · 26.7%Low 133 · 27.1%Moderate 61 · 12.4%High 14 · 2.9%