Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

191 questions · 192 findings · 22 reviews

No studies found 47 · 24.5%GRADE not reported 5 · 2.6%Very low 57 · 29.7%Low 39 · 20.3%Moderate 34 · 17.7%High 10 · 5.2%