Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

330 questions · 337 findings · 33 reviews

No studies found 96 · 28.5%GRADE not reported 53 · 15.7%Very low 80 · 23.7%Low 63 · 18.7%Moderate 39 · 11.6%High 6 · 1.8%