Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

329 questions · 336 findings · 32 reviews

No studies found 96 · 28.6%GRADE not reported 52 · 15.5%Very low 80 · 23.8%Low 63 · 18.8%Moderate 39 · 11.6%High 6 · 1.8%