Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

319 questions · 326 findings · 94 reviews

No studies found 89 · 27.3%GRADE not reported 19 · 5.8%Very low 89 · 27.3%Low 81 · 24.8%Moderate 40 · 12.3%High 8 · 2.5%