Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

322 questions · 356 findings · 39 reviews

No studies found 67 · 18.8%GRADE not reported 15 · 4.2%Very low 107 · 30.1%Low 122 · 34.3%Moderate 44 · 12.4%High 1 · 0.3%