Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

404 questions · 409 findings · 122 reviews

No studies found 77 · 18.8%GRADE not reported 31 · 7.6%Very low 142 · 34.7%Low 83 · 20.3%Moderate 63 · 15.4%High 13 · 3.2%