Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

331 questions · 361 findings · 31 reviews

No studies found 91 · 25.2%GRADE not reported 60 · 16.6%Very low 125 · 34.6%Low 49 · 13.6%Moderate 32 · 8.9%High 4 · 1.1%