Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

177 questions · 181 findings · 14 reviews

No studies found 41 · 22.7%GRADE not reported 6 · 3.3%Very low 72 · 39.8%Low 45 · 24.9%Moderate 13 · 7.2%High 4 · 2.2%