Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

123 questions · 131 findings · 19 reviews

No studies found 28 · 21.4%GRADE not reported 13 · 9.9%Very low 23 · 17.6%Low 45 · 34.4%Moderate 19 · 14.5%High 3 · 2.3%