Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

181 questions · 186 findings · 22 reviews

No studies found 27 · 14.5%GRADE not reported 31 · 16.7%Very low 75 · 40.3%Low 22 · 11.8%Moderate 21 · 11.3%High 10 · 5.4%