Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

304 questions · 310 findings · 155 reviews

No studies found 103 · 33.2%GRADE not reported 22 · 7.1%Very low 66 · 21.3%Low 57 · 18.4%Moderate 45 · 14.5%High 17 · 5.5%