Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

100 questions · 102 findings · 19 reviews · Headline outcomes only

No studies found 45 · 44.1%GRADE not reported 0 · 0%Very low 43 · 42.2%Low 11 · 10.8%Moderate 3 · 2.9%High 0 · 0%