Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

111 questions · 111 findings · 29 reviews · Headline outcomes only

No studies found 82 · 73.9%GRADE not reported 1 · 0.9%Very low 15 · 13.5%Low 8 · 7.2%Moderate 4 · 3.6%High 1 · 0.9%