Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

75 questions · 112 findings · 2 reviews · Headline outcomes only

No studies found 23 · 20.5%GRADE not reported 6 · 5.4%Very low 15 · 13.4%Low 9 · 8%Moderate 42 · 37.5%High 17 · 15.2%