Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

146 questions · 151 findings · 10 reviews · Headline outcomes only

No studies found 50 · 33.1%GRADE not reported 2 · 1.3%Very low 14 · 9.3%Low 43 · 28.5%Moderate 31 · 20.5%High 11 · 7.3%