Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

153 questions · 160 findings · 18 reviews · Headline outcomes only

No studies found 42 · 26.3%GRADE not reported 8 · 5%Very low 37 · 23.1%Low 59 · 36.9%Moderate 14 · 8.8%High 0 · 0%