Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

217 questions · 221 findings · 21 reviews · Headline outcomes only

No studies found 67 · 30.3%GRADE not reported 18 · 8.1%Very low 81 · 36.7%Low 46 · 20.8%Moderate 9 · 4.1%High 0 · 0%