Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

78 questions · 78 findings · 22 reviews · Headline outcomes only

No studies found 31 · 39.7%GRADE not reported 0 · 0%Very low 11 · 14.1%Low 15 · 19.2%Moderate 15 · 19.2%High 6 · 7.7%