Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

48 questions · 48 findings · 23 reviews · Headline outcomes only

No studies found 33 · 68.8%GRADE not reported 8 · 16.7%Very low 2 · 4.2%Low 2 · 4.2%Moderate 3 · 6.3%High 0 · 0%