Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

86 questions · 86 findings · 41 reviews · Headline outcomes only

No studies found 48 · 55.8%GRADE not reported 4 · 4.7%Very low 12 · 14%Low 15 · 17.4%Moderate 4 · 4.7%High 3 · 3.5%