Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

106 questions · 106 findings · 27 reviews · Headline outcomes only

No studies found 78 · 73.6%GRADE not reported 1 · 0.9%Very low 14 · 13.2%Low 8 · 7.5%Moderate 4 · 3.8%High 1 · 0.9%