Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

64 questions · 66 findings · 29 reviews · Headline outcomes only

No studies found 21 · 31.8%GRADE not reported 3 · 4.5%Very low 16 · 24.2%Low 15 · 22.7%Moderate 10 · 15.2%High 1 · 1.5%