Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

374 questions · 393 findings · 47 reviews · Headline outcomes only

No studies found 73 · 18.6%GRADE not reported 16 · 4.1%Very low 164 · 41.7%Low 85 · 21.6%Moderate 36 · 9.2%High 19 · 4.8%