Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

285 questions · 291 findings · 148 reviews · Headline outcomes only

No studies found 93 · 32%GRADE not reported 17 · 5.8%Very low 63 · 21.6%Low 56 · 19.2%Moderate 45 · 15.5%High 17 · 5.8%