Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

404 questions · 413 findings · 37 reviews · Headline outcomes only

No studies found 77 · 18.6%GRADE not reported 15 · 3.6%Very low 118 · 28.6%Low 128 · 31%Moderate 66 · 16%High 9 · 2.2%