Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

188 questions · 190 findings · 13 reviews · Headline outcomes only

No studies found 50 · 26.3%GRADE not reported 0 · 0%Very low 48 · 25.3%Low 52 · 27.4%Moderate 30 · 15.8%High 10 · 5.3%