Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

132 questions · 138 findings · 26 reviews · Headline outcomes only

No studies found 23 · 16.7%GRADE not reported 8 · 5.8%Very low 24 · 17.4%Low 46 · 33.3%Moderate 23 · 16.7%High 14 · 10.1%