Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

219 questions · 228 findings · 18 reviews

No studies found 36 · 15.8%GRADE not reported 9 · 3.9%Very low 30 · 13.2%Low 71 · 31.1%Moderate 60 · 26.3%High 22 · 9.6%