Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

231 questions · 242 findings · 123 reviews

No studies found 27 · 11.2%GRADE not reported 14 · 5.8%Very low 59 · 24.4%Low 77 · 31.8%Moderate 44 · 18.2%High 21 · 8.7%