Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

173 questions · 174 findings · 18 reviews

No studies found 25 · 14.4%GRADE not reported 5 · 2.9%Very low 72 · 41.4%Low 50 · 28.7%Moderate 18 · 10.3%High 4 · 2.3%