Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

82 questions · 83 findings · 60 reviews

No studies found 4 · 4.8%GRADE not reported 9 · 10.8%Very low 25 · 30.1%Low 26 · 31.3%Moderate 12 · 14.5%High 7 · 8.4%