Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

65 questions · 67 findings · 36 reviews · Heart

No studies found 12 · 17.9%GRADE not reported 1 · 1.5%Very low 8 · 11.9%Low 18 · 26.9%Moderate 16 · 23.9%High 12 · 17.9%