Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

216 questions · 220 findings · 26 reviews

No studies found 45 · 20.5%GRADE not reported 16 · 7.3%Very low 92 · 41.8%Low 61 · 27.7%Moderate 5 · 2.3%High 1 · 0.5%