Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

157 questions · 159 findings · 13 reviews

No studies found 77 · 48.4%GRADE not reported 2 · 1.3%Very low 49 · 30.8%Low 21 · 13.2%Moderate 9 · 5.7%High 1 · 0.6%