Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

677 questions · 719 findings · 133 reviews

No studies found 153 · 21.3%GRADE not reported 54 · 7.5%Very low 164 · 22.8%Low 199 · 27.7%Moderate 119 · 16.6%High 30 · 4.2%