Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

801 questions · 875 findings · 91 reviews

No studies found 182 · 20.8%GRADE not reported 220 · 25.1%Very low 229 · 26.2%Low 128 · 14.6%Moderate 76 · 8.7%High 40 · 4.6%