Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

177 questions · 183 findings · 90 reviews

No studies found 104 · 56.8%GRADE not reported 3 · 1.6%Very low 31 · 16.9%Low 30 · 16.4%Moderate 14 · 7.7%High 1 · 0.5%