Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

335 questions · 338 findings · 129 reviews

No studies found 114 · 33.7%GRADE not reported 50 · 14.8%Very low 47 · 13.9%Low 57 · 16.9%Moderate 64 · 18.9%High 6 · 1.8%