Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

502 questions · 522 findings · 57 reviews

No studies found 184 · 35.2%GRADE not reported 153 · 29.3%Very low 86 · 16.5%Low 51 · 9.8%Moderate 38 · 7.3%High 10 · 1.9%