Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

323 questions · 366 findings · 43 reviews

No studies found 135 · 36.9%GRADE not reported 40 · 10.9%Very low 85 · 23.2%Low 65 · 17.8%Moderate 38 · 10.4%High 3 · 0.8%