Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

252 questions · 271 findings · 20 reviews

No studies found 39 · 14.4%GRADE not reported 31 · 11.4%Very low 53 · 19.6%Low 86 · 31.7%Moderate 45 · 16.6%High 17 · 6.3%