Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

134 questions · 136 findings · 11 reviews

No studies found 31 · 22.8%GRADE not reported 2 · 1.5%Very low 43 · 31.6%Low 46 · 33.8%Moderate 10 · 7.4%High 4 · 2.9%