Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

134 questions · 147 findings · 17 reviews

No studies found 19 · 12.9%GRADE not reported 10 · 6.8%Very low 51 · 34.7%Low 46 · 31.3%Moderate 17 · 11.6%High 4 · 2.7%