Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

245 questions · 277 findings · 32 reviews

No studies found 48 · 17.3%GRADE not reported 109 · 39.4%Very low 70 · 25.3%Low 22 · 7.9%Moderate 19 · 6.9%High 9 · 3.2%