Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

355 questions · 357 findings · 10 reviews · Headline outcomes only

No studies found 65 · 18.2%GRADE not reported 136 · 38.1%Very low 69 · 19.3%Low 61 · 17.1%Moderate 15 · 4.2%High 11 · 3.1%