Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,636 questions · 1,646 findings · 562 reviews · Headline outcomes only

No studies found 389 · 23.6%GRADE not reported 175 · 10.6%Very low 422 · 25.6%Low 380 · 23.1%Moderate 238 · 14.5%High 42 · 2.6%