Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,520 questions · 1,575 findings · 175 reviews · Headline outcomes only

No studies found 239 · 15.2%GRADE not reported 59 · 3.7%Very low 337 · 21.4%Low 406 · 25.8%Moderate 410 · 26%High 124 · 7.9%