Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

767 questions · 780 findings · 55 reviews · Public Health · Headline outcomes only

No studies found 162 · 20.8%GRADE not reported 52 · 6.7%Very low 231 · 29.6%Low 191 · 24.5%Moderate 122 · 15.6%High 22 · 2.8%