Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

232 questions · 233 findings · 18 reviews · Public Health

No studies found 41 · 17.6%GRADE not reported 24 · 10.3%Very low 50 · 21.5%Low 63 · 27%Moderate 35 · 15%High 20 · 8.6%