Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

766 questions · 806 findings · 76 reviews · ENT

No studies found 293 · 36.4%GRADE not reported 6 · 0.7%Very low 244 · 30.3%Low 170 · 21.1%Moderate 85 · 10.5%High 8 · 1%