Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

83 questions · 90 findings · 12 reviews · Airways

No studies found 5 · 5.6%GRADE not reported 1 · 1.1%Very low 16 · 17.8%Low 40 · 44.4%Moderate 25 · 27.8%High 3 · 3.3%