Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

39 questions · 45 findings · 6 reviews · Airways

No studies found 2 · 4.4%GRADE not reported 3 · 6.7%Very low 7 · 15.6%Low 18 · 40%Moderate 13 · 28.9%High 2 · 4.4%