Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

74 questions · 76 findings · 8 reviews · Airways

No studies found 31 · 40.8%GRADE not reported 7 · 9.2%Very low 17 · 22.4%Low 11 · 14.5%Moderate 9 · 11.8%High 1 · 1.3%