Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

161 questions · 161 findings · 1 reviews · Airways

No studies found 15 · 9.3%GRADE not reported 18 · 11.2%Very low 4 · 2.5%Low 26 · 16.1%Moderate 74 · 46%High 24 · 14.9%