Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

49 questions · 49 findings · 10 reviews · ENT

No studies found 8 · 16.3%GRADE not reported 0 · 0%Very low 12 · 24.5%Low 16 · 32.7%Moderate 10 · 20.4%High 3 · 6.1%

Endolymphatic sac decompression vs placebo (sham surgery)

Improvement in vertigo (complete resolution) at 6 to ≤ 12 months (12 months) · Ménière’s disease

It is very uncertain whether endolymphatic sac decompression changes improvement in vertigo (complete resolution) at 6 to ≤ 12 months (12… compared with placebo (sham surgery) (very low certainty).

1 finding from 1 review

Intervention not reported

Adverse events, complications and morbidity associated with (adeno)tonsillectomy and comparators Expressed as the proportion of children experiencing a serious adverse event [7 months] · children with obstructive sleep‐disordered breathing
1 finding from 1 review