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Evidence found and GRADE certainty

766 questions · 806 findings · 76 reviews · ENT

No studies found 293 · 36.4%GRADE not reported 6 · 0.7%Very low 244 · 30.3%Low 170 · 21.1%Moderate 85 · 10.5%High 8 · 1%

Ventilation tubes vs no treatment

Hearing ‐ return to normal *Ventilation tubes versus laser myringotomy (6 to 12 months ‐ medium‐term) Adjusted for non‐independence of within‐individual measurements Assumed ICC of 0.5 № of participants: 132 (2 RCTs) · children aged 6 months to 12 years with otitis media with effusion (OME)

It is very uncertain whether ventilation tubes changes hearing ‐ return to normal hearing Randomised by ear: normal defined… compared with no treatment (very low certainty).

1 finding from 1 review

Ventilation tubes vs myringotomy

Hearing ‐ return to normal *Ventilation tubes versus laser myringotomy (6 to 12 months ‐ medium‐term) Adjusted for non‐independence of within‐individual measurements Assumed ICC of 0.5 № of participants: 132 (2 RCTs) · children aged 6 months to 12 years with otitis media with effusion (OME)

It is very uncertain whether ventilation tubes changes hearing ‐ return to normal *Ventilation tubes versus laser… compared with myringotomy (very low certainty).

1 finding from 1 review

Ventilation tubes vs no treatment

Adverse event: persistent perforation · children aged 6 months to 12 years with otitis media with effusion (OME)

It is very uncertain whether ventilation tubes changes adverse event: persistent perforation Randomised by ear, assumed CC… compared with no treatment (very low certainty).

1 finding from 1 review

Early ventilation tubes vs watchful waiting

Hearing ‐ return to normal *Ventilation tubes versus laser myringotomy (6 to 12 months ‐ medium‐term) Adjusted for non‐independence of within‐individual measurements Assumed ICC of 0.5 № of participants: 132 (2 RCTs) · children aged 6 months to 12 years with otitis media with effusion (OME)

It is very uncertain whether early ventilation tubes changes hearing ‐ return to normal hearing Randomised by child compared with watchful waiting (treatment later if required) (very low certainty).

1 finding from 1 review

Early ventilation tubes vs watchful waiting

Presence/persistence of OME · children aged 6 months to 12 years with otitis media with effusion (OME)

It is very uncertain whether early ventilation tubes changes presence/persistence of OME Randomised by child compared with watchful waiting (treatment later if required) (very low certainty).

1 finding from 1 review

Early ventilation tubes vs watchful waiting

Adverse event: persistent perforation · children aged 6 months to 12 years with otitis media with effusion (OME)

It is very uncertain whether early ventilation tubes changes adverse event: persistent perforation compared with watchful waiting (treatment later if required) (very low certainty).

1 finding from 1 review