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Table 3.2.3.1 Effect of adenoidectomy versus no adenoidectomy on hearingin secretory otitis media (SOM).AuthorYearReferenceCountryStudydesignPatientpopulationInterventionControlMaw et al1986[80]United KingdomMaw et al1994[23,94]United KingdomRCT n=150Age: 2–9 yearsBilateral SOM >3 months(otoscopy),HL >25 dB at ≥1 frequences(mean 36.5 dB),tympanometry notshowing type AMean hearing level (dB):Ad: 33.2ADTE: 32.6No Ad: 32.4RCT n=222Age: 3–9 yearsBilateral SOM >3months (otoscopy), HL>25 dB at ≥1 frequencyTympanometry notshowing type AMean hearing level (dB):Ad: 31.6No surgery: 31.9Ad: n=47ADTE: n=47No Ad surgery: n=56All subjects had unilateralVT randomised betweenearsAd/ADTE: n=139No Ad: n=83All subjects had unilateralVT randomised betweenears120Rörbehandling vid inflammation i mellanörat

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