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Table 3.6 continuedAuthorYearReferenceCountryStudy designPatientpopulationInterventionControlNichols et al1998[178]USAObservationalcohort studyn=76 (99 ears)Age: 1–12 years (mean 4.75years)Tube types:Paparella, Reuter bobbin,Sheehy, T-tubeRemoval of tube, freshenededges, patching with paper,gelfoam or fatLentsch et al2000[176]USARetrospective n=201273 tubes (Collar Bobbin,Tytan, Duravent, Paparella II)Tube removal due to:Granulationretained tube >2–3 yearspersistent otorrheaBingham et al1989[180]UnitedKingdomCCTn=33, (34 ears)Age: 2–67 years(Mean: 13 years)Ventilation tube retentiontime: 3–93 months,mean 31.7 monthsAll tubes removeddue to dischargeDifferent ventilating tubes188Rörbehandling vid inflammation i mellanörat

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