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Table 3.2.1 Ventilation tubes compared to watchful waitingor other treatments in secretory otitis media (SOM).AuthorYearReferenceCountryStudydesignPatientpopulationInterventionControlRovers et al2000[82]The NetherlandsBalancedRCTn=187 (386 eligible)Age: mean 19 monthsFrom a cohort of 30 000 childrenwho were routinely screened forhearing deficits at nine months.Referred to ENT after 3 failingtestsEarly VT (within 6 weeks):n=93Late VT (after 9 months):n=94Bilateral SOM >4 monthsMean (dB) hearing level(better ear):Early VT: 46.4 dBLate VT: 43.4 dBRovers et al2001[84]The NetherlandsBalancedRCTn=187 (386 eligible)Age: mean 19 monthsFrom cohort of 30 000 childrenwho were routinely screened forhearing deficits at nine months.Referred to ENT after 3 failingtestsEarly VT (within 6 weeks):n=93Late VT (after 9 months):n=94Bilateral SOM >4 monthsMean (dB) hearing level(better ear):Early VT: 46.4 dBLate VT: 43.4 dB104Rörbehandling vid inflammation i mellanörat