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Follow-uptimeDrop-outrateOutcomeStudy qualityComments12 months Ad + VT: 7%VT: 17%Number of episodes OM:Ad + VT: 176VT: 138nsNumber with >3 episodes of OMin 12 months: no differenceMediumDiagnoses not welldescribed2 years Ad: 5%Sulfioxazole:31%Placebo: 25%Intervention failure after 6 months:Ad: 42%Sulfa: 34%Placebo: 52%nsIntervention failure after 24 months:Ad: 76%Sulfa: 60%Placebo: 76%nsMean number of episodesin 6 months:Ad: 1.3Sulfa: 1.0Placebo: 1.3 (0.9)nsMediumMean7 monthsup to2 yearsof age6.7% in theVT-groupunderwentAd duringthe follow-upperiodRate of AOM episodesper person year:VT-group: 2.40VT + Ad: 2.05nsMediumRandomisation wasperformed before parentswere asked about consent,for ethical reasons. Ledto uneven allocation. Thisdid not affect the outcomeaccording to the authorsThe table continues on the next pagekapitel 3 • Resultat av litteraturgranskningen 101

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