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Canadian Medical Association Journal, Vol 139, Issue 10 961-964, Copyright © 1988 by Canadian Medical Association

CLINICAL TRIAL

Trimethoprim-sulfamethoxazole v. amoxicillin in the treatment of acute otitis media

W. Feldman, J. Momy and C. Dulberg
Department of Pediatrics, University of Ottawa, Ontario.

Although amoxicillin has long been the preferred drug for treatment of acute otitis media, resistant strains of two relatively common causal organisms have emerged, prompting a search for other antibiotics. We performed a randomized double-blind trial comparing amoxicillin and trimethoprim-sulfamethoxazole in 221 children in whom acute otitis media was diagnosed in an outpatient setting. Diagnosis was on the basis of symptoms, otoscopic examination and acoustic reflectometry. No culture specimens were taken. A research nurse, using the same methods, evaluated patients in a follow-up home visit at around 14 days and measured compliance by examination of the medicine bottle. Equal proportions of children in the two groups were cured or improved (88% and 87%). Therapeutic efficacy was related to compliance in both groups, and there were few side effects in either group. This study had statistical power of 80% to detect a difference of 15%. We conclude that trimethoprim-sulfamethoxazole can be considered a first-line antibiotic in the treatment of acute otitis media.


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