Abstract
The authors administered a written survey consisting of colour images of 28 tympanic membranes (TM) to four groups of examiners: 86 medical students, 68 paediatric residents, 62 paediatricians and seven expert otoscopists. For each image, examiners were asked to indicate whether redness or bulging of the TM was present and to assign a diagnosis. The odds of diagnosing acute otitis media (AOM) was examined according to perceived redness or bulging of the TM. Medical students and paediatricians attributed approximately equal importance to isolated redness and isolated bulging of the TM. In contrast, experts placed significantly greater importance on isolated bulging of the TM compared with isolated redness of the TM. The authors suggest that training curricula emphasize the strong association between a bulging TM and a diagnosis of AOM, while de-emphasizing the association between TM redness and AOM.
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