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  • Title: Otoscopy and tympanometry outcomes from the National Health and Nutrition Examination Survey (NHANES).
    Author: McManus B, Harbarger C, Grillis A, Prewitt MG, Baiduc R, Block D, Paul O, Spankovich C.
    Journal: Am J Otolaryngol; 2022; 43(2):103332. PubMed ID: 34953248.
    Abstract:
    PURPOSE: The purpose of the study was to estimate the prevalence of conductive pathologies based on tympanometric and otoscopic findings in adults in the U.S. and examine relationships between abnormal findings and audiometrically defined or reported perceived hearing loss and tinnitus. MATERIALS AND METHODS: Data from 3409 individuals aged 20-69 years from the 1999-2000 and 2000-2002 cycles of the National Health and Nutrition Examination Survey (NHANES) were analyzed. Outcomes included report of ear tubes, self-perceived hearing loss, and tinnitus (yes or no). Otoscopy involved screening for presence of cerumen (ear wax) and physical abnormality for each ear. Ear-specific tympanometry included measures of middle ear pressure, external ear volume, tympanometric width, and admittance/compliance for each ear. Mean and prevalence estimates are provided applying sample weights. A multivariate ordinal regression model adjusting for age, sex, race/ethnicity, and education was used to examine relationships between otoscopy or tympanometry measures with hearing loss and tinnitus. RESULTS: Approximately 12% of the sample showed evidence of abnormal tympanometry and 12% showed evidence of abnormal otoscopy in at least one ear. Measured hearing loss was consistently related to tympanometry outcomes, in both univariate and adjusted models, but perceived hearing loss and tinnitus were not related to abnormal tympanometry or otoscopy. The most common reason for abnormal otoscopy was presence of excessive or impacted cerumen, representing an estimated 10% of the population. CONCLUSIONS: With 1 out of 10 adults having excessive cerumen, adults considering over-the-counter (OTC) hearings aids may benefit from an ear examination prior to purchase.
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