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Original Article

Using cluster analysis to classify audiogram shapes

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Pages 628-633 | Received 20 Sep 2009, Accepted 22 Mar 2010, Published online: 16 Jun 2010
 

Abstract

Abstract

The purpose of this study was to design a statistical classification system of audiogram shapes in order to improve and integrate shape recognition across clinical settings. The study included 1633 adult subjects with normal hearing or symmetric sensorineural hearing impairment who underwent pure-tone audiometry between July 2007 and December 2008. K-means cluster analysis was employed to categorize audiometric shapes. Eleven audiogram shapes were identified: rising, flat, peaked 8-kHz dip, 4-kHz dip, 8-kHz dip, mild sloping, severe 8-kHz dip, sloping, abrupt loss, severe sloping, and profound abrupt loss. By using the classification system and nomenclature identified for audiogram shapes as outlined in this study, errors based on personal experiences can be reduced and a consistency can be developed across clinics.

Sumario

El propósito de este estudio fue diseñar un sistema de clasificación estadística de formas de audiogramas para mejorar e integrar el reconocimiento de formas en los diferentes contextos clínicos. El estudio incluyó 1633 sujetos adultos con audición normal o con hipoacusias sensorineurales simétricas, que se sometieron a una audiometría tonal entre julio del 2007 y diciembre del 2008. El análisis en grupo con medios K fue utilizado para organizar las formas audiométricas. Se identificaron once formas audiométricas: en ascenso, planas, con caída puntiaguda en 8 kHz, con caída en 4 kHz, con caída en 8 kHz, con pendiente suave, con caída severa en 8 kHz, con pendiente, pérdida abrupta, pendiente severa y pérdida profunda abrupta. Utilizando el sistema de clasificación y la nomenclatura identificada para las formas de audiograma conforme se delinea en este estudio, los errores basados en la experiencia personal pueden reducirse y puede desarrollarse consistencia entre las clínicas audiológicas.

Acknowledgements

Declaration of interest: The authors report no conflicts of interest. Funding: Buddhist DalinTzu Chi General Hospital (DTCRD-96 (2)-09). The authors alone are responsible for the content and writing of the paper and were involved in the data collection, analysis, and interpretation of data as well as the preparation and review of the manuscript.

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