Ulrich Hoppe1, Anne Hast, Thomas Hocke. 1. *Department of Audiology, ENT-Clinic, University of Erlangen-Nürnberg, Erlangen; and †Cochlear Deutschland GmbH & Co KG, Karl-Wiechert-Allee, Hannover, Germany.
Abstract
OBJECTIVE: This study defines a screening procedure for cochlear implant (CI) candidacy in hearing aid users by using simple audiometric measures. METHODS: Within this retrospective study, hearing aid performance and audiometric measures in 185 subjects (318 ears) were analyzed. By means of a linear Naive Bayes classifier, the pure-tone average and the maximum monosyllabic score (PB(max)) were used to predict the aided monosyllabic word score and CI candidacy. RESULTS: The two parameters PB(max) and four-frequency hearing threshold average can be used to predict speech perception with hearing aids with reasonable accuracy for screening purposes. The classification has a sensitivity of 87% and a specificity of 91%. The classification can be represented by a simple linear formula. CONCLUSION: CI candidacy can be predicted based on commonly used audiometric measures.Cochlear implant candidacy may be considered if the difference between the average pure-tone threshold (in decibels) and PBmax (in percent) exceeds 8.
OBJECTIVE: This study defines a screening procedure for cochlear implant (CI) candidacy in hearing aid users by using simple audiometric measures. METHODS: Within this retrospective study, hearing aid performance and audiometric measures in 185 subjects (318 ears) were analyzed. By means of a linear Naive Bayes classifier, the pure-tone average and the maximum monosyllabic score (PB(max)) were used to predict the aided monosyllabic word score and CI candidacy. RESULTS: The two parameters PB(max) and four-frequency hearing threshold average can be used to predict speech perception with hearing aids with reasonable accuracy for screening purposes. The classification has a sensitivity of 87% and a specificity of 91%. The classification can be represented by a simple linear formula. CONCLUSION: CI candidacy can be predicted based on commonly used audiometric measures.Cochlear implant candidacy may be considered if the difference between the average pure-tone threshold (in decibels) and PBmax (in percent) exceeds 8.
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