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pp.663-669
Published Date 1959/9/20
DOI https://doi.org/10.11477/mf.1492202305

 Whether or not use of hearing aid in individuals of hard of hearing has deleterious effect on the residual hearing of that person is investigated. One hundred cases of hearing aid users are tasted by employment of audiograms along with the patient's own feeling of improvement or retardation of hearing by such usage for the state of hearing.

 1. Thirty cight percent of the number reported subjective retardation of hearing.

 2. No significant difference was noted in the difference of threshold hearing taken before and after the use of the apparatus among these users who reported their hearing to be"worsened "," same"or "bettered".

 5. Only 1 case among the 100 cases examined showed a suspected evidence of progressive loss of hearing.


Copyright © 1959, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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