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Outcome measurement and satisfactory factor analysis of modern digital hearing aid in the elderly Chang WH 1,2 ( 張維修 ), MD, Wang JD 2 ( 王榮德 ) , MD, PhD, Liu TC 3 ( 劉殿楨 ), MD, PhD 1 Department of Otolaryngology, Taipei Hospital, Department of health, Taiwan, R.O.C.

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  1. Outcome measurement and satisfactory factor analysis of modern digital hearing aid in the elderly Chang WH1,2(張維修), MD, Wang JD2(王榮德), MD, PhD, Liu TC3(劉殿楨), MD, PhD 1 Department of Otolaryngology,Taipei Hospital, Department of health, Taiwan, R.O.C. 2 Institute of Occupational Medicine and Industrial Hygiene, National Taiwan University, Taipei, Taiwan 3 Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan Hypothesis and Background Several recent studies have shown that new technologies of modern digital hearing aids increased benefit for people with hearing impairment. Adults over the age of 65 make up approximately 65% of the total population of individuals with hearing loss. In this study, we focus on the impact of new technology on the geriatricpopulation. . Factors affecting overall satisfaction of hearing aids use were divided into two domains, patient-related factors and ear or HA-related factors. Table 1 displays the patient-related characteristics in numbers of patient. Among these factors, only severity of better ear hearing loss was statistically significant. Age, gender, binaural or monaural fitting and pre-fitting HHIE-S score were not statistically significant. Table 2 demonstrated the characteristics of ears or hearing aids. There was a significant difference between the three groups of audiometric configuration (p < 0.05), type of hearing loss (p < 0.001) and style of hearing aids (p < 0.05). There was no significant difference of channel number, directional microphone and noise reduction. . Objective To examine the objective and subjective benefit of digital hearing aids in older hearing impaired subjects, and also to find out the possible contributing factors of overall satisfaction Design: Prospective study Method and Subjects Subjects 99 subjects older than 65 years with bilateral hearing loss were included in this study. All subjects were fitted with digital, multi-channel compression hearing aids in our hearing aid clinic since 2005. Hearing aid counseling, fitting, verification, and validation were all performed by the same audiologist according to a standard procedure as follows: Fig. 1 Standard fitting procedure of HTUH National Acoustic Laboratories’ nonlinear fitting procedure, version 1 (NAL-NL1), Hearing Handicap Inventory for the Elderly-Screening Version (HHIE-S), Client Oriented Scale of Improvement (COSI) Results In total, 101 (61 male 40 female)out of 162 patients responded to the questionnaire (response rate of 62.35%) from Feb 2005 to Dec 2007. The average age of subjects was 77.95. with a range from 65 to 92. The overall satisfaction rates were as follows: extremely satisfied: 8 of 101 (7.9%), satisfied: 53 of 101 (52.5%), neither satisfied nor dissatisfied: 22.8 of 101 (23%), dissatisfied: 16 of 101 (15.8 %), and extremely dissatisfied: 1 of 101 (1%). .. Conclusion In this study, we examined new technologies of digital hearing aids and pre-fitting demographic characteristics of patients as possible predict factors of hearing aid outcome. For the elderly, four factors, severity of hearing loss, audiometric configuration, type of hearing loss and style of hearing aids influenced overall satisfaction. .

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