Evaluation of hearing handicap. The American Academy of Otolaryngology and American Council of Otolaryngology (AA0-ACO)
The American Academy of Otolaryngology and American Council of Otolaryngology (AAO-ACO) define hearing handicap as a disability to understand sentences under everyday vocal and listening conditions, and describe procedures for its estimation from pure-tone threshold hearing levels. Research now reveals that the AAO-ACO procedures underestimate measured hearing handicap by the equivalent of averaged pure-tone threshold losses of 17 dB at high-percentage handicaps to 35 dB at low-percentage handicaps. It is proposed that AAO-ACO procedures be modified as follows: (a) adjust hearing levels for presbycusis when estimating handicap due to noise or other factors than presbycusis; (b) change averaged hearing level "fences" from present 25 dB to 15 dB for 0 percent and from present 92 dB to 75 dB for 100 percent handicap; and (c) change weight for "worse" ear contribution from present 1/6 to 1/4 for binaural listening.
Kryter
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KD
Department of Communicative Disorders, College of Health and Human Services, San Diego State University, California 92182, USA.
D000328:Adult; D001301:Audiometry, Pure-Tone / Q000379:methods; D001309:Auditory Threshold; D004185:Disability Evaluation; D006311:Hearing Disorders / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010036:Otolaryngology; D012955:Societies, Medical; D014481:United States