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Ear Preference and Interaural Threshold Asymmetry.

Jolie L Chang1, Camille M Huwyler, Kristine L Cueva

  • 1Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, San Francisco, California.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
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PubMed
Summary
This summary is machine-generated.

Ear preference strength correlates with hearing asymmetry and disability. Stronger ear preference indicates greater hearing loss, aiding in quicker identification of patients needing audiology evaluation.

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Area of Science:

  • Audiology
  • Hearing Science
  • Speech and Hearing Sciences

Background:

  • Ear preference, the tendency to favor one ear for hearing, is common but its relationship with objective measures of hearing loss is not fully understood.
  • Understanding this relationship can improve diagnostic efficiency in audiology.

Purpose of the Study:

  • To define the relationships among ear preference strength, audiometric interaural asymmetry magnitude, and hearing impairment.
  • To establish whether patient-reported ear preference can serve as a clinical indicator for hearing asymmetry.

Main Methods:

  • A prospective, cross-sectional study was conducted in an academic audiology clinic with adult participants.
  • Participants were categorized into normal hearing, symmetric hearing loss, and asymmetric hearing loss groups.
  • Ear preference strength, hearing disability (Speech, Spatial, and Qualities of Hearing scale), and audiometric interaural threshold asymmetry were assessed.

Main Results:

  • Receiver operating characteristic curves demonstrated good to excellent classifier performance for ear preference strength in predicting audiometric asymmetry.
  • A clear mapping emerged: no preference (< 15 dB), somewhat (15-29 dB), strongly (30-44 dB), and completely (≥ 45 dB) ear preference corresponded to increasing interaural threshold asymmetry.
  • Complete dependence on one ear was linked to the most significant decline in spatial hearing function.

Conclusions:

  • Categorical ratings of ear preference strength can be reliably mapped to ranges of audiometric threshold asymmetry and spatial hearing disability.
  • Inquiring about ear preference strength in clinical practice can expedite the identification of individuals with asymmetric hearing.
  • This approach can facilitate prompt evaluation and treatment for patients with hearing asymmetry.