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Assessing the accuracy and reliability of application-based audiometry for hearing evaluation.

Seung Yeol Lee1, Hee Won Seo1, Seon Min Jung1

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Smartphone audiometry offers a feasible alternative for hearing assessment, particularly for normal hearing. However, accuracy decreases with hearing loss or asymmetric conditions, limiting its diagnostic use.

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Area of Science:

  • Audiology
  • Digital Health
  • Medical Technology

Background:

  • Traditional pure-tone audiometry (PTA) requires specialized equipment and environments.
  • Smartphone-based audiometry presents a potential accessible alternative for hearing screening.
  • Validating these mobile applications is crucial for their clinical adoption.

Purpose of the Study:

  • To validate the accuracy and reliability of a smartphone application for pure-tone audiometry.
  • To compare smartphone-based hearing test results with conventional audiometry.
  • To assess the performance of smartphone audiometry across different hearing loss categories and asymmetry.

Main Methods:

  • Seventy subjects underwent both conventional audiometry in a sound-treated booth and a smartphone application-based hearing test.
  • The 'Care4Ear' smartphone application was utilized for the mobile audiometry.
  • Hearing thresholds were categorized into three groups (A, B, C) based on severity.

Main Results:

  • A significant correlation (r=0.69, p<0.01) was observed between smartphone and conventional audiometry.
  • The application showed high accuracy (97.4% hit rate) for normal hearing (Group A).
  • Accuracy was significantly lower for moderate (Group B, 22.2%) and severe (Group C, 38.5%) hearing loss, and for asymmetric hearing loss.

Conclusions:

  • Smartphone audiometry is a feasible tool for hearing evaluation, especially in individuals with normal hearing.
  • The diagnostic utility of smartphone audiometry is limited in cases of hearing loss or asymmetric hearing loss due to potential inaccuracies.
  • Further refinement of smartphone-based hearing tests is needed for broader clinical application.