Comparing the accuracy and speed of manual and tracking methods of measuring hearing thresholds

Gayla L. Poling, Theresa J. Kunnel, Sumitrajit Dhar*

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Objectives: The reliability of hearing thresholds obtained using the standard clinical method (modified Hughson-Westlake) has been the focus of previous investigation given the potential for tester bias (Margolis et al., 2015). In recent years, more precise methods in laboratory studies have been used that control for sources of bias, often at the expense of longer test times. The aim of this pilot study was to compare test-retest variability and time requirement to obtain a full set of hearing thresholds (0.125 - 20 kHz) of the clinical modified Hughson-Westlake (manual) method with that of the automated, modified (single frequency) Békésy tracking method (Lee et al., 2012). Design: Hearing thresholds from 10 subjects (8 female) between 19 to 47 years old (mean = 28.3; SD = 9.4) were measured using two methods with identical test hardware and calibration. Thresholds were obtained using the modified Hughson-Westlake (manual) method and the Békésy method (tracking). Measurements using each method were repeated after one-week. Test-retest variability within each measurement method was computed across test sessions. Results from each test method as well as test time across methods were compared. Results: Test-retest variability was comparable and statistically indistinguishable between the two test methods. Thresholds were approximately 5 dB lower when measured using the tracking method. This difference was not statistically significant. The manual method of measuring thresholds was faster by approximately 4 minutes. Both methods required less time (∼ 2 mins) in the second session as compared to the first. Conclusion: Hearing thresholds obtained using the manual method can be just as reliable as those obtained using the tracking method over the large frequency range explored here (0.125 - 20 kHz). These results perhaps point to the importance of equivalent and valid calibration techniques that can overcome frequency dependent discrepancies, most prominent at higher frequencies, in the sound pressure delivered to the ear.

Original languageEnglish
Pages (from-to)e336-e340
Number of pages5
JournalEar and Hearing
Volume37
Issue number5
DOIs
Publication statusPublished - 1 Sep 2016
Externally publishedYes

Keywords

  • behavioral audiometry
  • comparative study
  • hearing loss
  • normal hearing
  • threshold assessment

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