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Development and validation of a digits-in-noise hearing test in Persian.

Lina Motlagh Zadeh1, Noah H Silbert2, Katherine Sternasty1

  • 1Communication Sciences Research Center, Cincinnati Children's Hospital, Cincinnati, OH, USA.

International Journal of Audiology
|September 9, 2020
PubMed
Summary

A new Persian digits-in-noise (DIN) hearing screening test was developed and validated. This reliable tool offers accessible hearing loss detection for Persian speakers, especially in regions with limited audiology services.

Keywords:
Speech in noisedigit tripletshearing losshearing screening testspeech reception threshold

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Area of Science:

  • Audiology
  • Speech-language pathology
  • Public health

Background:

  • Unrecognised hearing loss is more prevalent in low- and middle-income countries due to limited access to hearing services.
  • Early identification through hearing screening is crucial for managing hearing loss, particularly in underserved populations.
  • Accessible, self-administered screening tools are needed to address these disparities.

Purpose of the Study:

  • To develop and validate a Persian version of the digits-in-noise (DIN) test.
  • To create a reliable and quick hearing screening tool for Persian-speaking populations.
  • To facilitate early detection of hearing loss in regions with limited audiology resources.

Main Methods:

  • Persian digits 0-9 were recorded and presented binaurally in speech-shaped noise.
  • Speech intelligibility functions were used to equalize perceptual difficulty across stimuli.
  • The test was validated against existing English DIN tests and evaluated for test-retest reliability.

Main Results:

  • The Persian DIN test achieved a mean speech reception threshold (SRT) of -7.7 dB, comparable to English versions.
  • High test-retest reliability was confirmed, indicating consistent results.
  • Language-specific factors are important for cross-language comparisons of DIN-SRTs.

Conclusions:

  • A convenient and reliable Persian digits-in-noise (DIN) test has been developed.
  • This tool can aid in hearing screening for Persian speakers, improving access to audiology services.
  • The study highlights the need for culturally and linguistically adapted hearing screening tools.