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Development of the Device-Oriented Subjective Outcome (DOSO) scale.

Robyn M Cox1, Genevieve C Alexander1, Jingjing Xu1

  • 1University of Memphis, Memphis, TN.

Journal of the American Academy of Audiology
|November 8, 2014
PubMed
Summary

This study developed the Device-Oriented Subjective Outcome (DOSO) questionnaire to measure hearing aid effectiveness. The DOSO questionnaire is suitable for research and clinical settings, aiding comparisons between hearing aids.

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Area of Science:

  • Audiology
  • Hearing Science
  • Psychometrics

Background:

  • Previous research indicated self-report hearing aid outcomes can be device- or wearer-oriented.
  • Device-oriented outcomes showed greater independence from personality variables compared to wearer-oriented outcomes.

Purpose of the Study:

  • To develop a device-oriented questionnaire for measuring self-report hearing aid outcomes.
  • To create a tool for quantifying subjective hearing aid experiences.

Main Methods:

  • A descriptive study evaluated 140 potential items, resulting in a 66-item questionnaire.
  • Exploratory principal component analysis was applied to data from 295 adult hearing aid wearers.
  • Six components explaining 64% of the variance were identified.

Main Results:

  • Six subscales were identified through factor analysis.
  • Long and short forms of the questionnaire were developed.
  • Two equivalent versions of the short form questionnaire were created.

Conclusions:

  • The Device-Oriented Subjective Outcome (DOSO) questionnaire effectively quantifies subjective hearing aid outcomes.
  • The DOSO is valuable for both research and clinical use, particularly for comparing hearing aid performance.
  • Further research should validate the DOSO and assess its independence from personality traits.