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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
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.
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.
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