Reliability of Broadband Middle-Ear Power Reflectance in Younger and Older Adults: Application of Generalizability Theory Purpose To assess the reliability of broadband middle-ear power reflectance (BMEPR) and transmittance profiles for chirp and tonal stimuli using generalizability theory (GT). Method In adults without a history of middle-ear disease, the authors assessed the reliability of BMEPR to chirp and tonal stimuli using a multivariate approach ... Research Article
Research Article  |   December 01, 2013
Reliability of Broadband Middle-Ear Power Reflectance in Younger and Older Adults: Application of Generalizability Theory
 
Author Affiliations & Notes
  • Marty J. Mahoney
    Wayne State University, Detroit, MI
  • Dennis J. McFarland
    The Wadsworth Center, New York State Department of Health, Albany
  • MiChelle S. Carpenter
    Wayne State University, Detroit, MI
  • Sabahet Rizvi
    Wayne State University, Detroit, MI
  • Anthony T. Cacace
    Wayne State University, Detroit, MI
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication.×
  • Correspondence to Anthony T. Cacace: cacacea@wayne.edu
  • Editor: Larry Humes
    Editor: Larry Humes×
Article Information
Special Populations / Older Adults & Aging / Research Issues, Methods & Evidence-Based Practice / Research Articles
Research Article   |   December 01, 2013
Reliability of Broadband Middle-Ear Power Reflectance in Younger and Older Adults: Application of Generalizability Theory
American Journal of Audiology, December 2013, Vol. 22, 241-251. doi:10.1044/1059-0889(2013/12-0063)
History: Received November 6, 2012 , Revised March 18, 2013 , Accepted March 21, 2013
 
American Journal of Audiology, December 2013, Vol. 22, 241-251. doi:10.1044/1059-0889(2013/12-0063)
History: Received November 6, 2012; Revised March 18, 2013; Accepted March 21, 2013

Purpose To assess the reliability of broadband middle-ear power reflectance (BMEPR) and transmittance profiles for chirp and tonal stimuli using generalizability theory (GT).

Method In adults without a history of middle-ear disease, the authors assessed the reliability of BMEPR to chirp and tonal stimuli using a multivariate approach based on an analysis of variance model (GT). For comparisons with other published studies, Pearson's product–moment correlation coefficients (Pearson's r) also were used.

Results Based on GT with chirp stimuli, overall BMEPR measures had good reliability; however, the reliability of individual profiles across frequencies and ears was less than optimal. Lower generalizability coefficients were found when transmittance was evaluated. Test–retest reliability using Pearson's r was better for right versus left ears, and mid-frequencies were generally more reliable than those at either extreme of the frequency range. In contrast, tonal stimuli had higher generalizability coefficients and Pearson's r values than chirps for all frequencies tested; Pearson's r values were also higher for right versus left ears.

Conclusion The authors extended the use of GT as a preferred way to evaluate reliability of BMEPR and transmittance profiles for chirps and tones because it allows for a more comprehensive evaluation compared with unidimensional pairwise correlations.

Acknowledgments
Data were collected by the first and third authors as part of a capstone research project for satisfying the Doctor of Audiology degree; Sabahet Rizvi analyzed the tonal data, as part of a separate research project. Portions of this work were presented as a poster at the 2010 annual meeting of the American Auditory Society in Scottsdale, Arizona, and at the 2010 annual Michigan–Toledo P30 Post-ARO Podium and Poster Meeting in Ann Arbor, Michigan, sponsored by the Kresge Hearing Research Laboratory, University of Michigan. We thank Robert H. Margolis for constructive comments and suggestions.
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