Reliability of perceptions of voice quality: evidence from a problem asthma clinic population

Sellars, C., Stanton, A.E., McConnachie, A. , Dunnet, C.P., Chapman, L.M., Bucknell, C.E. and Mackenzie, K. (2009) Reliability of perceptions of voice quality: evidence from a problem asthma clinic population. Journal of Laryngology and Otology, 123(7), pp. 755-763. (doi: 10.1017/S0022215109004605)

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<p>Introduction: Methods of perceptual voice evaluation have yet to achieve satisfactory consistency; complete acceptance of a recognised clinical protocol is still some way off.</p> <p>Materials and methods: Three speech and language therapists rated the voices of 43 patients attending the problem asthma clinic of a teaching hospital, according to the grade-roughness-breathiness-asthenicity-strain (GRBAS) scale and other perceptual categories.</p> <p>Results and analysis: Use of the GRBAS scale achieved only a 64.7 per cent inter-rater reliability and a 69.6 per cent intra-rater reliability for the grade component. One rater achieved a higher degree of consistency. Improved concordance on the GRBAS scale was observed for subjects with laryngeal abnormalities. Raters failed to reach any useful level of agreement in the other categories employed, except for perceived gender.</p> <p>Discussion: These results should sound a note of caution regarding routine adoption of the GRBAS scale for characterising voice quality for clinical purposes. The importance of training and the use of perceptual anchors for reliable perceptual rating need to be further investigated.</p>

Item Type:Articles
Glasgow Author(s) Enlighten ID:McConnachie, Professor Alex
Authors: Sellars, C., Stanton, A.E., McConnachie, A., Dunnet, C.P., Chapman, L.M., Bucknell, C.E., and Mackenzie, K.
Subjects:R Medicine > R Medicine (General)
College/School:College of Medical Veterinary and Life Sciences > School of Health & Wellbeing > Robertson Centre
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Journal Name:Journal of Laryngology and Otology
Publisher:Cambridge University Press
ISSN (Online):1748-5460
Published Online:02 March 2009
Copyright Holders:Copyright © 2009 JLO
First Published:First published in Journal of Laryngology and Otology 123(7):755-763
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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