Issue N# 1 - 2010
Construction and validation of a quantitative assessment of speech intelligibility for speech disorders
Authors : Dittner J, Lepage B, Woisard V, Kergadallan M, Boisteux K, Robart E, Welby-Gieusse M. (Toulouse)
Ref. : Rev Laryngol Otol Rhinol. 2010;131,1:9-14.
Article published in french
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Intelligibilty of speech measure is based on the perception of the listeners. Objective: The aim of this study was the construction and the validation of a quantitative test of speech disorders severity allowing the the follow up and the measure of management impact. Material and method: After a first step of construction and feasibility, the psychometric validation was performed. 37 patients with a speech disorder and 13 normal subjects were recorded. The reference was the global score obtained by reading a text. The whole recordings were scored by a panel of 5 judges. The test was composed by a automatic serie of words (the months of the year) with a phono-orthographic score, the semantic transcription of a list of words and sentences, a qualitative score of spontaneous speech obtained by the description of a photography. Results: The intra and inter judges reliability are correct (intraclasse coefficient of 0.97 and 0.98). The different parts of the test are well correlated to the reference proof (r= 0.75 à 0.82). Chronbach alpha is 0.98, the limits of agreement are 14.88 ± 3 on a maximum score of 88. The dispersion is enough for a good differentiation of the patients. (11 to 88, avec mean 62.93, SD 22.45) with a significant difference p< 0.002 between the control group and the population with speech disorders. Conclusion: This test constructed on the concept of a composite assessment is validated.
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