The interobserver and test-retest variability of the dysphonia severity index

Marieke Hakkesteegt; Marjan Wieringa; Michael Brocaar; PGH (Paul) Mulder; L Feenstra

doi:10.1159/000114650

The interobserver and test-retest variability of the dysphonia severity index

Marieke Hakkesteegt, Marjan Wieringa, Michael Brocaar, PGH (Paul) Mulder, L Feenstra

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

Objective: The purpose of this study was to investigate the interobserver variability and the test-retest variability of the Dysphonia Severity Index (DSI), a multiparametric instrument to assess voice quality. Methods: The DSI was measured in 30 nonsmoking volunteers without voice complaints or voice disorders by two speech pathologists. The subjects were measured on 3 different days, with an interval of 1 week. Results: The difference in DSI between two observers (interobserver difference) was not significant. The intraclass correlation coefficient for the DSI was 0.79. The standard deviation of the difference between two duplicate measurements by different observers was 1.27. Conclusion: Differences in measurements between different observers were not significant. The intraclass correlation coefficient of the DSI was 0.79, which is to be considered good. Differences in DSI within one patient need to be larger than 2.49 to be significant. Copyright (c) 2008 S. Karger AG, Basel.

Original language	Undefined/Unknown
Pages (from-to)	86-90
Number of pages	5
Journal	Folia Phoniatrica et Logopaedica
Volume	60
Issue number	2
DOIs	https://doi.org/10.1159/000114650
Publication status	Published - 2008

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EMC HRS-01-62-01

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10.1159/000114650

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http://hdl.handle.net/1765/30055

Cite this

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title = "The interobserver and test-retest variability of the dysphonia severity index",

abstract = "Objective: The purpose of this study was to investigate the interobserver variability and the test-retest variability of the Dysphonia Severity Index (DSI), a multiparametric instrument to assess voice quality. Methods: The DSI was measured in 30 nonsmoking volunteers without voice complaints or voice disorders by two speech pathologists. The subjects were measured on 3 different days, with an interval of 1 week. Results: The difference in DSI between two observers (interobserver difference) was not significant. The intraclass correlation coefficient for the DSI was 0.79. The standard deviation of the difference between two duplicate measurements by different observers was 1.27. Conclusion: Differences in measurements between different observers were not significant. The intraclass correlation coefficient of the DSI was 0.79, which is to be considered good. Differences in DSI within one patient need to be larger than 2.49 to be significant. Copyright (c) 2008 S. Karger AG, Basel.",

author = "Marieke Hakkesteegt and Marjan Wieringa and Michael Brocaar and Mulder, {PGH (Paul)} and L Feenstra",

year = "2008",

doi = "10.1159/000114650",

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T1 - The interobserver and test-retest variability of the dysphonia severity index

AU - Hakkesteegt, Marieke

AU - Wieringa, Marjan

AU - Brocaar, Michael

AU - Mulder, PGH (Paul)

AU - Feenstra, L

PY - 2008

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