Absolute and relative reliability of percentage of syllables stuttered and severity rating scales

Karimi, H; O'Brian, S; Onslow, M; Jones, M

Absolute and relative reliability of percentage of syllables stuttered and severity rating scales

Karimi, H O'Brian, S

Onslow, M

Jones, M

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Publisher:: American Speech-Language-Hearing Association
Publication Type:: Journal Article
Citation:: Journal of Speech, Language, and Hearing Research, 2014, 57, (4), pp. 1284-1295
Issue Date:: 2014-08

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Field	Value	Language
dc.contributor.author	Karimi, H
dc.contributor.author	O'Brian, S https://orcid.org/0000-0002-0882-1909
dc.contributor.author	Onslow, M https://orcid.org/0000-0003-2629-2390
dc.contributor.author	Jones, M
dc.date.accessioned	2025-01-30T12:17:54Z
dc.date.available	2025-01-30T12:17:54Z
dc.date.issued	2014-08
dc.identifier.citation	Journal of Speech, Language, and Hearing Research, 2014, 57, (4), pp. 1284-1295
dc.identifier.issn	1092-4388
dc.identifier.issn	1558-9102
dc.identifier.uri	http://hdl.handle.net/10453/184696
dc.description.abstract	Percentage of syllables stuttered (%SS) and severity rating (SR) scales are measures in common use to quantify stuttering severity and its changes during basic and clinical research conditions. However, their reliability has not been assessed with indices measuring both relative and absolute reliability. This study was designed to provide such information. Relative reliability deals with the rank order of participants in a sample, whereas absolute reliability measures the closeness of scores to one other and to a hypothetical true score.Eighty-seven adult participants who stutter received a 10-min unscheduled telephone call. Three experienced judges measured %SS and also used a 9-point SR scale to measure stuttering severity from recordings of the telephone calls.Relative intrajudge and interjudge reliability were satisfactory for both scales. However, absolute intrajudge and interjudge reliability were not satisfactory. Results showed that paired-judge SR and %SS procedures improved absolute reliability compared with single-judge measures. Additionally, the paired-judge procedure improved relative reliability from high to very high levels.Measurement of group changes of stuttering severity can be done in research contexts using either %SS or SR. However, for detecting changes within individuals using such measures, a paired-judge procedure is a more reliable method.
dc.format	Print
dc.language	eng
dc.publisher	American Speech-Language-Hearing Association
dc.relation.ispartof	Journal of Speech, Language, and Hearing Research
dc.relation.isbasedon	10.1044/2014_jslhr-s-13-0106
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	1103 Clinical Sciences, 1702 Cognitive Sciences, 2004 Linguistics
dc.subject.classification	Speech-Language Pathology & Audiology
dc.subject.classification	4201 Allied health and rehabilitation science
dc.subject.classification	4704 Linguistics
dc.subject.classification	5204 Cognitive and computational psychology
dc.subject.mesh	Humans
dc.subject.mesh	Stuttering
dc.subject.mesh	Speech Production Measurement
dc.subject.mesh	Severity of Illness Index
dc.subject.mesh	Reproducibility of Results
dc.subject.mesh	Adult
dc.subject.mesh	Aged
dc.subject.mesh	Middle Aged
dc.subject.mesh	Female
dc.subject.mesh	Male
dc.subject.mesh	Young Adult
dc.subject.mesh	Adult
dc.subject.mesh	Aged
dc.subject.mesh	Female
dc.subject.mesh	Humans
dc.subject.mesh	Male
dc.subject.mesh	Middle Aged
dc.subject.mesh	Reproducibility of Results
dc.subject.mesh	Severity of Illness Index
dc.subject.mesh	Speech Production Measurement
dc.subject.mesh	Stuttering
dc.subject.mesh	Young Adult
dc.subject.mesh	Humans
dc.subject.mesh	Stuttering
dc.subject.mesh	Speech Production Measurement
dc.subject.mesh	Severity of Illness Index
dc.subject.mesh	Reproducibility of Results
dc.subject.mesh	Adult
dc.subject.mesh	Aged
dc.subject.mesh	Middle Aged
dc.subject.mesh	Female
dc.subject.mesh	Male
dc.subject.mesh	Young Adult
dc.subject.mesh	Adult
dc.subject.mesh	Aged
dc.subject.mesh	Female
dc.subject.mesh	Humans
dc.subject.mesh	Male
dc.subject.mesh	Middle Aged
dc.subject.mesh	Reproducibility of Results
dc.subject.mesh	Severity of Illness Index
dc.subject.mesh	Speech Production Measurement
dc.subject.mesh	Stuttering
dc.subject.mesh	Young Adult
dc.title	Absolute and relative reliability of percentage of syllables stuttered and severity rating scales
dc.type	Journal Article
utslib.citation.volume	57
utslib.location.activity	United States
utslib.for	1103 Clinical Sciences
utslib.for	1702 Cognitive Sciences
utslib.for	2004 Linguistics
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Health
pubs.organisational-group	University of Technology Sydney/UTS Groups
pubs.organisational-group	University of Technology Sydney/UTS Groups/Australian Stuttering Research Centre (ASRC)
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2025-01-30T12:17:52Z
pubs.issue	4
pubs.publication-status	Published
pubs.volume	57
utslib.citation.issue	4

Abstract:

Percentage of syllables stuttered (%SS) and severity rating (SR) scales are measures in common use to quantify stuttering severity and its changes during basic and clinical research conditions. However, their reliability has not been assessed with indices measuring both relative and absolute reliability. This study was designed to provide such information. Relative reliability deals with the rank order of participants in a sample, whereas absolute reliability measures the closeness of scores to one other and to a hypothetical true score.Eighty-seven adult participants who stutter received a 10-min unscheduled telephone call. Three experienced judges measured %SS and also used a 9-point SR scale to measure stuttering severity from recordings of the telephone calls.Relative intrajudge and interjudge reliability were satisfactory for both scales. However, absolute intrajudge and interjudge reliability were not satisfactory. Results showed that paired-judge SR and %SS procedures improved absolute reliability compared with single-judge measures. Additionally, the paired-judge procedure improved relative reliability from high to very high levels.Measurement of group changes of stuttering severity can be done in research contexts using either %SS or SR. However, for detecting changes within individuals using such measures, a paired-judge procedure is a more reliable method.

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http://hdl.handle.net/10453/184696