Validity and Reliability of the German Vocal Fatigue Index in Adults With Voice Disorders.
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| Title: | Validity and Reliability of the German Vocal Fatigue Index in Adults With Voice Disorders. |
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| Authors: | Stappenbeck, Lydia Elaine1,2 elaine.stappenbeck@gmx.de, Bartel, Sylva1, Bohlender, Jörg Edgar2, Brockmann-Bauser, Meike2 |
| Source: | Journal of Speech, Language & Hearing Research. Aug2024, Vol. 67 Issue 8, p2499-2511. 13p. |
| Subject Terms: | *Data analysis, *Voice disorders, *Research methodology evaluation, *Longitudinal method, Questionnaires, Descriptive statistics, Statistics, Reliability (Personality trait) |
| Geographic Terms: | Germany |
| Abstract: | Purpose: Vocal fatigue-related symptoms, frequent in patients with voice disorders, are reliably quantifiable with the Vocal Fatigue Index (VFI) in several languages. The main aim of this work was to investigate the content and construct validity of the German Vocal Fatigue Index (VFI-D) by comparison with the German Voice Handicap Index 9 international (VHI9i) and the Vocal Tract Discomfort Scale (VTD). Moreover, the scale and retest reliability were investigated. Method: In a prospective cohort study at two tertiary care hospitals, 93 adults with all types of voice complaints filled out the VFI-D, the VHI-9i, and the VTD. Eighty-one adults (Mage = 53.5 years, SD = 15.7) completed them one time, and additional 12 patients (Mage = 53.8 years, SD = 15.6) did a test-retest, completed them twice at an interval of 1 week. The validity was assessed by Spearman's rho and Mokken scaling and the reliability by a factor analysis and a two-tailed t test. Results: Mokken scaling has proven the VFI-D as one-dimensional questionnaire (one cluster, r = .95). All VFI-D items could be assigned to one of three factors according to principal component and principal axis factor analysis. Although Factor 1 related best to the VHI9i (Φ rs = .76) and Factor 2 to the VTD (Φ rs = .74), Factor 3 correlated moderately with the VHI9i (rs = .34) and weakly with the VTD (rs = .25). Results from the first and second VFI-D completion agreed strongly (t = -1.78, p = .10). Conclusions: In this study, the content and construct validity of the VFI-D were confirmed. Also, both scale reliability with identical factors as those in the original study and retest reliability were verified. The VHI9i and VTD were highly indicative of VFI-D Factors 1 and 2, respectively. No correlation between Factor 3 and the other questionnaires was determined. Future research should evaluate which characteristics are specific to vocal fatigue versus general voice disorder-related symptoms. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Speech, Language & Hearing Research is the property of American Speech-Language-Hearing Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Education Research Complete |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: ehh DbLabel: Education Research Complete An: 178847302 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Validity and Reliability of the German Vocal Fatigue Index in Adults With Voice Disorders. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Stappenbeck%2C+Lydia+Elaine%22">Stappenbeck, Lydia Elaine</searchLink><relatesTo>1,2</relatesTo><i> elaine.stappenbeck@gmx.de</i><br /><searchLink fieldCode="AR" term="%22Bartel%2C+Sylva%22">Bartel, Sylva</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bohlender%2C+Jörg+Edgar%22">Bohlender, Jörg Edgar</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Brockmann-Bauser%2C+Meike%22">Brockmann-Bauser, Meike</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Speech%2C+Language+%26+Hearing+Research%22">Journal of Speech, Language & Hearing Research</searchLink>. Aug2024, Vol. 67 Issue 8, p2499-2511. 13p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Data+analysis%22">Data analysis</searchLink><br />*<searchLink fieldCode="DE" term="%22Voice+disorders%22">Voice disorders</searchLink><br />*<searchLink fieldCode="DE" term="%22Research+methodology+evaluation%22">Research methodology evaluation</searchLink><br />*<searchLink fieldCode="DE" term="%22Longitudinal+method%22">Longitudinal method</searchLink><br /><searchLink fieldCode="DE" term="%22Questionnaires%22">Questionnaires</searchLink><br /><searchLink fieldCode="DE" term="%22Descriptive+statistics%22">Descriptive statistics</searchLink><br /><searchLink fieldCode="DE" term="%22Statistics%22">Statistics</searchLink><br /><searchLink fieldCode="DE" term="%22Reliability+%28Personality+trait%29%22">Reliability (Personality trait)</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Germany%22">Germany</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Purpose: Vocal fatigue-related symptoms, frequent in patients with voice disorders, are reliably quantifiable with the Vocal Fatigue Index (VFI) in several languages. The main aim of this work was to investigate the content and construct validity of the German Vocal Fatigue Index (VFI-D) by comparison with the German Voice Handicap Index 9 international (VHI9i) and the Vocal Tract Discomfort Scale (VTD). Moreover, the scale and retest reliability were investigated. Method: In a prospective cohort study at two tertiary care hospitals, 93 adults with all types of voice complaints filled out the VFI-D, the VHI-9i, and the VTD. Eighty-one adults (Mage = 53.5 years, SD = 15.7) completed them one time, and additional 12 patients (Mage = 53.8 years, SD = 15.6) did a test-retest, completed them twice at an interval of 1 week. The validity was assessed by Spearman's rho and Mokken scaling and the reliability by a factor analysis and a two-tailed t test. Results: Mokken scaling has proven the VFI-D as one-dimensional questionnaire (one cluster, r = .95). All VFI-D items could be assigned to one of three factors according to principal component and principal axis factor analysis. Although Factor 1 related best to the VHI9i (Φ rs = .76) and Factor 2 to the VTD (Φ rs = .74), Factor 3 correlated moderately with the VHI9i (rs = .34) and weakly with the VTD (rs = .25). Results from the first and second VFI-D completion agreed strongly (t = -1.78, p = .10). Conclusions: In this study, the content and construct validity of the VFI-D were confirmed. Also, both scale reliability with identical factors as those in the original study and retest reliability were verified. The VHI9i and VTD were highly indicative of VFI-D Factors 1 and 2, respectively. No correlation between Factor 3 and the other questionnaires was determined. Future research should evaluate which characteristics are specific to vocal fatigue versus general voice disorder-related symptoms. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Speech, Language & Hearing Research is the property of American Speech-Language-Hearing Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1044/2024_JSLHR-23-00481 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 2499 Subjects: – SubjectFull: Data analysis Type: general – SubjectFull: Voice disorders Type: general – SubjectFull: Research methodology evaluation Type: general – SubjectFull: Longitudinal method Type: general – SubjectFull: Questionnaires Type: general – SubjectFull: Descriptive statistics Type: general – SubjectFull: Statistics Type: general – SubjectFull: Reliability (Personality trait) Type: general – SubjectFull: Germany Type: general Titles: – TitleFull: Validity and Reliability of the German Vocal Fatigue Index in Adults With Voice Disorders. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Stappenbeck, Lydia Elaine – PersonEntity: Name: NameFull: Bartel, Sylva – PersonEntity: Name: NameFull: Bohlender, Jörg Edgar – PersonEntity: Name: NameFull: Brockmann-Bauser, Meike IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 10924388 Numbering: – Type: volume Value: 67 – Type: issue Value: 8 Titles: – TitleFull: Journal of Speech, Language & Hearing Research Type: main |
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