Academic Journal
Validity and Reliability of the Turkish Version of the Glottal Function Index.
| Τίτλος: | Validity and Reliability of the Turkish Version of the Glottal Function Index. |
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| Συγγραφείς: | Ulger N; Department of Audiology and Speech Disorders, Institute of Health Sciences, Ankara University, Ankara, Turkey., Hancer H; Department of Audiology, Faculty of Health Sciences, Baskent University, Ankara, Turkey. Electronic address: halehancer@gmail.com., Tokgoz-Yilmaz S; Department of Audiology, Faculty of Health Sciences, Ankara University, Ankara, Turkey., Dursun G; Department of Otolaryngology, Faculty of Medicine, Ankara University, Ankara, Turkey. |
| Πηγή: | Journal of voice : official journal of the Voice Foundation [J Voice] 2026 Sep; Vol. 40 (5), pp. 1529.e1-1529.e8. Date of Electronic Publication: 2024 May 06. |
| Τύπος έκδοσης: | Journal Article; Validation Study |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Mosby Country of Publication: United States NLM ID: 8712262 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-4588 (Electronic) Linking ISSN: 08921997 NLM ISO Abbreviation: J Voice Subsets: MEDLINE |
| Imprint Name(s): | Publication: 2003- : St. Louis, MO : Mosby Original Publication: [New York, N.Y.] : Raven Press, 1987- |
| Ιατρικοί όροι (MeSH): | Voice Disorders*/diagnosis , Voice Disorders*/physiopathology , Voice Disorders*/therapy , Glottis*/physiopathology , Voice Quality* , Disability Evaluation* , Phonation*, Humans ; Reproducibility of Results ; Female ; Turkey ; Prospective Studies ; Male ; Predictive Value of Tests ; Adult ; Surveys and Questionnaires ; Young Adult ; Middle Aged ; Translating ; Case-Control Studies ; Adolescent |
| Περίληψη: | Objectives: A comprehensive evaluation is necessary for voice-related complaints, as it can benefit both the patient and physician in busy clinical settings. This study aimed to examine the Turkish adaptation of the Glottal Function Index (GFI-T), which can be quickly administered. Study Designs: Phase 1 methodological, phase 2 prospective cohort. Methods: This study was conducted in two phases. Firstly, the GFI was translated into Turkish, and its content validity was examined. The GFI-T was administered to 40 participants with voice disorders (M=41.3, SD=10) in the study group and 40 participants without voice disorders (M=37.5, SD=11.3) in the control group. Then GFI-T was readministered 2weeks later. The collected data were used for structural and convergent validity [correlation with Turkish version of the Voice Handicap Index-10 (VHI-10)], internal consistency, and test-retest reliability analyses. Secondly, 24 participants with vocal nodules were recruited separately from the first phase and were randomly divided into three groups. The first group underwent lax-vox therapy+vocal hygiene, the second group underwent resonance therapy+vocal hygiene, and the third group was provided only with vocal hygiene recommendations. The discriminative ability and construct validity of the GFI-T were examined by comparing pre- and post-assessments. Results: The results indicated that the content validity indexes were 0.98 in the experts and 0.99 in the participants. Confirmatory factor analysis of the scale confirmed that a single-factor structure and goodness-of-fit indices were suitable. The GFI-T correlated 0.92 with the Turkish version of the VHI-10. The internal consistency was 0.96, and the test-retest value was 0.99. Significant differences (P < 0.001) and correlations with the Turkish version of VHI-10 were found in intragroup comparisons. Conclusions: The GFI-T is a reliable and valid tool for the self-assessment of voice disorders. The adaptation of this study to the pediatric population is recommended. (Copyright © 2024 The Voice Foundation. Published by Elsevier Inc. All rights reserved.) |
| Competing Interests: | Declaration of Competing Interest The authors have no conflicts of interest to declare. |
| Contributed Indexing: | Keywords: Glottal Function Index; Glottal dysfunction; Vocal nodule; Voice disorder |
| Entry Date(s): | Date Created: 20240507 Date Completed: 20260907 Latest Revision: 20260907 |
| Update Code: | 20260908 |
| DOI: | 10.1016/j.jvoice.2024.04.004 |
| PMID: | 38714439 |
| Βάση Δεδομένων: | MEDLINE |
| ISSN: | 1873-4588 |
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| DOI: | 10.1016/j.jvoice.2024.04.004 |