Vocal Fatigue Index (VFI): Development and Validation

Journal of Voice : Official Journal of the Voice Foundation
Chayadevie NanjundeswaranKatherine Verdolini Abbott

Abstract

To develop a psychometrically sound self-report questionnaire, the Vocal Fatigue Index (VFI), to help identify individuals with vocal fatigue (VF) and characterize their complaints. Descriptive research-scale development. Four laryngologists and six speech-language pathologists specialized in voice created a beta version of the VFI (version 1), an index of 21 statements they considered to reflect VF. Two hundred patients presenting to two different clinics completed the VFI-1. Two items from VFI-1 were excluded because of poor item-to-total correlations. The final VFI of 19 items (version 2), completed by 105 patients with voice complaints and 70 vocally healthy individuals, was assessed for its psychometric properties. Test-retest reliability for the final VFI was generally strong, as was sensitivity and specificity using the classification table under logistic regression for correctly distinguishing individuals with and without VF. Moreover, factor analysis indicated that VF may be characterized by three factors: (1) factor 1, related to tiredness of voice and voice avoidance, (2) factor 2, related to physical discomfort associated with voicing, and (3) factor 3, related to improvement of symptoms with rest. The VFI is a stan...Continue Reading

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Citations

Aug 16, 2016·Journal of Voice : Official Journal of the Voice Foundation·Robert Brinton FujikiM Preeti Sivasankar
Oct 26, 2016·Journal of Voice : Official Journal of the Voice Foundation·Chayadevie NanjundeswaranKatherine Verdolini Abbott
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Jul 22, 2020·Journal of Speech, Language, and Hearing Research : JSLHR·Emily N SnellMary J Sandage
Jul 15, 2020·International Journal of Speech-language Pathology·Elaine KwongCheuk Yiu Tse
Aug 17, 2019·Journal of Voice : Official Journal of the Voice Foundation·Sílvia Contreras-RegateroCristina Verdejo
Aug 7, 2019·Journal of Voice : Official Journal of the Voice Foundation·Edwin M L YiuDan Lu
Mar 24, 2018·Journal of Voice : Official Journal of the Voice Foundation·Mara Behlau
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Jun 4, 2018·Journal of Voice : Official Journal of the Voice Foundation·Claudia Pacheco, Mara Behlau
Jan 24, 2021·Journal of Voice : Official Journal of the Voice Foundation·Aishwarya NallamuthuPushpavathi Mariswamy
Feb 3, 2021·Journal of Voice : Official Journal of the Voice Foundation·Chaya NanjundeswaranEric Hunter
Feb 15, 2021·Journal of Voice : Official Journal of the Voice Foundation·Marco GuzmanLeandro Rodriguez
Sep 19, 2019·Journal of Voice : Official Journal of the Voice Foundation·Supraja AnandCamille Gray
Mar 6, 2021·Journal of Voice : Official Journal of the Voice Foundation·Ben Barsties V LatoszekKatrin Neumann
May 18, 2020·Journal of Voice : Official Journal of the Voice Foundation·Susan Abi Thomas, Santosh Maruthy
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May 20, 2021·The Laryngoscope·Robert Brinton FujikiM Preeti Sivasankar
May 25, 2021·Journal of Voice : Official Journal of the Voice Foundation·Elaine Kwong, Ming-Long Celia Tsang
Oct 20, 2019·Journal of Voice : Official Journal of the Voice Foundation·Aaron M Johnson, Mary J Sandage
Jun 1, 2021·Journal of Speech, Language, and Hearing Research : JSLHR·Eric J HunterMiriam van Mersbergen

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