An interventional study of Vocal Fatigue Index (VFI) in Vocal Fatigue, sponsored by University of Zurich. Completed at 1 site in Switzerland. Open to participants aged 18 Years to 99 Years. Per ClinicalTrials.gov, last updated 2024-05-16.
Sponsored by University of Zurich · Not applicable, Interventional, and Health services research
Vocal fatigue has been described as a common complaint in patients with voice disorders, however to date there is no standardized questionnaire in german language to assess specific symptoms. Main aim of this study is to assess the validity of the first german version of the Vocal Fatigue Index (VFI), and english questionnaire developed for voice patients to assess vocal fatigue.
In this study patients with voice disorders will receive the patient based questionnaires "Vocal Fatigue Index (VFI)", "Voice Handicap Index 9 international (VHI 9i)" and "Vocal Tract Discomfort Scale (VTD)", the study information and consent letter together with the standard invitation letter to a voice assessment at the Department for Phoniatrics and Speech Pathology University Hospital Zurich. Data of 93 consecutive volunteering patients will be collected. Furthermore a retest using the VFI will be conducted after 1 week with 10 volunteers. Thereafter construct validity of the VFI as compared to the established voice symptom questionnaires VHI 9i and VTD will be investigated. Further test-retest reliability will be determined.
77 studies on the registry are indexed under Voice Disorders; 17 are open to participants now.
This study's enrollment of 81 is above the median of 41 across 54 interventional studies indexed under Voice Disorders.
Browse Voice Disorders studies →University of Zurich is the lead sponsor of 1,049 studies on the registry; 133 are open to participants now.
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Exclusion Criteria:
Standardized Questionnaire assessing vocal fatigue
Other: Vocal Fatigue Index (VFI)
collection of 190 consecutive data sets, participants give separate consent for participating a retest or an interview, retest will be realised with the 10 following volunteers
Also known as: Voice Handicap Index (VHI9i), Vocal Tract Discomfort Scale (VTD)
Validity of the first German version ot the Vocal Fatigue Index (VFI) compared to the VHI9i and VTD
testing validity of the first German version ot the Vocal Fatigue Index (VFI) compared to the VHI9i and VTD
Time frame: one day
Reliability of the first German version ot the Vocal Fatigue Index (VFI) compared to the VHI9i and VTD
testing reliability of the first German version ot the Vocal Fatigue Index (VFI) compared to the VHI9i and VTD
Time frame: one day
Plan to share: No
No publications or documents are linked to this record.
Ran from Dec 2018 to primary completion in Dec 2022, 48 months.
Of 30 interventional studies with no phase under Voice Disorders, half reached primary completion within 37 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 48. This study's 48 months is above that.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in May 2024. You cannot join it, but the record below documents what was studied.
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