NCT03378609

Prevalidation of the First German Version of the Vocal Fatigue Index (VFI)

Prevalidation of the First German Version of the Vocal Fatigue Index (VFI)"

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 81 (actual)
• Sponsor: University of Zurich · Academic / Other
• Sex: All
• Age: 18 Years – 99 Years
• Healthy volunteers: Not accepted

Summary

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.

Conditions

• Vocal Fatigue

Interventions

Type	Name	Description
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

Timeline

• Start date: 2018-12-01
• Primary completion: 2022-12-31
• Completion: 2023-03-08
• First posted: 2017-12-20
• Last updated: 2024-05-16

Locations

1 site across 1 country: Switzerland