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

Overview

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.

Full Title of Study: “Prevalidation of the First German Version of the Vocal Fatigue Index (VFI)””

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: N/A
    • Intervention Model: Sequential Assignment
    • Primary Purpose: Health Services Research
    • Masking: None (Open Label)
  • Study Primary Completion Date: December 31, 2023

Interventions

  • 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

Arms, Groups and Cohorts

  • Other: Vocal Fatigue Index (VFI)
    • Standardized Questionnaire assessing vocal fatigue

Clinical Trial Outcome Measures

Primary Measures

  • Validity of the first German version ot the Vocal Fatigue Index (VFI) compared to the VHI9i and VTD
    • Time Frame: one day
    • testing validity of the first German version ot the Vocal Fatigue Index (VFI) compared to the VHI9i and VTD

Secondary Measures

  • Reliability of the first German version ot the Vocal Fatigue Index (VFI) compared to the VHI9i and VTD
    • Time Frame: one day
    • testing reliability of the first German version ot the Vocal Fatigue Index (VFI) compared to the VHI9i and VTD

Participating in This Clinical Trial

Inclusion Criteria

  • age > 18 years – voice disorder (all etiologies) Exclusion Criteria:

  • age < 18 Jahre – current voice therapy – psychological disease – botox injection in the Larynx – inability to independently fill out the questionnaire

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: 99 Years

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • University of Zurich
  • Provider of Information About this Clinical Study
    • Sponsor
  • Overall Contact(s)
    • Joerg Bohlender, KD Dr., 044 255 58 30, joerg.bohlender@usz.ch

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