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

Not Applicable

Completed

• Conditions: Vocal Fatigue
• Interventions: Other: Vocal Fatigue Index (VFI)

• Registration Number: NCT03378609
• Lead Sponsor: University of Zurich

Brief 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.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2017-12-14
• Study First Submitted QC: 2017-12-14
• Study First Posted: 2017-12-20
• Study Start: 2018-12-01
• Primary Completion: 2022-12-31
• Study Completion: 2023-03-08
• Status Verified: 2024-05
• Last Update Submitted: 2024-05-14
• Last Update Posted: 2024-05-16

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 81

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SEQUENTIAL

Arm && Interventions

Group	Intervention	Description
Vocal Fatigue Index (VFI)	Vocal Fatigue Index (VFI)	Standardized Questionnaire assessing vocal fatigue

Primary Outcome Measures

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

Secondary Outcome Measures

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

Trial Locations

Locations (1)

ORL Klinik; 🇨🇭 Zürich, Switzerland