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.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE
Enrollment
81
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
ORL Klinik
Zurich, Switzerland
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
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