Comparison of the Two Validated German Versions of the "Tinnitus Functional Index" for Switzerland and for Germany

Completed

• Conditions: Tinnitus, Subjective
• Interventions: Other: No intervention planned

• Registration Number: NCT03638986
• Lead Sponsor: University of Zurich

Brief Summary

Tinnitus is defined as a perception of sound without any external sound source. Chronic tinnitus is a frequent condition that can affect the quality of life. The questionnaire "Tinnitus Functional Index (TFI)" promises to be the new gold standard in tinnitus evaluation. Due to the forward and backward translation of this questionnaire, there are two different German versions of TFI for Switzerland and Germany. Both German versions were validated. The aim of this study is to compare the two German versions of the TFI with each other and to recommend the better one for the further use in tinnitus evaluation for the German speaking population.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2018-08-13
• Study First Submitted QC: 2018-08-17
• Study First Posted: 2018-08-20
• Study Start: 2018-11-01
• Primary Completion: 2020-08-01
• Study Completion: 2020-08-01
• Status Verified: 2020-11
• Last Update Submitted: 2020-11-05
• Last Update Posted: 2020-11-09

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 255

Inclusion Criteria

• Electronic given informed consent
• Older than 18 years
• Existing tinnitus
• Sufficient knowledge of the German language

Exclusion Criteria

• Insufficient knowledge of the German language
• Impossibility to fulfill an online questionnaire due to cognitive or physical limitation
• No tinnitus
• Younger than 18 years

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Swiss version first	No intervention planned	This group will first complete the Swiss version and second the German version of the TFI
German version first	No intervention planned	This group will first complete the German version and second the Swiss version of the TFI

Primary Outcome Measures

Name	Time	Method
Comparison of the TFI sumscore of both German versions	20 minutes	TFI sumscore ranges from 0 to 100

Secondary Outcome Measures

Name	Time	Method
Factor analysis of the two German TFI versions	20 minutes

Trial Locations

Locations (2)

University Hospital Zurich; 🇨🇭 Zürich, Zurich, Switzerland

Universitätsmedizin Berlin, Tinnituszentrum der Charité; 🇩🇪 Berlin, Germany