Cross-Cultural Adaptation and Psychometric Properties of Tinnitus Functional Index for Thai Patients

Vorapun  Premkraisorn; Krisna  Lertsukprasert; Rattinun   Tiravanitkul; Pawin  Numthavaj; Chanchai  Jariengprasert

Authors

Vorapun Premkraisorn Department of Communication Sciences and Disorders, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
Krisna Lertsukprasert Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand https://orcid.org/0000-0002-9379-7797
Rattinun Tiravanitkul 1Department of Communication Sciences and Disorders, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
Pawin Numthavaj Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand https://orcid.org/0000-0002-1369-2945
Chanchai Jariengprasert Department of Otolaryngology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand https://orcid.org/0000-0002-1512-9099

Keywords:

tinnitus, Thai Tinnitus Functional Index, psychometric properties, reliability

Abstract

Objective This study aims to cross-culturally translate the Tinnitus Functional Index (TFI) questionnaire into Thai, and to determine the psychometric properties of Thai version (TFI-Th).

Methods TFI was translated into a Thai version (TFI-Th) using a forward - backward translation procedure. All participants completed the following questionnaires in random order: TFI-Th, Visual analog scales, Tinnitus Handicap Inventory Thai Version (THI-T), and Thai Hospital Anxiety and Depression Scales (Thai HADS).

Results The content validity index (CVI) of the TFI-Th was high. The TFI-Th showed adequate convergent and divergent validity. The correlation between TFI-Th and other measurements were calculated and showed a high correlation with THI-T (r = 0.82), a moderate-to-high correlations with each items of VAS (r = 0.66-0.86), and a moderate correlation with depression (r = 0.58) and anxiety (r = 0.62) of Thai HADS. The internal consistency reliability of TFI-Th was excellent (μ = 0.97).

Conclusions The results of the present study revealed that the cross-cultural TFI-Th had similar reliability and validity to the original TFI and suitable for the evaluation of Thai tinnitus patients.

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