Translation into Spanish and validation of the Tinnitus Functional Index (TFI).

Objective: The objectives of this study were to translate into Spanish, cross-culturally adapt and validate the TFI.

Materials And Methods: The TFI questionnaire translated into Spanish (Sp-TFI) and cross-culturally adapted following the published guidelines on cross-cultural adaptation of health questionnaires was evaluated using two indicators. Its internal consistency was assessed with Cronbach's α considering the Tinnitus Handicap Inventory (THI) as the gold standard.