Development, Reliability, and Validity of the Telerehabilitation Usability Questionnaire in Neurological Diseases

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The purpose was to develop Telerehabilitation Usability Questionnaire (TrUQ) and evaluate its validity and reliability in neurological diseases. Ninety-five people with Multiple Sclerosis, stroke, and Parkinson’s disease participated in this study. Content validity was assessed by an expert panel of 5 physiotherapist experienced in telerehabilitation. Construct validity was investigated using Confirmatory Factor Analysis (CFA) and Explanatory Factor Analysis (EFA). Test-retest reliability and Internal consistency were used to evaluate the reliability of the TrUQ. A three-factor structure was determined based on EFA. Accordingly, three factors correspond to three subscales, on the TrUQ: system availability, exercise feasibility, and telerehabilitation security. Furthermore, the model fits well according to CFA results: χ²/df = 1.573, CFI = 0.925, IFI = 0.929, GFI = 0.909, and RMSEA = 0.078. The questionnaire was proven to have an acceptable reliability level (Cronbach’s alpha= 0.712) and it was found that all items were necessary. Finally, a 10-item version was obtained, and TrUQ was shown to have acceptable test–retest reliability (ICC=645) TrUQ is a valid and reliable questionnaire can be used to measure usability of the telerehabilitation systems in neurological diseases. Adaptation to different languages and diseases is recommended to be widely applicable.