Evaluation of the Modified Fatigue Impact Scale in four different European countries

Author:

Kos D1,Kerckhofs E2,Carrea I3,Verza R4,Ramos M5,Jansa J6

Affiliation:

1. Department Physical Therapy, Rehabilitation Research, Vrije Universiteit Brussel, Laarbeeklaan 103, B-1090 Brussels, Belgium, Occupational Therapy Service, National MS Centre, Vanheylenstraat 16, B-1820 Melsbroek, Belgium,

2. Department Physical Therapy, Rehabilitation Research, Vrije Universiteit Brussel, Laarbeeklaan 103, B-1090 Brussels, Belgium

3. AISM - Rehabilitation Centre, Via Alizeri 3A, 16126 Genova, Italy

4. AISM - Rehabilitation Centre, Vicolo Cavour 14, 35030 Villaguattera di Rubano, Padova, Italy

5. Hospital de Dia de Esclerosi Multiple, C/Teodora Lamadrid 21=23, 08022 Barcelona, Spain

6. Department of Neurology, University Medical Centre Ljubljana, Zaloska 2, 1000 Ljubljana, Slovenia

Abstract

Objective: To evaluate the psychometric properties of the Modified Fatigue Impact Scale (MFIS) in four different European countries. Methods: Individuals with definite multiple sclerosis (MS) were selected from centres in Italy (n=50), Spain (n=30), Slovenia (n=50) and Belgium (n=51) and completed the MFIS and the Fatigue Severity Scale (FSS) twice (interval ≤ 3 days). Results: In all four samples, the MFIS demonstrated a good reproducibility (intraclass correlation coefficient ≥ 0.84), with no significant differences between countries (P=0.77). Moderate correlations were found between the MFIS and FSS. No significant correlations were found between the MFIS and age, gender, type of MS, duration of the disease or EDSS score. Factor analysis of all samples (n=181) could not completely confirm the original assumptions concerning the physical, cognitive and psychosocial component. The total score, the physical and the cognitive subscale of the scale were homogeneous (Cronbach’s alpha 0.92, 0.88 and 0.92, respectively), but the psychosocial subscale had a Cronbach’s alpha of 0.65. Conclusions: No cultural or linguistic differences were found in the psychometric properties of the Belgian, Italian, Slovenian or Spanish version of the MFIS. We recommend this scale for research purposes and in clinical practice. Due to the limited value of the psychosocial subscale, we recommend interpreting this subscale with caution.

Publisher

SAGE Publications

Subject

Clinical Neurology,Neurology

Reference19 articles.

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