Volume 13, Issue 3 (September 2015)                   Iranian Rehabilitation Journal 2015, 13(3): 32-38 | Back to browse issues page

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Heidari M, Nabavi S M, Akbarfahimi M, Salehi M, Torabi-Nami M. Psychometric Properties of the Persian Version of the Fatigue Impact Scale (FIS-P) in Patients with Multiple Sclerosis . Iranian Rehabilitation Journal 2015; 13 (3) :32-38
URL: http://irj.uswr.ac.ir/article-1-500-en.html
Psychometric Properties of the Persian Version of the Fatigue Impact Scale (FIS-P) in Patients with Multiple Sclerosis
Marzieh Heidari1 , Seyed Massood Nabavi2 , Malahat Akbarfahimi * 3, Masoud Salehi4 , Mohammad Torabi-Nami5
1- Tehran University of Medical Sciences, Tehran, Iran.
2- Department of Neurology, School of Medicine, Shahed Medical University, Tehran, Iran.
3- Department of Occupational Therapy, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran.
4- Department of Statistics and Mathematics, School of Health Management and Information Sciences, Iran University of Medical Sciences, Tehran, Iran.
5- Department of Neuroscience, School of Advanced Medical Science and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.
Abstract:   (5638 Views)

Objectives: This study was designed to evaluate the psychometric features of the Persian version of the Fatigue Impact Scale (FIS-P) tool when used in Iranian MS patients.

Methods: 140 MS patients and the equivalent number of healthy controls completed the following assessments: FIS-P, Fatigue Severity Scale (FSS), SF-36 questionnaire and  the Mini-Mental State Examination (MMSE). 

Results: A significant inverse correlation between FIS and the quality of life (SF-36 assessment tool), as well as a positive and significant correlation with the FSS were noted. The Intraclass Correlation Coefficient (ICC) values for the inter-rater reliability for the physical, cognitive, and social sections and the whole questionnaire were 0.89, 0.86, 0.95 and 0.98, respectively. The FIS Persian version was shown to possess a high reliability (with a Cronbach’s alpha  of 0.953). Likewise, the ICC values for the test-retest reliability were 0.86, 0.87, 0.92 and 0.93 for the physical, cognitive, social subscales and the whole questionnaire, respectively. This suggested a high reliability for the FIS-P.

Discussion: With a proper validity and reliability, the Persian-version of FIS retains the capability for being used in the assessment of fatigue and evaluation of the treatment and rehabilitation effects on fatigue-related symptoms among Persian-speaking patients with MS. 

Keywords: Multiple sclerosis, Fatigue, Fatigue impact scale, Psychometric, Persian
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Article type: Original Research Articles |
Received: 2015/07/14 | Accepted: 2015/08/20 | Published: 2015/09/1
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