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ORIGINAL ARTICLE
Year : 2022  |  Volume : 39  |  Issue : 2  |  Page : 109-114

The reliability and validity of the Turkish version of the fatigue assessment scale in patients with multiple sclerosis


1 Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Ege University, İzmir, Turkey
2 Department of Elderly Care, Köyceğiz Vocational School of Health Services, Muğla Sıtkı Koçman University, Muğla, Turkey
3 Department of Neurology, Faculty of Medicine, Ege University, İzmir, Turkey

Correspondence Address:
Fatih Özden
Department of Elderly Care, Köyceğiz Vocational School of Health Services, Muğla Sıtkı Koçman University, 48800, Köyceğiz, Muğla
Turkey
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/nsn.nsn_142_21

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Objective: To demonstrate the psychometric properties of the Turkish Fatigue Assessment Scale (FAS). Materials and Methods: A total of 104 patients were recruited. The patients were assessed twice, 1 week apart. Patients completed the FAS, Fatigue Severity Scale (FSS), EuroQol-5 dimensions-3 L (EQ-5D-3 L), and Beck Depression Scale (BDS) in the initial assessment. Thirty-four patients completed the FAS again in the second assessment. Results: The mean age of the patients with multiple sclerosis (MS) was 37.6 ± 10.1 years. The intraclass correlation coefficient (ICC) of the FAS was excellent (ICC = 0.812). The Cronbach alpha coefficient of the FAS was 0.914. The alpha of the FAS was excellent (>0.80). Standard error of measurement and minimal detectable change of the FAS were 3.51 and 9.73 respectively. The relationship between the FAS (test, retest) and the FSS was excellent (r1 = 0.767, r2 = 0.782, P < 0.01). The EQ-5D-3 L index score was both strongly related with FAS (test, retest) (r1 = −0.500, r2 = −0.745, P < 0.01). The EQ-5D-3 L Visual Analog Scale score was also highly correlated with FAS (test, retest) (r1 = −0.536, r2 = −0.764, P < 0.01). Besides, FAS (test, retest) scores were strongly correlated with BDS total scores (r1 = 0.540, r2 = 0.571, P < 0.01). Conclusions: The Turkish FAS is a reliable and valid scale for individuals with MS.


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