Translation and adaptation of the Fatigue Severity Scale for use in Portugal
High School of Health Sciences Jean Piaget, College Jean Piaget, Lordosa, 3515-776 Viseu - Portugal. Applied nursing research: ANR
(Impact Factor: 0.73).
06/2012; 25(3):212-7. DOI: 10.1016/j.apnr.2010.11.001
The Fatigue Severity Scale (FSS) is a widely used instrument to measure the impact of fatigue on specific types of functioning. This study aims to translate and test the reliability and validity of the Portuguese version of the FSS. The questionnaire was administered to a worker sample of 424 nurses. Reliability analysis showed satisfactory results (Cronbach's alpha coefficient = .87). The test-retest reliability was .85. The principal component analysis showed that the FSS was a measure with a one-factor structure. The construct validity of the total FSS score was assessed by correlation with Maslach Burnout Inventory (MBI) score, Depression Anxiety Stress Scale (DASS) score, and Visual Analogue Scale (VAS) score. Each of the corresponding correlation coefficients among the total FSS score and MBI score, DASS score, and perceived fatigue score (VAS) were .55 (p < .01), .62 (p < .01), and .68 (p < .01), respectively, which shows sufficient construct validity. To measure the discriminant validity of FSS, we examined the differences in scores between groups in terms of the number of hours of sleep and overtime. The less nurses slept and the longer they worked, the higher their total FSS score became. This preliminary validation study of the Portuguese version of FSS proved that it is an acceptable, reliable, and valid measure of fatigue in the working population.
Available from: Cátia Reis
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ABSTRACT: Fatigue is a common phenomenon in airline pilots that can impair alertness and ability of crewmembers to safely operate an aircraft and perform safety related tasks. Fatigue can increase the risk of an incident or even an accident. This study provides the first prevalence values for clinically significant fatigue in Portuguese airline pilots. The hypothesis that medium/short-haul pilots may currently present different levels of fatigue than long-haul pilots was also tested.
A survey was conducted by requesting Portuguese airline pilots to complete questionnaires placed in the pilots' personal lockers from 1 April until 15 May 2012. The questionnaire included the self-response Fatigue Severity Scale (FSS) to measure subjective fatigue and some additional questions concerning perception of fatigue by pilots.
The prevalence values for total and mental fatigue achieved in the Portuguese airline pilots were: 89.3% (FSS > or = 4) and 94.1% (FSS > or = 4) when splitting the sample in two subsamples, long- and medium/short-haul pilots. Levels of total and mental fatigue were higher for medium/short-haul pilots.
The analysis of fatigue levels in each type of aviator showed that medium/short-haul pilots presented the highest levels of total and mental fatigue. This study produced the first prevalence values of total and mental fatigue among Portuguese airline pilots, which represents a great step to understanding and addressing this critical phenomenon.
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ABSTRACT: Fatigue is a symptom of systemic lupus erythematosus (SLE), which has a substantial effect on the patients' quality of life and is a parameter that is difficult to quantify. The Fatigue Severity Scale (FSS) is a validated and reliable tool for quantifying fatigue. However, no Danish translation has yet been developed or validated. The aim of this study was to translate the FSS from English into Danish and subsequently to test and describe its validity and reliability in Danish SLE patients.
The FSS was translated from English into Danish and then back-translated. The translation agreed upon by medical professionals was tested for construct validity in an unselected group of SLE patients. The final version was tested for content validity, internal consistency and test-retest reliability in a second unselected group of SLE patients using the Danish version of the Short-Form Health Survey (SF-36). All patients included were outpatients with SLE of low to moderate disease activity, and low to moderate organ damage.
Correlations were found between the Danish FSS and the main component scores of the SF-36. We found a high Cronbach's alpha as well as acceptable results of the intraclass correlation coefficient and the Bland-Altman plot.
The Danish FSS translation is a valid and reliable measure of fatigue in the Danish SLE patients included in this study.
Anne Voss reported a grant from The Danish Rheumatism Association (R33-A1836) and grants from The A.P. Møller Foundation for the Advancement of Medical Science and finally grants from the Region of South Denmark during the conduct of the study.
Available from: Hana Alsobayel
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ABSTRACT: Objectives: To develop and test the psychometric properties of an Arabic version of Fatigue Severity Scale (FSS-Ar) that can be used to measure fatigue in Arabic patients with disorders where fatigue is a major symptom. Methods: Forward and backward translations of FSS were undertaken to develop an Arabic version. The validity and reliability of the FSS-Ar was then tested on 28 patients with systemic lupus erythematosus (SLE), 24 patients with multiple sclerosis (MS), and 31 healthy subjects. Exploratory factor analysis and hypothesis testing methods were used to examine construct validity. Te correlation between FSS-Ar and the vitality domain of the RAND 36-Item Health was examined to test construct validity. Te study was conducted at the King Khalid University Hospital, Riyadh, Kingdom of Saudi Arabia between February and June 2012. Results: Using a score of ≥4.05 to define fatigue, 39 of 52 (75%) participants were fatigued compared with 10 out of 31 (32%) healthy participants. The correlation between the FSS-Ar and the vitality domain of the RAND-36 was acceptable (r = -0.46). Factor analysis showed that items of the FSS-Ar measured one underlying construct, namely, fatigue. Test-retest reliability and internal consistency of the FSS-Ar was acceptable (intraclass correlation coefficient model 2,1 = 0.80; Cronbach’s alpha = 0.84). Conclusion: Te Arabic version of the FSS demonstrated acceptable psychometric properties and was able to differentiate between patients with SLE or MS, and healthy subjects. © 2016, Saudi Arabian Armed Forces Hospital. All rights reserved.
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