OBJECTIVE: To translate the disease-specific Profile of Fatigue (ProF) into Swedish and to evaluate the reliability and validity of the Swedish version. METHODS: Forward and back translations were performed. Seventy patients with primary Sjögren's syndrome (PSS), 48 control persons, and two rheumatologists participated. Test-retest reliability, internal consistency, content, construct and discriminant validity were investigated. RESULTS: The translation was accepted without modifications. The test-retest reliability varied between moderate and good (weighted Kappa = 0.51-0.63). Internal consistency was high (Cronbach's alpha = 0.97). Construct validity was proved by significant correlations of the questionnaire items with the Visual Analogue Scale (VAS) for fatigue (r(s) = 0.55-0.70), and the Physical Function (PF) (r(s) = -0.20 to -0.41) and Vitality (VT) scales (r(s) = -0.60 to -0.77) of the MOS 36-Item Short-Form Health Survey (SF-36). Content validity was mainly judged as good. A significant difference between the scorings of the patients and the scorings of the control group was seen (mean difference 1.6, p<0.005). CONCLUSION: The Swedish version of the ProF is a relatively reliable and valid instrument for the measurement of fatigue in patients with PSS.
OBJECTIVE: To translate the disease-specific Profile of Fatigue (ProF) into Swedish and to evaluate the reliability and validity of the Swedish version. METHODS: Forward and back translations were performed. Seventy patients with primary Sjögren's syndrome (PSS), 48 control persons, and two rheumatologists participated. Test-retest reliability, internal consistency, content, construct and discriminant validity were investigated. RESULTS: The translation was accepted without modifications. The test-retest reliability varied between moderate and good (weighted Kappa = 0.51-0.63). Internal consistency was high (Cronbach's alpha = 0.97). Construct validity was proved by significant correlations of the questionnaire items with the Visual Analogue Scale (VAS) for fatigue (r(s) = 0.55-0.70), and the Physical Function (PF) (r(s) = -0.20 to -0.41) and Vitality (VT) scales (r(s) = -0.60 to -0.77) of the MOS 36-Item Short-Form Health Survey (SF-36). Content validity was mainly judged as good. A significant difference between the scorings of the patients and the scorings of the control group was seen (mean difference 1.6, p<0.005). CONCLUSION: The Swedish version of the ProF is a relatively reliable and valid instrument for the measurement of fatigue in patients with PSS.
Authors: Barbara M Segal; Brian Pogatchnik; Lisa Henn; Kyle Rudser; Kathy Moser Sivils Journal: Arthritis Care Res (Hoboken) Date: 2013-08 Impact factor: 4.794
Authors: Barbara Segal; Simon J Bowman; Philip C Fox; Frederick B Vivino; Nandita Murukutla; Jeff Brodscholl; Sarika Ogale; Lachy McLean Journal: Health Qual Life Outcomes Date: 2009-05-27 Impact factor: 3.186