Propriedade psicométrica da escala de severidade de fadiga e correlação com depressão e qualidade de vida em cirróticos

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Abstract

Background – Fatigue is a common complaint in cirrhotic patients and may be considered a debilitating symptom with negative impact on quality of life. Research on its etiology and treatment has been hampered by the lack of relevant and reproducible measures of fatigue. Objective – To evaluate the psychometric properties of the Fatigue Severity Scale (FSS) in cirrhotic patients and to correlate with depressive symptomatology and quality of life. Methods – Cross-sectional study with a convenience sample of 106 cirrhotic patients, aged between 18 and 70 years, both genders, liter­ate, pre and post liver transplantation in outpatient follow-up. Internal consistency, reproducibility, discriminant validity, criterion validity, construct validity, responsiveness criterion, depressive symptomatology and quality of life were evaluated through questionnaires between January and October 2015. Results – The mean age was 54.75±9.9 years, 65.1% male and 32.1% of the sample had cirrhosis due to hepatitis C virus. The mean FSS score was 4.74±1.64. Cronbach’s alpha was 0.93, and the Intraclass Correlation Coefficient was 0.905 (95% CI: 0.813-0.952). For discriminant validity, FSS differentiated scores from different groups (P=0.009) and presented a correlation with the Modified Fatigue Impact Scale (r=0.606, P=0.002). FSS correlated significantly and positively with depressive symptomatology and correlated negatively with the SF-36 domains for construct validity. For responsiveness, no significant changes were observed in the fatigue scores in the pre and post-liver transplantation periods (P=0.327). Conclusion – FSS showed good psychometric performance in the evaluation of fatigue in patients with cirrhosis. Fatigue presented a strong correlation with depressive symptomatology and quality of life.

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Rossi, D., Galant, L. H., & Marroni, C. A. (2017). Propriedade psicométrica da escala de severidade de fadiga e correlação com depressão e qualidade de vida em cirróticos. Arquivos de Gastroenterologia, 54(4), 344–348. https://doi.org/10.1590/s0004-2803.201700000-85

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