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Abstract(s)
Study 1 Abstract
The Multidimensional Daily Diary of fatigue-fibromyalgia - 17 (MDF-fibro-17)
instrument explores and evaluates the different components of fibromyalgia syndromerelated fatigue. Current study examined the factor structure of the MDF-fibro-17 so that
it is possible to understand the general complexity of how fatigue directly affects
individuals with this syndrome. Additionally, a cross-cultural analysis was carried out
between a sample of Portuguese and Brazilian patients. Confirmatory Factor Analysis
was used to examine the psychometric properties, as well as the measures invariance
between the samples of these two cultures. In total, 209 Portuguese women aged
between 21 and 75 years (M = 47.44; SD = 10.73) and 429 Brazilians women, aged 16 to
77 years (M = 46.51; SD = 9.24) participated in this study. The results revealed that the
measurement model provided an acceptable fit to the data in both Portuguese and
Brazilian samples, also displaying convergent and discriminant validity. In addition, the
model showed acceptable internal consistency and was invariant between cultures. All
in all, the MDF-fibro-17 can be applied to patients with fibromyalgia syndrome in both
Portuguese and Brazilian women to measure which domain of fatigue it has the greatest
impact; thus, clarifying the possible treatments to this disease.
Study 2 Abstract Fibromyalgia syndrome (FM) is one of the most common causes of chronic musculoskeletal pain and is widespread in the mid-adult population (between 30 and 50 years old), affecting mainly female people. It is estimated that 2% to 4% of the world population suffers from FM symptoms. As it is a chronic syndrome, younger patients, who have a positive diagnosis for FM, report a fear that their symptoms will worsen as they get older. So the aims of this study, is to verify the differences in the perceptions of fatigue between patients with FM in Brazil and in Portugal, as well as to evaluate and verify if there are differences in the perceptions of fatigue between the ages of the patients and the time when they were diagnosed. In total, 209 Portuguese women aged between 21 and 75 years (M = 47.44; SD = 10.73) and 429 Brazilians women, aged 16 to 77 years (M = 46.51; SD = 9.24) participated in this study. The results revealed that Brazilian women have a greater perception of fatigue than Portuguese women. In addition, the model showed that regardless of the time of diagnosis and age of the patient, fatigue and its components remain relevant. The verification of the perception of the components of fatigue in comparison between cultures, and through the age and time of diagnosis bring significant contributions to the literature in the scope of FM.
Study 2 Abstract Fibromyalgia syndrome (FM) is one of the most common causes of chronic musculoskeletal pain and is widespread in the mid-adult population (between 30 and 50 years old), affecting mainly female people. It is estimated that 2% to 4% of the world population suffers from FM symptoms. As it is a chronic syndrome, younger patients, who have a positive diagnosis for FM, report a fear that their symptoms will worsen as they get older. So the aims of this study, is to verify the differences in the perceptions of fatigue between patients with FM in Brazil and in Portugal, as well as to evaluate and verify if there are differences in the perceptions of fatigue between the ages of the patients and the time when they were diagnosed. In total, 209 Portuguese women aged between 21 and 75 years (M = 47.44; SD = 10.73) and 429 Brazilians women, aged 16 to 77 years (M = 46.51; SD = 9.24) participated in this study. The results revealed that Brazilian women have a greater perception of fatigue than Portuguese women. In addition, the model showed that regardless of the time of diagnosis and age of the patient, fatigue and its components remain relevant. The verification of the perception of the components of fatigue in comparison between cultures, and through the age and time of diagnosis bring significant contributions to the literature in the scope of FM.
Description
Keywords
Cross-Cultural Validity Fatigue Fibromyalgia Measurement Invariance Questionnaire