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Are fatigue scales the same? A content comparison using the International Classification of Functioning, Disability
Alia A Alghwiri1, Khader A Almhdawi2, Gregory Marchetti3
1Department of Physiotherapy, The University of Jordan, Amman, Jordan.
Background:
Fatigue is a common impairment in a wide range of disorders. Numerous fatigue scales have been designed in an attempt to quantify this impairment without any clear distinction between them. The International Classification of Functioning, Disability and Health (ICF) is a useful tool for content comparison of measurement scales.
Objective:
To explore the content of generic fatigue scales using the ICF.
Methods:
Twenty generic fatigue scales were identified and linked to the ICF by two health care professionals according to the established linking rules. The contents of the 20 scales were compared and the inter-rater agreement was estimated using kappa coefficients.
Results:
The content of generic fatigue scales varies and was found to focus mostly on body functions, activities and participation components of the ICF with a moderate to high degree of inter-observer agreement.
Conclusions:
The content comparison of fatigue questionnaires would assist clinicians and researchers in selecting the most appropriate measurement for use and precisely analyze the results of these measurements.
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