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SUMMARY Fatigue is among the most common and disabling symptoms of multiple sclerosis. Clinicians usually assess fatigue by asking people to describe and rate their fatigue in a self-report instrument. This paper evaluates the clinical usefulness and the scientific properties of a selection of various self-report instruments for fatigue. To be selected, instruments had to assess fatigue or a related concept, have some published information on reliability and validity, be used in at least one clinical trial of fatigue with people with multiple sclerosis, and demonstrate validity in people with MS. Five fatigue specific scales and four subscales of quality of life instruments were selected and evaluated. In occupational therapy, the fatigue subscales or items of quality of life measurements give limited information about the quality of fatigue. The selection of an instrument may depend on the clinical setting or trial design.
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Kos et al. (2004) studied this question.
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