Abstract
Fatigue is a frequent medical symptom which has not been routinely measured. We present a 29-item fatigue assessment instrument, describe its psychometric properties, and use it to differentiate normal fatigue from fatigue related medical disorders. Differences in fatigue across a variety of medical disorders, the reproducibility of the fatigue instrument, and its convergent validity with other fatigue measures are also described.
MeSH terms
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Depressive Disorder / complications
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Depressive Disorder / psychology
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Factor Analysis, Statistical
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Fatigue / etiology
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Fatigue / psychology*
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Fatigue Syndrome, Chronic / diagnosis
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Fatigue Syndrome, Chronic / psychology
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Humans
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Lupus Erythematosus, Systemic / complications
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Lupus Erythematosus, Systemic / psychology
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Lyme Disease / complications
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Lyme Disease / psychology
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Multiple Sclerosis / complications
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Multiple Sclerosis / psychology
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Reproducibility of Results
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Severity of Illness Index
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Sick Role*