Abstract
AbstractObjective: Patients with chronic fatigue syndrome (CFS) have substantial deficits in functional capacity, but the course of these deficits over time has not often been studied. This study measured functional capacity on three occasions over a decade, in patients with CFS.Methods: The study was a longitudinal cohort study, and employed the Medical Outcomes Study Short Form-36 (SF-36) instrument to assess physical and mental/emotional functional status.Results: Physical function, as reflected in several different scales, improved modestly but significantly over time, particularly for patients aged 18-60 years and for women. Mental/emotional function was not substantially impaired at the outset of the study, and did not change over time.Conclusion: This study found that physical function tended to improve formany patients over time, despite the fact that they were aging. Physical function did not deteriorate with time.
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