Salivary Cortisol as a Predictor of Postoperative Fatigue
G. James Rubin, PhD,
Matthew Hotopf, PhD,
Andrew Papadopoulos, PhD and
Anthony Cleare, PhD
From the Section of General Hospital Psychiatry, Division of Psychological Medicine, Institute of Psychiatry and Guys, Kings and St. Thomas School of Medicine, Kings College London, London, UK (G.J.R., M.H., A.C.); the Section of Neurobiology of Mood Disorders, Division of Psychological Medicine, Institute of Psychiatry, Kings College London, London, UK (G.J.R., A.C.); and the Affective Disorders Unit, Bethlem Royal Hospital, South London and Maudsely NHS Trust, London, UK (A.P., A.C.).

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Figure 1. Bimodal fatigue scores 6 months after surgery. A score of 4 or more indicates clinically significant fatigue. Participants with clinically significant fatigue and who also reported having been fatigued for 6 months or more were classified as chronic fatigue cases.
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Copyright © 2005 by the American Psychosomatic Society