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. 2011 Jul;42(1):1-11.
doi: 10.1016/j.jpainsymman.2010.10.261. Epub 2011 Mar 12.

Pain, depression, and fatigue as a symptom cluster in advanced cancer

Barry J A Laird  1 , Angela C Scott, Lesley A Colvin, Amy-Louise McKeon, Gordon D Murray, Kenneth C H Fearon, Marie T Fallon
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Free article

Pain, depression, and fatigue as a symptom cluster in advanced cancer

Barry J A Laird et al. J Pain Symptom Manage. 2011 Jul.
Free article

Abstract

Context: Pain, depression, and fatigue are common symptoms in cancer populations. They often coexist and have been suggested as a specific symptom cluster. Systemic inflammation (SI) may be a possible common mechanism.

Objective: This study examined whether pain, depression, and fatigue exist as a symptom cluster in advanced cancer patients with cachexia and might be related to the presence of SI.

Methods: Secondary data analysis was undertaken of two clinical trials in patients with cancer cachexia (n = 654). Pain, depression, and fatigue were assessed using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-C30. Plasma C-reactive protein (CRP) was measured as a marker of SI in a subgroup (n = 436). Multivariate analysis and a series of regression analyses were undertaken relating pain, depression, fatigue, and CRP.

Results: Pain, depression, and fatigue clustered, with between two and four times as many patients having all three symptoms as would be expected if the symptoms only coexist by chance (P < 0.001). CRP was not related to the symptom cluster. There was a strong relationship between the pattern of symptoms and physical functioning (P < 0.001).

Conclusion: Pain, depression, and fatigue is an identifiable symptom cluster in a cohort of cachexic cancer patients and is associated with reduced physical functioning.

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