Disease activity and damage are not associated with increased levels of fatigue in systemic lupus erythematosus patients from a multiethnic cohort: LXVII
- PMID: 19714612
- PMCID: PMC2748186
- DOI: 10.1002/art.24649
Disease activity and damage are not associated with increased levels of fatigue in systemic lupus erythematosus patients from a multiethnic cohort: LXVII
Abstract
Objective: To determine the factors associated with increased levels of fatigue over the course of the disease in systemic lupus erythematosus (SLE) patients from LUpus in MInorities: NAture versus nurture, a longitudinal multiethnic cohort.
Methods: Patients with SLE (according to the American College of Rheumatology revised and updated criteria) age >/=16 years with a disease duration </=5 years at entry into the cohort, and of Hispanic (Texan or Puerto Rican), African American, or Caucasian ethnicity were studied. The association between socioeconomic/demographic characteristics, health behaviors, behavioral and psychological, functional and clinical characteristics, and fatigue was examined using generalized estimating equations to account for the longitudinal nature of the data.
Results: A total of 515 patients ( approximately 91% female) contributed 2,609 visits to these analyses. Of these patients, 93 (18.1%) were Texan-Hispanic, 101 (19.6%) were Puerto Rican-Hispanic, 169 (32.8%) were African Americans, and 152 (29.5%) were Caucasian. The mean +/- SD patient age and followup time were 37.2 +/- 12.6 years and 4.7 +/- 3.2 years, respectively. Variables associated with increased levels of fatigue in the multivariable analyses were Caucasian ethnicity, the presence of constitutional symptoms (fever, weight loss), and higher levels of pain, abnormal illness-related behaviors, and helplessness (P values between 0.0018 and <0.0001).
Conclusion: The presence of pain, abnormal illness-related behaviors, helplessness, and constitutional manifestations were associated with increased levels of fatigue. However, SLE-specific measures, such as disease activity and damage, were not. Interventions aimed at decreasing fatigue need to take into account these findings.
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Comment in
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Global versus organ-specific outcome measures in systemic lupus erythematosus: comment on the articles by Furie et al, Nikpour et al, Wallace et al, Burgos et al, and Ramos-Casals et al.Arthritis Care Res (Hoboken). 2010 Apr;62(4):580-1; author replies 581-2. doi: 10.1002/acr.20053. Arthritis Care Res (Hoboken). 2010. PMID: 20391517 No abstract available.
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