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Clinical Rheumatology

, Volume 34, Issue 12, pp 2029–2039 | Cite as

Sleep quality and correlates of poor sleep in patients with rheumatoid arthritis

  • K. LøppenthinEmail author
  • B. A. Esbensen
  • P. Jennum
  • M. Østergaard
  • A. Tolver
  • T. Thomsen
  • J. Midtgaard
Original Article

Abstract

The objective of this study is to examine sleep quality and correlates of poor sleep in patients with rheumatoid arthritis (RA). Five hundred patients with RA were recruited from a rheumatology outpatient clinic and included in this cross-sectional study. Sleep quality and disturbances were assessed using the Pittsburgh Sleep Quality Index (PSQI). Other instruments included the Multidimensional Fatigue Inventory, the Epworth Sleepiness Scale, and the Health Assessment Questionnaire. Disease activity was assessed according to disease activity score DAS28-CRP-based. Complete scores on PSQI were obtained from 384 patients (77 %). In those, the prevalence of poor sleep (PSQI >5) was 61 %, and the mean global PSQI score was 7.54 (SD 4.17). A linear association was found between poor sleep and mental fatigue, reduced activity related to fatigue, physical fatigue, and general fatigue. Mental fatigue and general fatigue were independently associated with sleep quality, sleep latency, sleep duration, sleep efficiency, and daytime dysfunction. However, in the linear multivariate analysis, only general fatigue 1.06 (95 % CI 1.03–1.09) and mental fatigue 1.03 (95 % CI 1.01–1.05) were found to be significant correlates for reporting poor sleep. This study shows that a majority of patients with RA experience poor sleep and that general fatigue and mental fatigue are associated with poor sleep.

Keywords

Disease activity Fatigue Pain Rheumatoid arthritis Sleep 

Notes

Disclosures

The authors declare no conflicts of interest.

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Copyright information

© International League of Associations for Rheumatology (ILAR) 2015

Authors and Affiliations

  • K. Løppenthin
    • 1
    • 2
    Email author
  • B. A. Esbensen
    • 1
    • 2
    • 3
  • P. Jennum
    • 4
    • 5
  • M. Østergaard
    • 2
    • 5
  • A. Tolver
    • 6
  • T. Thomsen
    • 1
    • 2
  • J. Midtgaard
    • 3
    • 7
  1. 1.Research Unit of Nursing and Health Science, Glostrup HospitalUniversity of CopenhagenCopenhagenDenmark
  2. 2.Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Glostrup HospitalUniversity of CopenhagenCopenhagenDenmark
  3. 3.Department of Public Health, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
  4. 4.Danish Center for Sleep Medicine, Department of Clinical Neurophysiology, Glostrup HospitalUniversity of CopenhagenCopenhagenDenmark
  5. 5.Department of Clinical Medicine, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
  6. 6.Laboratory of Applied Statistics, Department of Mathematical SciencesUniversity of CopenhagenCopenhagenDenmark
  7. 7.The University Hospitals Centre for Health Research, Copenhagen University HospitalRigshospitaletCopenhagenDenmark

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