Abstract
Objective
To describe the prevalence of and evaluate the factors associated with fatigue patients with psoriatic arthritis (PsA) in an Asian population.
Methods
We used baseline data from a registry of patients with PsA attending an outpatient clinic of a tertiary hospital in Singapore. Demographic data and disease characteristics were evaluated. Fatigue was assessed by question one of the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI-F) and the vitality domain of the Medical Outcome Survey, Short-Form 36 (SF-36 VT). We evaluated clusters of variables, and individual variables in association with fatigue.
Results
We included 131 patients (50.4% men, 63.4% Chinese, median PsA duration 21.0 months) with completed data for fatigue. Forty-five patients (34%) experienced severe fatigue (defined by BASDAI-F > 5/10). We used principal component analysis and identified five clusters of variables that explained 62.9% of the variance of all factors. Of these, disease activity and impact, and disease chronicity were significantly associated with BASDAI-F and SF-36 VT. In multivariable analyses, back pain, peripheral joint pain and patient global assessment were associated with BASDAI-F, whereas peripheral joint pain and mental health were associated with SF-36 VT.
Conclusion
PsA-associated fatigue is prevalent in this Asian PsA cohort and is associated with disease activity, impact and chronicity.
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Code availability
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References
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YYL was supported by the National Medical Research Council, Singapore (NMRC/CSA-INV/0022/2017). The funding sources had no role in the study design, data collection, analysis, interpretation of data, manuscript writing, or decision to submit.
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YYL and WF conceptualized the study design. YYL acquired the data. JSQT and YYL performed the data analysis. All authors performed the data interpretation. JSQT and YYL wrote the first draft of the manuscript and all authors revised it critically for important intellectual content. All authors approved the final version of the manuscript to be published and agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
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YYL has received speaking fee from Novartis, Janssen, Eli Lilly and AbbVie (all under US$10,000).
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The SingHealth Centralized Institutional Review Board approved the study protocol (CIRB Ref: 2012/498/E).
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This work has previously been submitted for the eular congress 2020 with the following abstract publication (doi: 10.1136/annrheumdis-2020-eular.2068): Tan Jsq, Fong W, Kwan Yh, Leung Yy (2020) ab0836 prevalence and determinants of fatigue in psoriatic arthritis in an asian population. Annals of the Rheumatic Diseases 79 (suppl 1):1723
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Tan, J.S.Q., Fong, W., Kwan, Y.H. et al. Prevalence and variables associated with fatigue in psoriatic arthritis: a cross-sectional study. Rheumatol Int 40, 1825–1834 (2020). https://doi.org/10.1007/s00296-020-04678-2
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DOI: https://doi.org/10.1007/s00296-020-04678-2