Health-related utility values of patients with primary Sjögren's syndrome and its predictors

D. Lendrem, S. Mitchell, P. McMeekin, S. Bowman, E. Price, C.T. Pease, P. Emery, J. Andrews, P. Lanyon, J. Hunter, M. Gupta, M. Bombardieri, N. Sutcliffe, C. Pitzalis, J. McLaren, A. Cooper, M. Regan, I. Giles, D. Isenberg, S. VadiveluD. Coady, B. Dasgupta, N. McHugh, S. Young-Min, R. Moots, N. Gendi, M. Akil, B. Griffiths, W.-F. Ng

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Abstract

Objectives: EuroQoL-5 dimension (EQ-5D) is a standardised preference-based tool for measurement of health-related quality of life and EQ-5D utility values can be converted to quality-adjusted life years (QALYs) to aid cost-utility analysis. This study aimed to evaluate the EQ-5D utility values of 639 patients with primary Sjögren's syndrome (PSS) in the UK. Methods: Prospective data collected using a standardised pro forma were compared with UK normative data. Relationships between utility values and the clinical and laboratory features of PSS were explored. Results: The proportion of patients with PSS reporting any problem in mobility, self-care, usual activities, pain/discomfort and anxiety/depression were 42.2%, 16.7%, 56.6%, 80.6% and 49.4%, respectively, compared with 5.4%, 1.6%, 7.9%, 30.2% and 15.7% for the UK general population. The median EQ-5D utility value was 0.691 (IQR 0.587-0.796, range -0.239 to 1.000) with a bimodal distribution. Bivariate correlation analysis revealed significant correlations between EQ-5D utility values and many clinical features of PSS, but most strongly with pain, depression and fatigue (R values>0.5). After adjusting for age and sex differences, multiple regression analysis identified pain and depression as the two most important predictors of EQ-5D utility values, accounting for 48% of the variability. Anxiety, fatigue and body mass index were other statistically significant predictors, but they accounted for
Original languageEnglish
JournalAnnals of the Rheumatic Diseases
DOIs
Publication statusPublished - 12 Jun 2013

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