Abstract
The aim of the study was to estimate health state utility values in newly diagnosed idiopathic Parkinson’s disease (PD) for use in the assessment of health-related quality-of-life (HRQL), and in the estimation of quality-adjusted life-years (QALYs). Data from 162 patients enrolled in a community-based incidence study of PD were used to estimate health state utility values. Self-report data from the EQ-5D, a generic measure of HRQL, were used to derive preference-based health state utility values. The impact of motor and non motor symptoms, and other clinical and demographic factors, on the derived EQ-5D health state values was examined in univariate and multivariate analyses. The mean health state utility value for recently diagnosed PD patients was estimated at 0.65 ± 0.27. Significant reductions in health state values were attributable to pain (−0.18), motor functioning (−0.16), depression (−0.12), and insomnia (−0.11). Depression had its greatest impact (−0.19) in patients in the less severe stages of PD (i.e. Hoehn Yahr stages ≤2.5). This study shows, through the presentation of QALY values, that there is scope to achieve significant health gains in newly diagnosed idiopathic PD patients via improved management of pain, depression and insomnia, alongside the treatment of primary motor symptoms.
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Acknowledgments
This report/article presents independent research commissioned by the National Institute for Health Research (NIHR) under its Programme Grants for Applied Research scheme (RP-PG-0707-10124). The views expressed in this publication are those of the author(s) and not necessarily those of the NHS, the NIHR or the Department of Health. Colin Green received support in part from the NIHR through the Peninsula Collaboration for Leadership in Applied Health Research and Care. The PINE study was funded by Parkinson’s UK and the BMA Doris Hiller Award. The authors have no competing interests. We would like to acknowledge input and helpful comments concerning the statistical analysis from Dr Paul Thompson, University of Plymouth. We thank all the participants in the PINE study.
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Shearer, J., Green, C., Counsell, C.E. et al. The impact of motor and non motor symptoms on health state values in newly diagnosed idiopathic Parkinson’s disease. J Neurol 259, 462–468 (2012). https://doi.org/10.1007/s00415-011-6202-y
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DOI: https://doi.org/10.1007/s00415-011-6202-y