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The Scientific World Journal
Volume 2014 (2014), Article ID 680659, 7 pages
http://dx.doi.org/10.1155/2014/680659
Research Article

Using the Satisfaction with Life Scale in People with Parkinson’s Disease: A Validation Study in Different European Countries

1Department of Methodology and Behavioural Sciences, University of Barcelona, Passeig Valld' Hebron 171, 08035 Barcelona, Spain
2Cambridgeshire and Peterborough NHS Foundation Trust, Beechcroft, Fulbourn Hospital, Cambridge CB21 5EF, UK
3Department of Medical Psychology, Center of Research on Psychology in Somatic Diseases (CoRPS), Tilburg University, Hilvarenbeekse Weg 60, 5022 GC Tilburg, The Netherlands
4Department of Education and Research, St. Elisabeth Hospital, 5000 LE Tilburg, The Netherlands
5Department of Public Health, Faculty of Medicine, Celal Bayar University, 45030 Manisa, Turkey
6Section of Clinical Psychology, School of Health in Social Science, University of Edinburgh, Edinburgh EH8 9AG, UK
7Department of Psychology, University of Tromsø, 9037 Tromsø, Norway

Received 23 August 2013; Accepted 22 October 2013; Published 2 February 2014

Academic Editors: C. Mangone and B. Pascual-Sedano

Copyright © 2014 Ramona Lucas-Carrasco et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. Overall, people with chronic illnesses have lower life satisfaction compared to nonclinical populations. The objective of this international study was to examine the psychometric properties of the Satisfaction with Life Scale (SWLS) in patients with Parkinson’s disease (PD). Methods. PD patients () were recruited and interviewed at different specialized services in the United Kingdom, Spain, Czech Republic, Italy, and The Netherlands. A questionnaire set including a measure of life satisfaction, quality of life (QoL), self-reported health and disability status, and sociodemographic information was used. Acceptability, reliability, and validity were examined. Results. The internal consistency was good (α = 0.81). The scale structure was satisfactory (comparative fit index = 0.99; root mean square error of approximation = 0.08). The SWLS was able to discriminate between healthy and unhealthy, disabled and nondisabled, and those perceiving a more severe impact of the disability on their lives. Concurrent validity using multiple linear regression models confirmed associations between SWLS and QoL and age. Conclusions. This study is the first to report on the use of the SWLS in PD patients in different European countries. It is a useful tool in assessing satisfaction with life in PD patients through the continuum of care.