Leire Ambrosio1, Mari Carmen Portillo2, Carmen Rodriguez-Blazquez3, Juan Carlos Martínez-Castrillo4, Mayela Rodriguez-Violante5, Marcos Serrano-Dueñas6, Víctor Campos-Arillo7, Nelida Susana Garretto8, Tomoko Arakaki8, Mario Álvarez9, Ivonne Pedroso-Ibáñez9, Ana Carvajal1, Pablo Martinez-Martin10. 1. Faculty of Nursing, University of Navarre, C/ Irunlarrea, s/n, Edificio de los Castaños, 31008 Pamplona, Navarre, Spain. 2. Faculty of Health Sciences, University of Southampton, Building 67, Highfield Campus University Road, S0171BJ, Southampton, UK. 3. National Centre of Epidemiology and CIBERNED, Carlos III Institute of Health, Av. Monforte de Lemos, 5, 28029 Madrid, Spain. 4. Neurology Unit, Ramon y Cajal University Hospital, IRYCIS. Ctra. de Colmenar Viejo, 28034 Madrid, Spain. 5. National Institute of Neurology and Neurosurgery, Movement Disorders Clinic, Insurgentes Sur 3877, Colonia La Fama, 14269 Mexico City, DF, Mexico. 6. Movement Disorder and Biostatistics Units, Neurological Service, Carlos Andrade Marín Hospital, Ayacucho s/n y Av. 18 de Septiembre, 170402 Quito, Ecuador. 7. Neuroscience Area, Vithas-Xanit International Hospital, Avenida de los Argonautas s/n, 29630 Benalmádena, Malaga, Spain. 8. Department of Neurology, JM Ramos Mejia Hospital, Urquiza 609, 1221 Buenos Aires, Argentina. 9. Department of Movement Disorders and Neurodegeneration, CIREN. Ave 25 # 15805, 11300 Cubanacán, Playa, La Habana, Cuba. 10. Faculty of Health Sciences, University of Southampton, Building 67, Highfield Campus University Road, S0171BJ, Southampton, UK. Electronic address: pmartinez@isciii.es.
Abstract
INTRODUCTION: To explore the psychometric attributes of a new Satisfaction with Life Scale (SLS-6) in a wide Spanish-speaking population with Parkinson's disease (PD). METHODS: This was an international, cross-sectional study. Several rater-based and patient-reported outcomes measures for evaluation of PD (e.g., Scales for Outcomes in Parkinson's Disease-Motor) and other constructs (e.g., Duke-UNC Functional Social Support Questionnaire, Scale for Living with Chronic Illness) were applied together with the SLS-6. Acceptability, scaling assumptions, reliability, precision, and construct validity were tested. RESULTS: The study included 324 patients from five countries, with age (mean ± standard deviation) 66.67 ± 10.68 years. None of the SLS-6 items had missing values and all acceptability parameters fulfilled the standard criteria. Scaling assumptions allowed the calculation of a summary index from items 2 to 6, complementary to the global evaluation (item 1). For these five items, Cronbach's alpha was 0.85; the corrected item-total correlation 0.53-0.73; inter-item correlation, 0.45-0.70, with an item homogeneity index of 0.55. The standard error of measurement, based on Cronbach's alpha for a single observation, was 3.48. SLS-6 correlations were moderate to strong (rs ≥ 0.35) with the patient-reported outcomes and weak to moderate with the rater-based assessments used in the study. The SLS-6 total score was significantly different according to PD severity levels established according to Hoehn and Yahr staging, Clinical Impression of Severity Index, and Patient-Based Global Impression of Severity scale. CONCLUSION: The results suggest that SLS-6 is an easy, feasible, acceptable, consistent, precise and valid measure to evaluate satisfaction with life in PD patients.
INTRODUCTION: To explore the psychometric attributes of a new Satisfaction with Life Scale (SLS-6) in a wide Spanish-speaking population with Parkinson's disease (PD). METHODS: This was an international, cross-sectional study. Several rater-based and patient-reported outcomes measures for evaluation of PD (e.g., Scales for Outcomes in Parkinson's Disease-Motor) and other constructs (e.g., Duke-UNC Functional Social Support Questionnaire, Scale for Living with Chronic Illness) were applied together with the SLS-6. Acceptability, scaling assumptions, reliability, precision, and construct validity were tested. RESULTS: The study included 324 patients from five countries, with age (mean ± standard deviation) 66.67 ± 10.68 years. None of the SLS-6 items had missing values and all acceptability parameters fulfilled the standard criteria. Scaling assumptions allowed the calculation of a summary index from items 2 to 6, complementary to the global evaluation (item 1). For these five items, Cronbach's alpha was 0.85; the corrected item-total correlation 0.53-0.73; inter-item correlation, 0.45-0.70, with an item homogeneity index of 0.55. The standard error of measurement, based on Cronbach's alpha for a single observation, was 3.48. SLS-6 correlations were moderate to strong (rs ≥ 0.35) with the patient-reported outcomes and weak to moderate with the rater-based assessments used in the study. The SLS-6 total score was significantly different according to PD severity levels established according to Hoehn and Yahr staging, Clinical Impression of Severity Index, and Patient-Based Global Impression of Severity scale. CONCLUSION: The results suggest that SLS-6 is an easy, feasible, acceptable, consistent, precise and valid measure to evaluate satisfaction with life in PDpatients.
Authors: Álvaro Sánchez-Ferro; Michele Matarazzo; Pablo Martínez-Martín; Jose Carlos Martínez-Ávila; Agustín Gómez de la Cámara; Luca Giancardo; Teresa Arroyo Gallego; Paloma Montero; Verónica Puertas-Martín; Ignacio Obeso; Ian Butterworth; Carlos S Mendoza; Maria José Catalán; José Antonio Molina; Félix Bermejo-Pareja; Juan Carlos Martínez-Castrillo; Lydia López-Manzanares; Araceli Alonso-Cánovas; Jaime Herreros Rodríguez; Martha Gray Journal: Mov Disord Clin Pract Date: 2018-06-26
Authors: K Ray Chaudhuri; Anette Schrag; Daniel Weintraub; Alexandra Rizos; Carmen Rodriguez-Blazquez; Eugenia Mamikonyan; Pablo Martinez-Martin Journal: Mov Disord Date: 2019-09-30 Impact factor: 10.338
Authors: Leire Ambrosio; David Perez-Manchon; Gloria Carvajal-Carrascal; Alejandra Fuentes-Ramirez; Neus Caparros; Manuel Ignacio Ruiz de Ocenda; Eva Timonet; Maria Victoria Navarta-Sanchez; Carmen Rodriguez-Blazquez Journal: Int J Environ Res Public Health Date: 2021-01-12 Impact factor: 3.390
Authors: Carmen Rodriguez-Blazquez; Maria João Forjaz; Alba Ayala; Mari Carmen Portillo; Leire Ambrosio Journal: Health Expect Date: 2021-09-07 Impact factor: 3.377
Authors: Leire Ambrosio; Mari Carmen Portillo; Carmen Rodríguez-Blázquez; Mayela Rodriguez-Violante; Juan Carlos Martínez Castrillo; Víctor Campos Arillo; Nélida Susana Garretto; Tomoko Arakaki; Marcos Serrano Dueñas; Mario Álvarez; Ivonne Pedroso Ibáñez; Ana Carvajal; Pablo Martínez-Martín Journal: NPJ Parkinsons Dis Date: 2016-10-20