Cross-Cultural Validation of the Scales for Outcomes in Parkinson's Disease-Psychosocial Questionnaire (SCOPA-PS) in Four Latin American Countries

Autor: Francisco Javier Carod-Artal, Javier Virués-Ortega, Federico Micheli, Carolina Velázquez, Gloria Meza-Rojas, Marcos Serrano-Dueñas, Pablo Martinez-Martin, Gabriela Ruiz-Galeano
Jazyk: angličtina
Předmět:
Zdroj: Value in Health. (2):385-391
ISSN: 1098-3015
DOI: 10.1111/j.1524-4733.2008.00436.x
Popis: Objective: To conduct a cross-national validation of the Scales for Outcomes in Parkinson’s Disease-PsychoSocial questionnaire (SCOPA-PS) in four Latin American Countries. Methods: Data quality (missing items), scale assumptions (item–test correlation), internal consistency (Cronbach’s alpha, item homogeneity), factor structure, content validity, and precision (standard error of measurement, SEM) of the scale were explored, as was convergent validity with motor symptoms (Clinical Impression of Severity Index [CISI-PD], Scales for Outcomes in Parkinson’s Disease-Motor Scale), emotional status (Hospital Anxiety and Depression Scale) and health-related quality of life (Parkinson Disease Questionnaire-39). Known-groups validity was studied by category of severity, based on Hoehn and Yahr staging (HY), CISI-PD, and disease duration. Results: Three hundred thirty-one Parkinson’s disease (PD) patients with usable data participated (mean age 64.7 years; 42.3% female; mean PD duration 8.5 years; HY, 1 to 5). Data quality (missing items
Databáze: OpenAIRE