Rasch analysis of the living with chronic illness scale in Parkinson’s disease

Autor: Leire Ambrosio, Carmen Rodriguez-Blazquez, Alba Ayala, Maria João Forjaz
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: BMC Neurology, Vol 20, Iss 1, Pp 1-7 (2020)
Druh dokumentu: article
ISSN: 1471-2377
DOI: 10.1186/s12883-020-01926-7
Popis: Abstract Background Neurologists play an essential role in facilitating the patient’s process of living with Parkinson’s disease (PD). The Living with Chronic Illness Scale-PD (LW-CI-PD) is a unique available clinical tool that evaluates how the patient is living with PD. The objective of the study was to analyse the LW-CI-PD properties according to the Rasch model. Methods An open, international, cross-sectional study was carried out in 324 patients with Parkinson’s disease from four Latin American countries and Spain. Psychometric properties of the LW-CI-PD were tested using Rasch analysis: fit to the Rasch model, item local independency, unidimensionality, reliability, and differential item functioning by age and gender. Results Original LW-CI-PD do not fit Rasch model. Modifications emerged included simplifying the response scale and deleting misfit items, the dimensions Acceptance, Coping and Integration showed a satisfactory fit to the Rasch model, with reliability indices greater than 0.70. The dimensions Self-management and Adjustment to the disease did not reach fit to the Rasch model. Conclusion Suggestions for improving the LW-CI-PD include a multidimensional and shorter scale with 12 items grouped in three subscales with a simpler response scheme. The final LW-CI-PD Scale version is a reliable scale, with good internal construct validity, that provides Rasch transformed results on linear metric scale.
Databáze: Directory of Open Access Journals
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