Rasch analysis of the living with chronic illness scale in Parkinson’s disease
Leire Ambrosio; Carmen Rodríguez‐Blázquez; Alba Ayala; Maria João Forjaz; Mark Wilson
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...
Leire Ambrosio, Carmen Rodríguez‐Blázquez, Alba Ayala, Maria João Forjaz, & Mark Wilson (2020). Rasch analysis of the living with chronic illness scale in Parkinson’s disease. BMC Neurology, 20(1), 346-346. https://doi.org/10.1186/s12883-020-01926-7