Developing a New Generic Health and Wellbeing Measure: Psychometric Survey Results for the EQ-HWB

• Autores: Peasgood, Tessa; Mukuria, Clara; Brazier, John; Marten, Ole; Kreimeier, Simone; Luo, Nan; Mulhern, Brendan; Greiner, Wolfgang; Pickard, A. Simon; Augustovski, Federico Ariel; Engel, Lidia; Gibbons, Luz; Yang, Zhihao; Monteiro, Andrea L.; Kuharic, Maja; Belizan, Maria; Bjørner, Jakob
• Año de publicación: 2022
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: EQ-HWB; HEALTH AND WELLBEING; ITEM RESPONSE THEORY; ITEM SELECTION; MEASUREMENT DEVELOPMENT; PSYCHOMETRICS; QUALITY-ADJUSTED LIFE-YEAR
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

Objectives: The development of measures such as the EQ-HWB (EQ Health and Wellbeing) requires selection of items. This study explored the psychometric performance of candidate items, testing their validity in patients, social carer users, and carers. Methods: Article and online surveys that included candidate items (N = 64) were conducted in Argentina, Australia, China, Germany, United Kingdom, and the United States. Psychometric assessment on missing data, response distributions, and known group differences was undertaken. Dimensionality was explored using exploratory and confirmatory factor analysis. Poorly fitting items were identified using information functions, and the function of each response category was assessed using category characteristic curves from item response theory (IRT) models. Differential item functioning was tested across key subgroups. Results: There were 4879 respondents (Argentina = 508, Australia = 514, China = 497, Germany = 502, United Kingdom = 1955, United States = 903). Where missing data were allowed, it was low (UK article survey 2.3%; US survey 0.6%). Most items had responses distributed across all levels. Most items could discriminate between groups with known health conditions with moderate to large effect sizes. Items were less able to discriminate across carers. Factor analysis found positive and negative measurement factors alongside the constructs of interest. For most of the countries apart from China, the confirmatory factor analysis model had good fit with some minor modifications. IRT indicated that most items had well-functioning response categories but there was some evidence of differential item functioning in many items. Conclusions: Items performed well in classical psychometric testing and IRT. This large 6-country collaboration provided evidence to inform item selection for the EQ-HWB measure.
Fil: Peasgood, Tessa. University Of Sheffield (university Of Sheffield);
Fil: Mukuria, Clara. University Of Sheffield (university Of Sheffield);
Fil: Brazier, John. University Of Sheffield (university Of Sheffield);
Fil: Marten, Ole. Universitat Bielefeld; Alemania
Fil: Kreimeier, Simone. Universitat Bielefeld; Alemania
Fil: Luo, Nan. National University of Singapore; Singapur
Fil: Mulhern, Brendan. University of Technology Sydney; Australia
Fil: Greiner, Wolfgang. Universitat Bielefeld; Alemania
Fil: Pickard, A. Simon. University of Illinois; Estados Unidos
Fil: Augustovski, Federico Ariel. Instituto de Efectividad Clínica y Sanitaria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Epidemiología y Salud Pública. Instituto de Efectividad Clínica y Sanitaria. Centro de Investigaciones en Epidemiología y Salud Pública; Argentina
Fil: Engel, Lidia. Deakin University; Australia
Fil: Gibbons, Luz. Instituto de Efectividad Clínica y Sanitaria; Argentina
Fil: Yang, Zhihao. Guizhou Medical University; China
Fil: Monteiro, Andrea L.. University of Illinois; Estados Unidos
Fil: Kuharic, Maja. University of Illinois; Estados Unidos
Fil: Belizan, Maria. Instituto de Efectividad Clínica y Sanitaria; Argentina
Fil: Bjørner, Jakob. No especifíca;