Rasch Measurement Theory's contribution to the psychometric properties of a co-created measure of health and wellness for Indigenous children and youth.

Autor: Barbic SP; Department of Occupational Science and Occupational Therapy, Faculty of Medicine, University of British Columbia (UBC), Vancouver, British Columbia, Canada V6T 2A1; Centre for Health Evaluation and Outcome Sciences, Vancouver, British Columbia, Canada V6Z 1Y6; Foundry, Vancouver, British Columbia, Canada V6Z 2A9. Electronic address: Skye.barbic@ubc.ca., Young NL; Evaluating Children's Health Outcomes (ECHO) Research Centre, Laurentian Univeristy, Sudbury, ON P3E 2C6, USA., Usuba K; Evaluating Children's Health Outcomes (ECHO) Research Centre, Laurentian Univeristy, Sudbury, ON P3E 2C6, USA., Stankiewicz E; Evaluating Children's Health Outcomes (ECHO) Research Centre, Laurentian Univeristy, Sudbury, ON P3E 2C6, USA.
Jazyk: angličtina
Zdroj: Journal of clinical epidemiology [J Clin Epidemiol] 2022 Nov; Vol. 151, pp. 18-28. Date of Electronic Publication: 2022 Aug 02.
DOI: 10.1016/j.jclinepi.2022.07.010
Abstrakt: Objectives: To determine how Rasch Measurement Theory (RMT) methods can be used to assess the psychometric properties of the Aaniish Naa Gegii: the Children's Health and Wellbeing Measure (ACHWM) and Qanuippit.
Study Design and Setting: Indigenous children aged 8-18 years, from five communities, completed the 62-item ACHWM. We applied RMT methods to ACHWM data from 401 children (mean age 13.4 ± 3.4 years; 51% male) from across Ontario to examine how well the items captured the full range (±3 logit) of the concept of interest in each domain, targeted the needs of Indigenous children, and met the criteria for unidimensional and invariant measurement.
Results: RMT results indicated moderate-fit overall fit (raw χ 2  = 809, P < 0.001). This model was further improved by aggregating the five response categories into three categories. All four domains showed excellent overall fit to the Rasch model (P > 0.05), with items covering between -4.51 and 6.02 logit, with no gaps along the theoretical continua.
Conclusion: This study provides evidence that a set of conceptually derived items was able to produce a measure that fits the Rasch model. These results aid our understanding of wellness by establishing the clinical meaning of the scale scores.
(Copyright © 2022 The Author(s). Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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