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. 2020 Jun;33(1):18-24.
doi: 10.1177/1569186120930300. Epub 2020 Jun 24.

The study of the validity and reliability of the Occupational Self-Assessment-traditional Chinese version

Ay-Woan Pan  1   2 , LyInn Chung  3 , Tsyr-Jang Chen  4 , Ping-Chuan Hsiung  5
Affiliations

The study of the validity and reliability of the Occupational Self-Assessment-traditional Chinese version

Ay-Woan Pan et al. Hong Kong J Occup Ther. 2020 Jun.

Abstract

Introduction: Health professionals who work in mental healthcare settings need to use standardised, objective instruments; however, it is also extremely important that they maintain a client-focused perspective. The purpose of this study was to investigate the validity and reliability of the 'Traditional Chinese version of the Occupational Self-Assessment' (TC-OSA).

Methods: A total of 593 participants with mental illnesses participated in the study. The data were analysed using confirmatory factor analysis as well as the Rasch measurement model.

Results: The results of our analysis revealed that the TC-OSA encompasses four domains: self-performance (11 items), self-habituation (5 items), self-volition (5 items) and environment (8 items). Most of the items within each domain were found to have a good fit with the Rasch measurement model, whereas the CFA index was found to have a good fit for only three of the domains, the one exception being the environment domain.

Conclusions: We suggest applying the scale in clinical practice to identify the priority of intervention and as a measure for changes in outcomes. Further development and refinement of the environmental domain is guaranteed.

Keywords: Assessment; Rasch analysis; client centre; confirmatory factor analysis; model of human occupation.

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