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KMID : 0869220170210020081
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Journal of Korean Geriatric Psychiatry
2017 Volume.21 No. 2 p.81 ~ p.86
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Factor Structure of Burden in Dementia Caregivers : Exploratory Factor Analysis and Confirmatory Factor Analysis of Zarit Burden Interview
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Kang Hyo-Shin
Lee Soo-Ji
Kim Ji-Hae
Kwon Jung-Hye
Kim Doh-Kwan
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Abstract
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Objective：Zarit Burden Interview (ZBI) was the most commonly used measure of caregiver burden for demented older adults. The aim of this study was to investigate dimensions of caregiver burden through factor analysis of ZBI.
Methods：The participants were 706 outpatients with dementia and their caregivers in Korea. We assessed the caregiver burden using the Korean version of ZBI. The participants were randomly divided into two groups, for the purpose of identifying the most optimal factor structure through exploratory factor analysis in group 1 (n=368) and confirmatory factor analysis in group 2 (n=338).
Results：The results of exploratory factor analysis in group 1 suggested 3-factor structure, which was labeled ‘personal strain,’ ‘patient dependency,’ and ‘self-criticism.’ The confirmatory factor analysis results indicated the 3-factor structure which was discovered through exploratory factor analysis was the best-fitting model for explaining the caregiver burden in group 2.
Conclusion：The current study has significant implications for advancing our understanding of ZBI as multidimensional burden scale. Furthermore, differentiating the dimensions may allow researchers to assess the effects of interventions more precisely.
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KEYWORD
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Caregiver burden, Dementia, Factor structure, Zarit Burden Interview
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