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Title: Development of a short form of the Singapore Caregiver Quality of Life Scale – Dementia: SCQOLS-D-15
Authors: Lee, Chun Fan 
Seow, Dennis C. C. 
Teo, Irene 
Neo, Shirlyn H. S. 
Yang, Grace M. 
Lee, Geok Ling 
Lim, Wee Shiong
Hum, Allyn
Cheung, Yin Bun 
Keywords: Caregiver
Measurement scale
Quality of life
Short form
Singapore caregiver quality of life scale – dementia
Issue Date: 10-Jul-2021
Publisher: Springer Science and Business Media Deutschland GmbH
Citation: Lee, Chun Fan, Seow, Dennis C. C., Teo, Irene, Neo, Shirlyn H. S., Yang, Grace M., Lee, Geok Ling, Lim, Wee Shiong, Hum, Allyn, Cheung, Yin Bun (2021-07-10). Development of a short form of the Singapore Caregiver Quality of Life Scale – Dementia: SCQOLS-D-15. Journal of Patient-Reported Outcomes 5 (1) : 56. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Purpose: The Singapore Caregiver Quality of Life Scale – Dementia (SCQOLS-D), developed based on the Singapore Caregiver Quality of Life Scale (SCQOLS), comprises 5 domains and 63 items. It has been shown to be a valid and reliable measurement scale. This study aimed to develop and evaluate a short form of the SCQOLS-D. Methods: Data were collected from 102 family caregivers of person with dementia in Singapore. Candidate items were shortlisted by factor analysis, correlation and best subset regression. Shortlisted items with the best measurement properties including correlations with the long form and other established measures, internal consistency and test-retest reliability were identified. Their properties were compared with the corresponding domain scores in the long form of SCQOLS-D and a short form of the SCQOLS. A total score based on the average of the domain scores was also evaluated. Results: A total of fifteen items, two to four items per domain, were selected. The total and domain scores generated from these items strongly correlated with the corresponding score of the long form (correlation coefficients: 0.83–0.97). The short and long forms had comparable correlation coefficients with Negative Personal Impact and Positive Personal Impact measures. The short form showed good internal consistency (Cronbach’s alpha: 0.84–0.92) and test-retest reliability (intra-class correlation coefficient: 0.72–0.93). These 15 items form the SCQOLS-D-15, an abbreviated version of the SCQOLS-D. Conclusion: The SCQOLS-D-15 showed acceptable measurement properties. This serves as an alternative to the SCQOLS-D to provide rapid assessment of the overall and domain-specific quality of life of caregivers of persons with dementia. © 2021, The Author(s).
Source Title: Journal of Patient-Reported Outcomes
ISSN: 2509-8020
DOI: 10.1186/s41687-021-00330-0
Rights: Attribution 4.0 International
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