Chun Fan Lee1, Dennis C C Seow2, Irene Teo3,4, Shirlyn H S Neo3,4, Grace M Yang3,4,5, Geok Ling Lee6, Wee Shiong Lim7, Allyn Hum7,8, Yin Bun Cheung9,10,11. 1. Centre for Quantitative Medicine, Duke-NUS Medical School, Level 6, Academia, 20 College Road, Singapore, 169856, Singapore. chunfan.lee@duke-nus.edu.sg. 2. Department of Geriatric Medicine, Singapore General Hospital, Singapore, Singapore. 3. Lien Centre for Palliative Care, Duke-NUS Medical School, Singapore, Singapore. 4. Division of Supportive and Palliative Care, National Cancer Centre, Singapore, Singapore. 5. Department of General Medicine, Sengkang General Hospital, Singapore, Singapore. 6. Department of Social Work, Faculty of Arts and Social Sciences, National University of Singapore, Singapore, Singapore. 7. Department of Geriatric Medicine, Institute of Geriatrics and Active Aging, Tan Tock Seng Hospital, Singapore, Singapore. 8. Department of Palliative Medicine, Tan Tock Seng Hospital, Singapore, Singapore. 9. Centre for Quantitative Medicine, Duke-NUS Medical School, Level 6, Academia, 20 College Road, Singapore, 169856, Singapore. 10. Center for Child Health Research, Tampere University, Tampere, Finland. 11. Program in Health Services & Systems Research, Duke-NUS Medical School, Singapore, Singapore.
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.
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.
Authors: Geok Ling Lee; Mandy Yen Ling Ow; Ramaswamy Akhileswaran; Grace Su Yin Pang; Gilbert Kam Tong Fan; Brandon Huat Heng Goh; Cai Fong Wong; Yin Bun Cheung; Hwee Lin Wee Journal: Qual Life Res Date: 2014-10-25 Impact factor: 4.147
Authors: Yin Bun Cheung; Shirlyn H S Neo; Grace M Yang; Geok Ling Lee; Irene Teo; Audrey R X Koh; Julian Thumboo; Hwee Lin Wee Journal: J Clin Epidemiol Date: 2020-02-22 Impact factor: 6.437
Authors: Linda Høgsnes; Christina Melin-Johansson; Karl Gustaf Norbergh; Ella Danielson Journal: Aging Ment Health Date: 2013-07-22 Impact factor: 3.658
Authors: Yin Bun Cheung; Shirlyn H S Neo; Irene Teo; Grace M Yang; Geok Ling Lee; Julian Thumboo; John W K Chia; Audrey R X Koh; Debra L M Qu; William W L Che; Annie Lau; Hwee Lin Wee Journal: Health Qual Life Outcomes Date: 2019-02-14 Impact factor: 3.186