Development of a short form of the Singapore Caregiver Quality of Life Scale – Dementia: SCQOLS-D-15

Chun Fan Lee, Dennis C.C. Seow, Irene Teo, Shirlyn H.S. Neo, Grace M. Yang, Geok Ling Lee, Wee Shiong Lim, Allyn Hum, Yin Bun Cheung

    Research output: Contribution to journalArticleScientificpeer-review

    2 Downloads (Pure)


    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.

    Original languageEnglish
    Article number56
    JournalJournal of Patient-Reported Outcomes
    Publication statusPublished - Jul 2021
    Publication typeA1 Journal article-refereed


    • Caregiver
    • Dementia
    • Measurement scale
    • Quality of life
    • Short form
    • Singapore caregiver quality of life scale – dementia

    Publication forum classification

    • Publication forum level 1

    ASJC Scopus subject areas

    • Health Informatics
    • Health Information Management


    Dive into the research topics of 'Development of a short form of the Singapore Caregiver Quality of Life Scale – Dementia: SCQOLS-D-15'. Together they form a unique fingerprint.

    Cite this