Measurement properties of all versions of the Stroke Specific Quality of Life Scale (SS-QOL) 2.0

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.

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The measurement properties of the menorrhagia multi-attribute quality-of-life scale: a psychometric analysis

BJOG An International Journal of Obstetrics & Gynaecology ◽

10.1111/j.1471-0528.2011.03057.x ◽

2011 ◽

Vol 118 (12) ◽

pp. 1528-1531 ◽

Cited By ~ 19

Author(s):

H Pattison ◽

JP Daniels ◽

J Kai ◽

JK Gupta

Keyword(s):

Quality Of Life ◽

Measurement Properties ◽

Psychometric Analysis ◽

Quality Of Life Scale ◽

Life Scale ◽

Attribute Quality

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Development and evaluation of the Singapore Caregiver Quality of Life Scale - Dementia

Journal of Patient-Reported Outcomes ◽

10.1186/s41687-020-00252-3 ◽

2020 ◽

Vol 4 (1) ◽

Author(s):

Yin Bun Cheung ◽

Irene Teo ◽

Wee Shiong Lim ◽

Allyn Hum ◽

Shirlyn H. S. Neo ◽

...

Keyword(s):

Quality Of Life ◽

Family Caregivers ◽

Intraclass Correlation ◽

Measurement Properties ◽

Measurement Scale ◽

Quality Of Life Scale ◽

Caregiver Quality ◽

Life Scale ◽

Domain Scores

Abstract Purpose To develop and evaluate a measurement scale for multi-domain assessment of the quality of life of family caregivers of persons with dementia (PWD) in Singapore, a multi-ethic society in South-East Asia where English is the lingua franca. Methods Items from the Singapore Caregiver Quality of Life Scale (SCQOLS), which was originally developed in the context of advanced cancers, were adopted as candidate items. Furthermore, a multi-disciplinary panel reviewed dementia-specific caregiver quality of life scales to identified items not covered in SCQOLS for inclusion as candidate items. A pilot study of 31 family caregivers of PWD was conducted to solicit inputs on candidate items; 102 family caregivers of PWD were surveyed for evaluation of the scale’s measurement properties. Results Factor analysis confirmed a 5-domain structure of the 63 candidate items. The Root Mean Square Error of Approximation was 0.056 and Comparative Fit Index was 0.928. Convergent validity of the total and domain scores was demonstrated in terms of correlation with the Brief Assessment Scale for Caregivers and its sub-scales. The scores also showed an expected pattern of correlation with hours spent on caregiving per week. Known-group validity was demonstrated by differences in mean scores between functional staging groups. Cronbach’s alpha of the total and domain scores ranged from 0.89 to 0.95. Test-retest reliability (intraclass correlation coefficient) ranged from 0.77 to 0.92. Conclusions The Singapore Caregiver Quality of Life Scale – Dementia (SCQOLS-D) is a quality of life measurement scale for family caregivers of persons with dementia that is valid and reliable.

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