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Measuring the quality of life of family carers of people with dementia: development and validation of C-DEMQOL
PURPOSE: We aimed to address gaps identified in the evidence base and instruments available to measure the quality of life (QOL) of family carers of people with dementia, and develop a new brief, reliable, condition-specific instrument. METHODS: We generated measurable domains and indicators of care...
Autores principales: | , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer International Publishing
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6620239/ https://www.ncbi.nlm.nih.gov/pubmed/31030366 http://dx.doi.org/10.1007/s11136-019-02186-w |
Sumario: | PURPOSE: We aimed to address gaps identified in the evidence base and instruments available to measure the quality of life (QOL) of family carers of people with dementia, and develop a new brief, reliable, condition-specific instrument. METHODS: We generated measurable domains and indicators of carer QOL from systematic literature reviews and qualitative interviews with 32 family carers and 9 support staff, and two focus groups with 6 carers and 5 staff. Statements with five tailored response options, presenting variation on the QOL continuum, were piloted (n = 25), pre-tested (n = 122) and field-tested (n = 300) in individual interviews with family carers from North London and Sussex. The best 30 questions formed the C-DEMQOL questionnaire, which was evaluated for usability, face and construct validity, reliability and convergent/discriminant validity using a range of validation measures. RESULTS: C-DEMQOL was received positively by the carers. Factor analysis confirmed that C-DEMQOL sum scores are reliable in measuring overall QOL (ω = 0.97) and its five subdomains: ‘meeting personal needs’ (ω = 0.95); ‘carer wellbeing’ (ω = 0.91); ‘carer-patient relationship’ (ω = 0.82); ‘confidence in the future’ (ω = 0.90) and ‘feeling supported’ (ω = 0.85). The overall QOL and domain scores show the expected pattern of convergent and discriminant relationships with established measures of carer mental health, activities and dementia severity and symptoms. CONCLUSIONS: The robust psychometric properties support the use of C-DEMQOL in evaluation of overall and domain-specific carer QOL; replications in independent samples and studies of responsiveness would be of value. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s11136-019-02186-w) contains supplementary material, which is available to authorized users. |
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