Bibliographic Details
| Title: |
Development of a new measure of health-related quality of life for people with dementia: DEMQOL. |
| Authors: |
Smith SC (AUTHOR), Lamping DL (AUTHOR), Banerjee S (AUTHOR), Harwood RH (AUTHOR), Foley B (AUTHOR), Smith P (AUTHOR), Cook JC (AUTHOR), Murray J (AUTHOR), Prince M (AUTHOR), Levin E (AUTHOR), Mann A (AUTHOR), Knapp M (AUTHOR) |
| Source: |
Psychological Medicine. May2007, Vol. 37 Issue 5, p737-746. 10p. |
| Abstract: |
BACKGROUND: We identified the need to develop a scientifically rigorous measure of health-related quality of life (HRQL) in dementia that would be appropriate for use at all stages of dementia severity and would be available in both self- and proxy-report versions. METHOD: We used standard psychometric methods to eliminate items with poor psychometric properties (item-reduction field test) and to assess the acceptability, reliability and validity of the item-reduced instruments (psychometric evaluation field test). We developed and validated two versions of DEMQOL: a 28-item interviewer-administered questionnaire that is self-reported by the person with dementia (DEMQOL) and a 31-item interviewer-administered questionnaire that is proxy-reported by a caregiver (DEMQOL-Proxy). RESULTS: DEMQOL shows high reliability (internal consistency and test-retest) and moderate validity in people with mild/moderate dementia. DEMQOL-Proxy shows good acceptability and internal consistency and moderate evidence of validity in people with mild/moderate and severe dementia. Test-retest reliability and performance in people with severe dementia need further testing. CONCLUSIONS: DEMQOL and DEMQOL-Proxy show psychometric properties that are comparable with the best available dementia-specific measures of HRQL. We recommend that DEMQOL and DEMQOL-Proxy are used together. Reliability and validity need to be confirmed in independent samples and responsiveness needs to be evaluated. [ABSTRACT FROM AUTHOR] |
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| Database: |
Psychology and Behavioral Sciences Collection |
