Abstract
Currently, measures of quality of life used with older people with dementia (PWD) are mainly health related. Health is not an actual attribute of but a means to attain quality of life. The Investigating Choice Experiments for the Preferences of Older People - CAPability index (ICECAP-O) measures attributes of quality of life. While its construct validity has been tested with PWD, no study has yet published data on the reliability of this scale used directly with PWD. In this study, we tested the external (test-retest) reliability of the ICECAP-O with 54 community-dwelling older PWD from the south of England. The ICECAP-O had acceptable test-retest reliability (r = .68, p < .01 and r = .56, p < .01 for raw and tariff scores, respectively). This suggests that the ICECAP-O is both a reliable and valid measure of quality of life for use directly with community-dwelling PWD.
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