Evidence for the external validity of the Consumer Choice Index Six Dimension (CCI-6D) for people living in residential aged care with dementia

The large proportion of people living in residential aged care services with dementia necessitates that any instrument used to measure quality of care is meaningful and practical to be completed by this group. This study assessed the external validity of using the Consumer Choice Index Six Dimension (CCI-6D) instrument to assess quality of care in a large sample of people living in residential aged care, including those with dementia. We applied the CCI-6D with 446 residents along with a range of measures of clinical and functional status and a measure of dementia-specific quality of life, the Quality of Life in Alzheimer's Disease (QOL-AD). Resident's cognitive abilities ranged from no evidence of cognitive impairment through to severe dementia. A high proportion of participants reported they felt very at home in their own room (82%, N = 367), while a lower proportion reported they could undertake meaningful activities that made them feel valued often (37%, N = 163). We identified moderate correlations between quality of care and quality of life, as measured through the QOL-AD utility score. Those with moderate dementia were significantly more likely to report poorer quality of care than those with no or mild dementia. This study provides further evidence for the use of the CCI-6D instrument to assess quality of care from the perspective of the individual receiving care even among those with living with dementia. Residents living with moderate dementia reported lower quality of care than those living with mild or without dementia, indicating the risks of poor care quality among this group.