Addressing the bias problem in the assessment of the quality of life of patients with dementia: Determinants of the accuracy and precision of the proxy ratings

We aimed to examine the discrepancy between patients and caregivers’ ratings of quality of life in terms of accuracy and precision, and identify factors associated with it, in order to facilitate the use of this scale as dementia progresses. Cross-sectional analytic study. Day care centres. Participants: Community-living patients with Alzheimer’s disease in early or moderate stage and their principal caregivers. Participants rated patients’...