Severity of Dementia, Anosognosia, and Depression in Relation to the Quality of Life of Patients With Alzheimer Disease: Discrepancies Between Patients and Caregivers

Objective: To investigate the factors associated with discrepancies between patient and caregiver reports of the quality of life of patients (QoLp) with Alzheimer¿s disease (AD). Methods: Cross-sectional analytic study of 141 patients and their caregivers. The instruments used were the Quality of Life in AD (QoL-AD), the Global Deterioration Scale (GDS), the Geriatric Depression Scale (GDS-d) and the Anosognosia Questionnaire¿Dementia (AQ-D). Differences were analyzed according to GDS stage. A linear regression analysis was conducted using the difference between the absolute QoLp scores of patients and caregivers. A cluster analysis involving the patient variables was then performed. Results: The discrepancy between patient and caregiver QoLp ratings increased in line with GDS stages (χ2 (2) = 8.7, p = 0.013). In the regression model (F [7,133] = 16.6, p