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Background: Alzheimer’s disease (AD) is a significant burden on patients and caregivers. How this burden increases as disease progresses has not been well researched. Objective: To assess the association of caregiver burden and quality of life with Alzheimer’s disease severity and disease progression in community-dwelling patients in Germany, Spain, and the UK. Methods: This was a prospective observational longitudinal study of mild-to-moderate AD patients (assessed by Mini-Mental State Examination, MMSE), and their caregivers. The humanistic burden was assessed using these instruments: [Rapid Assessment of Physical Activity (RAPA), EuroQoL-5-Dimension Level (EQ-5D-5L)] and caregiver-reported [Dependence Scale (DS), EQ-5D-5L, Zarit Burden Interview (ZBI)]. Caregiver-reported healthcare resource use was assessed using the Resource Use in Dementia (RUD) and ad-hoc questions. Results: Of 616 patients recruited, 338 and 99 were followed-up at 12 and 18 months, respectively. The caregiver-reported EQ-5D-5L scores of patients’ health-related quality of life (HRQoL) showed a negative trend over time (baseline: 0.76; 18 months: 0.67) while patient-reported HRQoL remained at 0.85. DS scores tended to worsen. Disease progression was an independent predictor of HRQoL and increased dependence. Mean ZBI score increased over time reflecting an increase in caregiver burden; MMSE being an independent predictor for caregiver burden. Patient resource utilization and caregiver time for caregiving tended to increase over time. Conclusion: We found significant association between disease progression and caregiver and patient burden. Independently, both disease-specific outcomes and disease burden measures increased over time, but as disease progresses, we also found incremental burden associated with it.

Quality of Life and Caregiver Burden of Alzheimer’s Disease Among Community Dwelling Patients in Europe: Variation by Disease Severity and Progression