Determinants of Quality of Life Related to Health in Alzheimer Disease

Study the factors that explain Health-Related Quality of Life (HRQL) in patients with Alzheimer disease including: * The influence of the environment (physical and human) on Health-Related Quality of Life (HRQL), * The influence of non-drug and drug treatments on Health-Related Quality of Life (HRQL), * The influence of formal and informal help mobilized, * The influence of interactions "patient - caregiver" on Health-Related Quality of Life (HRQL), * The influence of the ratio necessary cost on available resources on Health-Related Quality of Life (HRQL)