Aims

1. To create a publicly accessible data archive from the 10/66 Dementia Research Group's cross-sectional population-based surveys
2. To use these data for comparative descriptive analyses of dementia prevalence, and its associated impact including
   1. the economic costs of illness in each centre comprising indirect (informal care) costs, lost earnings and direct costs (health and social care and medication).
   2. the relative independent contribution of dementia and other major non-communicable disorders to direct and indirect costs, disability, dependency and caregiver strain.
3. To model dementia prevalence, examining the effects of age, education, literacy and SES, and at population level of urban vs. rural setting, historical levels of infant mortality, economic development, and industrialization.
4. To study the social aetiology of late-life depression cross-sectionally in all ten centres, including the effects of relative and absolute poverty, ill health and disability, nutritional status, social support, life events, marital circumstances and living arrangements.