Dementia is one of the top 10 leading causes of death in Hong Kong. In 2009, it was estimated that over 100,000 older adults aged 60 and over were having dementia and this number was expected to triple in two decades. At the same time, dementia is associated with high prevalence of some other significant non-communicable diseases, such as hypertension, diabetes mellitus, heart disease, stroke, hearing loss, obesity, and depression. Yet, the Government has not been monitoring the prevalence of dementia regularly. The latest population-based study on dementia prevalence was conducted in 2005 – 2006.