The HK-MAPS sampled a total of 6,100 people aged 60 years or older who were randomly selected from a non-institutionalized population in Hong Kong and screened for dementia. Of the 931 participants who completed the assessment, 144 had a diagnosis of dementia. The remaining 787 participants comprised the sample for this study. The participants were assessed at baseline (T0), at two years (T1), and at five years (T2). The baseline assessment was conducted from October 2005 to July 2006, the first follow-up from August 2007 to June 2008, and the second follow-up from March 2011 to February 2012.