The worldwide societal costs of dementia: Estimates for 2009

The purpose of this study was to update the previous estimate of the worldwide cost of dementia in 2005 to 2009.

The cost model is based on prevalence estimates, country and region-specific data on Gross Domestic Product per person and average wage, with results from previously published cost-of-illness studies in different countries. Prevalence figures are updated to 2009 and costs were adjusted to 2009 constant US dollars ($).