Mapping prevalence of dementia in England

The calculation of dementia or assignment of dementia status follows the Langa-Weir approach as applied to the sister study to the English Longitudinal Study of Ageing, namely the US Health and Retirement Study. This way, both studies are likely to give comparable results.

A cartogram map is the equivalent of a choropleth map with the size of the areas (local authority districts) adjusted according to the prevalence of dementia. In this way, areas with higher prevalence are not only darker but also increased in size. Conversely, areas with lower prevalence are shrunk in size. The legend identifies three ranges: up to 5%, up to 10% and up to 15%.

Choropleth mapping dementia prevalence in England
Choropleth mapping dementia prevalence in England
Cartogram mapping dementia prevalence in England
Cartogram mapping dementia prevalence in England

Progress with publications from WP2

This is an update on outputs from the work package 2 team. We have submitted two papers to peer reviewed journals.

The first is ‘Trajectories of general cognition and dementia in English older population ‘, submitted to the European Journal of Medicine and currently under revision.

The second is ‘Britons: latent class trajectories of cognitive scores in ELSA 2002-2013 ’, submitted to the International Journal of Geriatric Psychiatry.

We are currently working on a third which will discuss the environmental effects on dementia prevalence in England 2014-2015