The World Health Organization estimated that in 2005, 0.379% of people worldwide had dementia, and that the prevalence would increase to 0.441% in 2015 and to 0.556% in 2030.
WHO har skønnet at i 2005 led 0,379% af befolkningen på verdensplan af demens, og at prævalensen ville stige til 0,441% i 2015 og videre til 0,556% i 2030.