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Evidence of Concomitantly Increasing Stroke and Dementia Prevalence among those 80 Years and Older in Ontario, Canada, 2003-04 to 2012-13

  • Joshua O. Cerasuolo (a1) (a2), Mahmoud Reza Azarpazhooh (a1) (a2) (a3), Moira K. Kapral (a4) (a5), Lauren E. Cipriano (a2) (a6) and Vladimir Hachinski (a1) (a2)...

Abstract

Among those aged 80 years and older in Ontario, Canada, stroke and dementia incidence declined concomitantly from 2002-03 to 2013-14. This study aimed to report the concurrent temporal trends of stroke and dementia prevalence in Ontario among the same age demographic. The prevalence of both stroke and dementia increased from 2003-04 to 2012-13 in both sexes and the magnitude in which prevalence of dementia increased over time exceeded that of stroke. The substantial increase in the prevalence of dementia may be because of increased recognition and diagnoses of dementia and increased survival of stroke patients who are at higher risk of developing dementia.

Des preuves quant à une augmentation simultanée de la prévalence des AVC et de la démence. De 2002-2003 à 2013-2014, on a noté une diminution simultanée de l’incidence des AVC et de la démence parmi les individus âgés de plus de 80 ans vivant en Ontario (Canada). Ce qui nous intéresse dans cette étude, ce sont les tendances temporelles simultanées en ce qui a trait à la prévalence des AVC et de la démence au sein de la même tranche d’âge et dans la même province. On a ainsi noté que tant la prévalence des AVC que celle de la démence ont augmenté entre 2003–2004 et 2012–2013, et ce, tant chez les hommes que chez les femmes. Cela dit, l’ampleur de l’augmentation de la prévalence de la démence a fini par dépasser au fil du temps celle des AVC. Il se pourrait que l’augmentation substantielle de la prévalence des cas de démence puisse être attribuée à un dépistage accru et à l’établissement de plus nombreux diagnostics ainsi qu’à un accroissement de la survie des patients victimes d’AVC, ces derniers étant alors plus susceptibles d’être atteints de démence.

Copyright

Corresponding author

Correspondence to: Vladimir Hachinski, Department of Clinical Neurological Sciences, London Health Sciences Centre, University Hospital, 339 Windermere Road, London, ON, Canada N6A 5A5. Email: vladimir.hachinski@lhsc.on.ca

References

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