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Open Access 01-12-2019 | Dyslipidemia | Research

The association of vascular disorders with incident dementia in different age groups

Authors: Nienke Legdeur, Sven J. van der Lee, Marcel de Wilde, Johan van der Lei, Majon Muller, Andrea B. Maier, Pieter Jelle Visser

Published in: Alzheimer's Research & Therapy | Issue 1/2019

Abstract

Background

There is increasing evidence that dementia risk associated with vascular disorders is age dependent. Large population-based studies of incident dementia are necessary to further elucidate this effect. Therefore, the aim of the present study was to determine the association of vascular disorders with incident dementia in different age groups in a large primary care database.

Methods

We included 442,428 individuals without dementia aged ≥ 65 years from the longitudinal primary care Integrated Primary Care Information (IPCI) database. We determined in 6 age groups (from 65–70 to ≥ 90 years) the risk of hypertension, diabetes mellitus, dyslipidemia, stroke, myocardial infarction, heart failure, and atrial fibrillation for all-cause dementia using incidence rate ratios, Cox regression, and Fine and Gray regression models.

Results

The mean age at inclusion of the total study sample was 72.4 years, 45.7% of the participants were male, and median follow-up was 3.6 years. During 1.4 million person-years of follow-up, 13,511 individuals were diagnosed with dementia. The risk for dementia decreased with increasing age for all risk factors and was no longer significant in individuals aged ≥ 90 years. Adjusting for mortality as a competing risk did not change the results.

Conclusions

We conclude that vascular disorders are no longer a risk factor for dementia at high age. Possible explanations include selective survival of individuals who are less susceptible to the negative consequences of vascular disorders and differences in follow-up time between individuals with and without a vascular disorder. Future research should focus on the identification of other risk factors than vascular disorders, for example, genetic or inflammatory processes, that can potentially explain the strong age-related increase in dementia risk.

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Title: The association of vascular disorders with incident dementia in different age groups
Authors: Nienke Legdeur
Sven J. van der Lee
Marcel de Wilde
Johan van der Lei
Majon Muller
Andrea B. Maier
Pieter Jelle Visser
Publication date: 01-12-2019
Publisher: BioMed Central
Keywords: Dyslipidemia
Care
Dementia
Dementia
Diabetes
Published in: Alzheimer's Research & Therapy / Issue 1/2019
Electronic ISSN: 1758-9193
DOI: https://doi.org/10.1186/s13195-019-0496-x

Keynote webinar | Spotlight on medication adherence

Springer Medicine

The association of vascular disorders with incident dementia in different age groups

Abstract

Background

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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