School of Medicine Publications and Presentations
Document Type
Article
Publication Date
2-1-2016
Abstract
Objective: Type 2 diabetes confers a greater excess risk of cardiovascular disease in women than in men. Diabetes is also a risk factor for dementia, but whether the association is similar in women and men remains unknown. We performed a meta-analysis of unpublished data to estimate the sex-specific relationship between women and men with diabetes with incident dementia.
Research design and methods: A systematic search identified studies published prior to November 2014 that had reported on the prospective association between diabetes and dementia. Study authors contributed unpublished sex-specific relative risks (RRs) and 95% CIs on the association between diabetes and all dementia and its subtypes. Sex-specific RRs and the women-to-men ratio of RRs (RRRs) were pooled using random-effects meta-analyses.
Results: Study-level data from 14 studies, 2,310,330 individuals, and 102,174 dementia case patients were included. In multiple-adjusted analyses, diabetes was associated with a 60% increased risk of any dementia in both sexes (women: pooled RR 1.62 [95% CI 1.45-1.80]; men: pooled RR 1.58 [95% CI 1.38-1.81]). The diabetes-associated RRs for vascular dementia were 2.34 (95% CI 1.86-2.94) in women and 1.73 (95% CI 1.61-1.85) in men, and for nonvascular dementia, the RRs were 1.53 (95% CI 1.35-1.73) in women and 1.49 (95% CI 1.31-1.69) in men. Overall, women with diabetes had a 19% greater risk for the development of vascular dementia than men (multiple-adjusted RRR 1.19 [95% CI 1.08-1.30]; P < 0.001).
Conclusions: Individuals with type 2 diabetes are at ∼60% greater risk for the development of dementia compared with those without diabetes. For vascular dementia, but not for nonvascular dementia, the additional risk is greater in women.
Recommended Citation
Saion Chatterjee, Sanne A.E. Peters, Mark Woodward, Silvia Mejia Arango, G. David Batty, Nigel Beckett, Alexa Beiser, Amy R. Borenstein, Paul K. Crane, Mary Haan, Linda B. Hassing, Kathleen M. Hayden, Yutaka Kiyohara, Eric B. Larson, Chung-Yi Li, Toshiharu Ninomiya, Tomoyuki Ohara, Ruth Peters, Tom C. Russ, Sudha Seshadri, Bjørn H. Strand, Rod Walker, Weili Xu, Rachel R. Huxley; Type 2 Diabetes as a Risk Factor for Dementia in Women Compared With Men: A Pooled Analysis of 2.3 Million People Comprising More Than 100,000 Cases of Dementia. Diabetes Care 1 February 2016; 39 (2): 300–307. https://doi.org/10.2337/dc15-1588
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
First Page
300
Last Page
7
Publication Title
Diabetes care
DOI
10.2337/dc15-1588
Academic Level
faculty
Mentor/PI Department
Neuroscience
Comments
This is an open access article distributed under the terms of the Creative Commons CC BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.