Newly Diagnosed Dementia and Increased Risk of Hemorrhagic Stroke: A Nationwide Population-based Study

ISSN: 1875-5828 (Online)
ISSN: 1567-2050 (Print)

Volume 12, 10 Issues, 2015

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Current Alzheimer Research

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Prof. Debomoy K. Lahiri
Department of Psychiatry, Indiana University School of Medicine
Neuroscience Research Center
Indianapolis, IN 46202

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Newly Diagnosed Dementia and Increased Risk of Hemorrhagic Stroke: A Nationwide Population-based Study

Current Alzheimer Research, 11(3): 291-298.

Author(s): Hao-Kuang Wang, Kuen-Jer Tsai, Chih-Yuan Huang, Liang-Chao Wang, Kang Lu, Han-Jung Chen, Chi-Wei Lin, Yi-Jer Lee, Pei-Hsuan Fang, Li-Ching Chang and Ying-Chun Li.

Affiliation: Institute of Health Care Management, National Sun Yat-Sen University, Kaohsiung, Taiwan.


Background: This retrospective cohort study was designed to assess whether there is an association between newly diagnosed dementia and the risk of stroke. Methods: From Taiwan’s National Health Insurance Research Database of reimbursement claims, we identified 2811 patients with newly diagnosed dementia and 14,055 randomly selected, agematched patients without dementia. A Cox proportional hazards model was constructed to calculate the development of stroke, including ischemic stroke, and intracerebral, or subarachnoid hemorrhage. Results: During the 3-year follow-up period, 339 patients with dementia (12.06%) and 691 patients without dementia (4.92%) developed stroke. The adjusted HRs of developing stroke among newly diagnosed dementia patients were 2.33-times (range, 2.05–2.66), and the incidence of hemorrhagic stroke was higher than that of other stroke types. Patients who had Alzheimer’s disease were at the highest risk of hemorrhagic stroke. Conclusion: Individuals with dementia, especially Alzheimer’s disease, are at greater risk of developing stroke, especially in intracerebral and subarachnoid hemorrhage than patients without dementia. Early mental screening programs and health education should be initiated for dementia patients.


Dementia, epidemiology, neurodegeneration, stroke.

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Article Details

Volume: 11
Issue Number: 3
First Page: 291
Last Page: 298
Page Count: 8
DOI: 10.2174/1567205011666140131120351

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