Original Research Article
Risk Factors for Alzheimer Dementia in a Community-Based Birth Cohort at the Age of 75 YearsFischer P.a, c · Zehetmayer S.h · Jungwirth S.a · Weissgram S.a · Krampla W.b · Hinterberger M.a · Torma S.a, d · Rainer M.a, c · Huber K.g · Hoenigschnabl S.e · Gelpi E.i · Bauer K.g · Leitha T.f · Bauer P.h · Tragl K.-H.a
aLudwig Boltzmann Institute of Aging Research, bLudwig Boltzmann Institute of Digital Radiology and Interventional Radiology, Departments of cPsychiatry, dNeurology, ePathology and fDiagnostic and Therapeutic Nuclear Medicine and gInstitute of Laboratory Medicine, Danube Hospital, and hSection for Medical Statistics and iInstitute of Neurology, Medical University Vienna, Vienna, Austria
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Background: Few prospective community-based cohort studies have so far concentrated specifically on the risk factors for Alzheimer dementia (AD) with onset after the age of 75 years. Methods: We prospectively investigated a birth cohort of 585 nondemented inhabitants in the area on the East bank of the river Danube who were born between 1925 and 1926. They were investigated at the age of 75 years and followed up after 30 months. The follow-up was possible with 488 probands; 36 died, and 61 refused to participate. Results: In multivariate analysis an elevated risk for late-onset AD could be found for (1) history of depressive episodes (OR = 2.09; 95% CI = 1.25–3.48); (2) the Ε4 allele of the APOE gene (OR = 1.86; 95% CI = 1.08–3.23); (3) lower serum level of folate (OR = 0.92; 95% CI = 0.87–0.98); (4) no chronic use of nonsteroidal anti-inflammatory drugs (OR = 0.40; 95% CI = 0.20–0.81), and (5) lower education (OR = 1.43; 95% CI = 1.03–2.00). Conclusions: Five risk factors for late-onset AD could be confirmed, which might be targets for preventive strategies.
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