Medical history and the risk of Alzheimer's disease: a collaborative re-analysis of case-control studies. EURODEM Risk Factors Research Group.
In a re-analysis of eight case-control studies on Alzheimer's disease we explored several medical conditions that had previously been suggested as possible risk factors for Alzheimer's disease. History of hypothyroidism was increased in cases as compared to controls (relative risk 2.3; 95% confidence interval 1.0-5.4). Severe headaches and migraine were inversely related to Alzheimer's disease (relative risk 0.7; 95% confidence interval 0.5-1.0). More cases than controls reported epilepsy before onset of Alzheimer's disease (relative risk 1.6; 95% confidence interval 0.7-3.5), especially for epilepsy with an onset within 10 years of onset of dementia. Neurotropic viruses, allergic conditions, general anaesthesia and blood transfusions were not associated with Alzheimer's disease.
Breteler
M M
MM
Department of Epidemiology and Biostatistics, Erasmus University Medical School, Rotterdam, The Netherlands.
van Duijn
C M
CM
Chandra
V
V
Fratiglioni
L
L
Graves
A B
AB
Heyman
A
A
Jorm
A F
AF
Kokmen
E
E
Kondo
K
K
Mortimer
J A
JA
D000544:Alzheimer Disease / Q000453:epidemiology / Q000209:etiology*; D001315:Australia / Q000453:epidemiology; D016022:Case-Control Studies; D005060:Europe / Q000453:epidemiology; D006801:Humans; D015201:Meta-Analysis as Topic; D012307:Risk Factors; D014481:United States / Q000453:epidemiology