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Blood groups in dementia (SDAT) — a pilot study
Published online by Cambridge University Press: 13 June 2014
Abstract
Objective: Various studies have shown an association between ABO blood groups and both physical and mental illness. This pilot study was conducted to find out whether there is any association between ABO blood groups and senile dementia of Alzheimer's type. Methods: The sample was selected from 107 patients admitted to the psychogeriatric assessment unit of the district psychiatric hospital over a period of one year. All Caucasian patients of United Kingdom origin above the age of 70 with confirmed diagnosis of Alzheimer's dementia according to DSM-III criteria who had developed dementia after the age of 65 were included (N = 33); 74 patients were excluded for various reasons. Results: Out of the 33 patients there were 21 (64%) with group A, 3 (9%) with group B, 9 (27%) with group O and none with group AB blood. Among the United Kingdom population there were 79,334 (42%) with group A, 16,280 (9%) with group B, 88,782 (47%) with group O and 5,781 (3%) with group AB blood (p = 0.038). Conclusions: Although the number of cases were not large, the results of this study suggest that the prevalence of type A blood group was greater and O was less for Caucasian Alzheimer's subjects than for the general population.
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- Copyright © Cambridge University Press 1993