Risk-Reducing Effect Of Education In Alzheimer'S Disease
INTERNATIONAL JOURNAL OF GERIATRIC PSYCHIATRY(2008)
摘要
Objective To estimate the effect of education on the risk of Alzheimer's disease (AD).Methods 373 patients diagnosed with AD and 559 healthy control individuals without first degree relatives with known dementia, were included in a case-control study (2003-2006). All individuals were genotyped for APOE alleles. Odds ratio (OR) for developing AD was calculated by binary logistic regression, with the number of APOE epsilon 4 alleles and educational level as covariates. Analyses were carried out separately for men and women and for different age groups.Results Carriers of one APOE F,4 allele had OR of 4.2, and carriers of two APOE epsilon 4 alleles OR of 12.4 for developing AD. When adjusted for the number of APOE 0 alleles, OR for developing AD was significantly reduced in participants with 8-9 years of education compared to those with only 6-7 years, and was reduced further for those with 10-18 years of education. These findings were obtained for all the age groups studied and for both men and women.Conclusions Education had a consistently protective effect on the risk of developing clinical AD in a dose-dependent manner in both men and women, and in all age groups, also when adjusting for the number of APOE epsilon 4 alleles. Male gender was protective, probably at least in part because of a higher educational level. Copyright (C) 2008 John Wiley & Sons, Ltd.
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关键词
Alzheimer, dementia, APOE, education
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