Neuroscience
Pavlik VN, Doody RS, Massman PJ, & Chan W. (2006). Influence of premorbid IQ and education on progression of Alzheimer's Disease. Dementia, Geriatrics, & Cognitive Disorders,22(4), 367-377. [Epub ahead of print]
Department of Family and Community Medicine, Baylor College of Medicine, Houston, Tex., USA.
Background: Lower education is associated with a higher risk of developing Alzheimer's disease (AD). Years of education and measures of general intellectual function (IQ) are highly correlated. It is important to determine whether there is a relationship between education and AD outcomes that is independent of IQ. Objective: To test the hypothesis that premorbid IQ is a stronger predictor of cognitive decline, global progression, and overall survival, than education in patients with AD. Methods: The study included 478 probable AD patients (322 women and 156 men, mean age 74.5 years) followed in a large AD referral center for a mean of 3.2 years. Eligible participants had a baseline estimate of premorbid IQ using the American version of the Nelson Adult Reading Test (AMNART) and at least one follow-up visit with complete neuropsychological assessment. We used random effects linear regression analysis, and Cox proportional hazards analysis to determine whether or not education and/or premorbid IQ were independently associated with cognitive decline, global progression of AD, and survival. Results: When the baseline AMNART score was included in regression models along with education and other demographic variables, AMNART score, but not education, was associated with a higher baseline score and slower rate of decline in MMSE and ADAS-Cog scores, and the Clinical Dementia Rating sum of boxes score. Neither higher premorbid IQ nor higher education was associated with longer survival. Conclusions: We conclude that a baseline AMNART score is a better predictor of cognitive change in AD than education, but neither variable is associated with survival after diagnosis. Copyright (c) 2006 S. Karger AG, Basel.
PMID: 16954693 [PubMed - as supplied by publisher]
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Anthony H. Risser | neuroscience | neuropsychology | brain
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Neuroscience
Abstract of the Day: Alzheimer Disease
Pavlik VN, Doody RS, Massman PJ, & Chan W. (2006). Influence of premorbid IQ and education on progression of Alzheimer's Disease. Dementia, Geriatrics, & Cognitive Disorders,22(4), 367-377. [Epub ahead of print]
Department of Family and Community Medicine, Baylor College of Medicine, Houston, Tex., USA.
Background: Lower education is associated with a higher risk of developing Alzheimer's disease (AD). Years of education and measures of general intellectual function (IQ) are highly correlated. It is important to determine whether there is a relationship between education and AD outcomes that is independent of IQ. Objective: To test the hypothesis that premorbid IQ is a stronger predictor of cognitive decline, global progression, and overall survival, than education in patients with AD. Methods: The study included 478 probable AD patients (322 women and 156 men, mean age 74.5 years) followed in a large AD referral center for a mean of 3.2 years. Eligible participants had a baseline estimate of premorbid IQ using the American version of the Nelson Adult Reading Test (AMNART) and at least one follow-up visit with complete neuropsychological assessment. We used random effects linear regression analysis, and Cox proportional hazards analysis to determine whether or not education and/or premorbid IQ were independently associated with cognitive decline, global progression of AD, and survival. Results: When the baseline AMNART score was included in regression models along with education and other demographic variables, AMNART score, but not education, was associated with a higher baseline score and slower rate of decline in MMSE and ADAS-Cog scores, and the Clinical Dementia Rating sum of boxes score. Neither higher premorbid IQ nor higher education was associated with longer survival. Conclusions: We conclude that a baseline AMNART score is a better predictor of cognitive change in AD than education, but neither variable is associated with survival after diagnosis. Copyright (c) 2006 S. Karger AG, Basel.
PMID: 16954693 [PubMed - as supplied by publisher]
-
Anthony H. Risser | neuroscience | neuropsychology | brain
- Neuropsychology Abstract Of The Day: "cognitive And Behavioural Predictors Of Survival In Alzheimer Disease"
Cognitive and behavioural predictors of survival in Alzheimer disease: Results from a sample of treated patients in a tertiary-referral memory clinic Int J Geriatr Psychiatry. 2011 Sep 29; Russ TC, Batty GD, Starr JM Abstract OBJECTIVE: This study examined...
- Neuropsychology Abstract Of The Day: Donepezil, Mci, And Ad
Lu PH, Edland SD, Teng E, Tingus K, Petersen RC, Cummings JL & Alzheimer's Disease Cooperative Study Group. (2009) Donepezil delays progression to AD in MCI subjects with depressive symptoms. Neurology, 72(24):, 2115-2121. Departments of Neurology,...
- Neuropsychology Abstract Of The Day: Mild Cognitive Impairment (mci)
Fleisher AS, Sun S, Taylor C, Ward CP, Gamst AC, Petersen RC, Jack CR, Aisen PS, & Thal LJ. Volumetric MRI vs clinical predictors of Alzheimer disease in mild cognitive impairment. Neurology. 2008 Jan 15; 70(3): 191-199. OBJECTIVE: To compare volumetric...
- Abstract Of The Day: Olfactory Functioning
Wilson RS, Arnold SE, Tang Y, & Bennett DA. Odor identification and decline in different cognitive domains in old age. Neuroepidemiology. 2006; 26(2): 61-67. Rush Alzheimer's Disease Center, Rush Institute for Healthy Aging, and Department of Neurological...
- Abstract Of The Day: Alzheimer Disease
Atchison TB, Bradshaw M, Massman PJ. Investigation of profile difference between Alzheimer's disease patients declining at different rates: Examination of baseline neuropsychological data. Archives of Clinical Neuropsychology. 2004 Dec; 19(8): 1007-1015. ...