Age and education effects and norms on a cognitive test battery from a population-based cohort: The Monongahela–Youghiogheny Healthy Aging Team
Open Access
- 1 January 2010
- journal article
- research article
- Published by Taylor & Francis in Aging & Mental Health
- Vol. 14 (1) , 100-107
- https://doi.org/10.1080/13607860903071014
Abstract
Performance on cognitive tests can be affected by age, education, and also selection bias. We examined the distribution of scores on several cognitive screening tests by age and educational levels in a population-based cohort. An age-stratified random sample of individuals aged 65+ years was drawn from the electoral rolls of an urban US community. Those obtaining age and education-corrected scores > or = 21/30 on the Mini-Mental State Examination (MMSE) were designated as cognitively normal or only mildly impaired, and underwent a full assessment including a battery of neuropsychological tests. Participants were also rated on the Clinical Dementia Rating (CDR) scale. The distribution of neuropsychological test scores within demographic strata, among those receiving a CDR of 0 (no dementia), are reported here as cognitive test norms. After combining individual test scores into cognitive domain composite scores, multiple linear regression models were used to examine associations of cognitive test performance with age and education. In this cognitively normal sample of older adults, younger age and higher education were associated with better performance in all cognitive domains. Age and education together explained 22% of the variation of memory, and less of executive function, language, attention, and visuospatial function. Older age and lesser education are differentially associated with worse neuropsychological test performance in cognitively normal older adult representatives of the community at large. The distribution of scores in these participants can serve as population-based norms for these tests, and can be especially useful to clinicians and researchers assessing older adults outside specialty clinic settings.Keywords
This publication has 16 references indexed in Scilit:
- How much do depressive symptoms affect cognition at the population level? The monongahela–youghiogheny healthy aging team (MYHAT) studyInternational Journal of Geriatric Psychiatry, 2009
- Influence of sociodemographic variables on neuropsychological test performance in Spanish-speaking older adultsJournal of Clinical and Experimental Neuropsychology, 2007
- Norms and the Effects of Demographic Variables on a Neuropsychological Battery for Use in Healthy Ageing Australian PopulationsAustralian & New Zealand Journal of Psychiatry, 1999
- Cognitive impairment or inadequate norms? A study of healthy, rural, older adults with limited educationThe Clinical Neuropsychologist, 1997
- Neuropsychological tests' norms above age 55: COWAT, BNT, MAE token, WRAT-R reading, AMNART, STROOP, TMT, and JLOThe Clinical Neuropsychologist, 1996
- Effects of age, education, and gender on cerad neuropsychological test performance in an african American sampleThe Clinical Neuropsychologist, 1996
- Effects of Age, Gender, and Education on Cognitive Tests in a Rural Elderly Community Sample: Norms from the Monongahela Valley Independent Elders SurveyNeuroepidemiology, 1991
- Validation of clinical diagnostic criteria for Alzheimer's diseaseAnnals of Neurology, 1988
- A New Clinical Scale for the Staging of DementiaThe British Journal of Psychiatry, 1982
- “Mini-mental state”Journal of Psychiatric Research, 1975