PROFILES OF COGNITIVE FUNCTIONING IN A POPULATION-BASED SAMPLE OF CENTENARIANS USING FACTOR MIXTURE ANALYSIS.
Saved in:
| Title: | PROFILES OF COGNITIVE FUNCTIONING IN A POPULATION-BASED SAMPLE OF CENTENARIANS USING FACTOR MIXTURE ANALYSIS. |
|---|---|
| Authors: | Davey, Adam (AUTHOR), Dai, Ting (AUTHOR), Woodard, JohnL. (AUTHOR), Miller, L.Stephen (AUTHOR), Gondo, Yasuyuki (AUTHOR), Johnson, MaryAnn (AUTHOR), Hausman, DorothyB. (AUTHOR), Martin, Peter (AUTHOR), Green, RobertC. (AUTHOR), Allen, RobertH. (AUTHOR), Stabler, SallyP. (AUTHOR), Poon, LeonardW. (AUTHOR) |
| Source: | Experimental Aging Research. Mar/Apr2013, Vol. 39 Issue 2, p125-144. 20p. |
| Subjects: | Mortality risk factors, Public health surveillance, Functional assessment, Age distribution, Aging, Apolipoproteins, Blood testing, Cluster analysis (Statistics), Cognitive testing, Statistical correlation, Mental depression, Experimental design, Folic acid, Intelligence tests, Latent structure analysis, Neuropsychological tests, Nursing home residents, Psychological tests, Psychometrics, Race, Research evaluation, Research funding, Scales (Weighing instruments), Sex distribution, Statistics, T-test (Statistics), Logistic regression analysis, Data analysis, Activities of daily living, Educational attainment, Cross-sectional method, Receiver operating characteristic curves, Geriatric Depression Scale, Descriptive statistics |
| Geographic Terms: | Georgia |
| Abstract: | Background/Study Context: The goal of the study was to identify and characterize latent profiles (clusters) of cognitive functioning in centenarians and the psychometric properties of cognitive measures within them. Methods: Data were collected from cross-sectional, population-based sample of 244 centenarians (aged 98 to 108, 15.8% men, 20.5% African American, 38.0% community-dwelling) from 44 counties in northern Georgia participating in the Georgia Centenarian Study (2001-2008). Measures included the Mini-Mental State Examination (MMSE), Severe Impairment Battery (SIB), Wechsler Adult Intelligence Scale-III Similarities subtest (WAIS), Hand Tapping, Behavioral Dyscontrol Scale (BDS), Controlled Oral Word Association Test (COWAT), and Fuld Object Memory Evaluation (FOME). The Global Deterioration Rating Scale (GDRS) was used to independently evaluate criterion-related validity for distinguishing cognitively normal and impaired groups. Relevant covariates included directly assessed functional status for basic and instrumental activities of daily living (DAFS), race, gender, educational attainment, Geriatric Depression Scale Short Form (GDS), and vision and hearing problems. Results: Results suggest two distinct classes of cognitive performance in this centenarian sample. Approximately one third of the centenarians show a pattern of markedly lower cognitive performance on most measures. Group membership is independently well predicted (area under the curve [AUC]=.83) by GDRS scores (sensitivity 67.7%, specificity 82.4%). Membership in the lower cognitive performance group was more likely for individuals who were older, African Americans, had more depressive symptoms, lower plasma folate, carriers of the apolipoprotein E (APOE) c4 allele, facility residents, and individuals who died in the 2 years following interview. Conclusions: In a population expected to have high prevalence of dementia, latent subtypes can be distinguished via factor mixture analysis that provide normative values for cognitive functioning. The present study allows estimates for normative cognitive performance in this age group. [ABSTRACT FROM AUTHOR] |
| Copyright of Experimental Aging Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
|
Full text is not displayed to guests.
Login for full access.
|
|
| Abstract: | Background/Study Context: The goal of the study was to identify and characterize latent profiles (clusters) of cognitive functioning in centenarians and the psychometric properties of cognitive measures within them. Methods: Data were collected from cross-sectional, population-based sample of 244 centenarians (aged 98 to 108, 15.8% men, 20.5% African American, 38.0% community-dwelling) from 44 counties in northern Georgia participating in the Georgia Centenarian Study (2001-2008). Measures included the Mini-Mental State Examination (MMSE), Severe Impairment Battery (SIB), Wechsler Adult Intelligence Scale-III Similarities subtest (WAIS), Hand Tapping, Behavioral Dyscontrol Scale (BDS), Controlled Oral Word Association Test (COWAT), and Fuld Object Memory Evaluation (FOME). The Global Deterioration Rating Scale (GDRS) was used to independently evaluate criterion-related validity for distinguishing cognitively normal and impaired groups. Relevant covariates included directly assessed functional status for basic and instrumental activities of daily living (DAFS), race, gender, educational attainment, Geriatric Depression Scale Short Form (GDS), and vision and hearing problems. Results: Results suggest two distinct classes of cognitive performance in this centenarian sample. Approximately one third of the centenarians show a pattern of markedly lower cognitive performance on most measures. Group membership is independently well predicted (area under the curve [AUC]=.83) by GDRS scores (sensitivity 67.7%, specificity 82.4%). Membership in the lower cognitive performance group was more likely for individuals who were older, African Americans, had more depressive symptoms, lower plasma folate, carriers of the apolipoprotein E (APOE) c4 allele, facility residents, and individuals who died in the 2 years following interview. Conclusions: In a population expected to have high prevalence of dementia, latent subtypes can be distinguished via factor mixture analysis that provide normative values for cognitive functioning. The present study allows estimates for normative cognitive performance in this age group. [ABSTRACT FROM AUTHOR] |
|---|---|
| ISSN: | 0361073X |
| DOI: | 10.1080/0361073X.2013.761869 |
