Abstract
Introduction: We classified individuals based on their baseline performance on cognitive measures and investigated the association between cognitive classifications and neuropathological findings ∼7 years later, as an external validator. Methods: Brain autopsies of 779 decedents were examined. Baseline latent class analysis on 10 neuropsychological measures was previously assigned: mixed-domains impairment (n = 39, 5%), memory-specific impairment (n = 210, 27%), frontal impairment (n = 113, 14.5%), average cognition (n = 360, 46.2%), and superior cognition (n = 57, 7.3%). Linear regressions and risks ratios were used to examine the relation of latent class assignment at enrollment with neuropathological indices. Results: Amyloid β, tau, and transactive response DNA-binding protein 43 were associated with mixed-domains impairment and memory-specific impairment classes ∼7 years before death. Moderate arteriolosclerosis was associated with membership in the frontal impairment class. Discussion: Our findings support the use of latent class models that incorporate more comprehensive neuropsychological measures to classify cognitive impairment.
Original language | English (US) |
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Pages (from-to) | 1195-1207 |
Number of pages | 13 |
Journal | Alzheimer's and Dementia |
Volume | 15 |
Issue number | 9 |
DOIs | |
State | Published - Sep 2019 |
Keywords
- Alzheimer's dementia
- Heterogeneity
- Individual differences
- Latent variable modeling
- Neuropathology
- Neuropsychology
ASJC Scopus subject areas
- Epidemiology
- Health Policy
- Developmental Neuroscience
- Clinical Neurology
- Geriatrics and Gerontology
- Psychiatry and Mental health
- Cellular and Molecular Neuroscience