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Cited by 576Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsNeurological Disease Mechanisms and Treatments

The DOI matches its Crossref record; 49 of the 49 references it cites were found in a registry or an index.

The Natural History of Alzheimer's Disease: Description of Study Cohort and Accuracy of Diagnosis

Becker, James T.·1994·Archives of Neurology
DOI 10.1001/archneur.1994.00540180063015
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Abstract

OBJECTIVE: We describe the sampling, initial evaluation, and final diagnostic classification of subjects enrolled in a natural history study of Alzheimer's disease (AD). DESIGN: Volunteer cohort study. SETTING: Multidisciplinary behavioral neurology research clinic. PATIENTS OR OTHER PARTICIPANTS: Three-hundred nineteen individuals were enrolled in the Alzheimer Research Program between March 1983 and March 1988. Of these, 204 were originally classified with AD, 102 were normal elderly control subjects, and 13 were considered special cases. MAIN OUTCOME MEASURES: Final consensus clinical diagnosis, final neuropathologic diagnosis, and death. RESULTS: Of the 204 patients enrolled in the study, re-review after as many as 5 years of follow-up resulted in a final clinical classification of 188 with probable AD. Seven patients were believed to have a significant vascular component to the dementia, three were found to have developed depression, and six were excluded on other clinical grounds. Neuropathologic examination of 50 brains indicated definite AD in 43. After removing these seven misdiagnosed patients, the final group of probable/definite AD totaled 181 individuals. Accuracy of the baseline clinical diagnosis relative to neuropathology was 86%, and when follow-up clinical data were considered, 91.4%. Detailed neuropsychological testing yielded high sensitivity (0.988) and specificity (0.983) to dementia. Analyses of survival time from study entry until death revealed that older patients were significantly more likely to die during follow-up, but neither sex, years of education, nor pattern of cognitive impairment were related to survival. CONCLUSIONS: These data provide the descriptive basis for future studies of this cohort. They indicate that longitudinal follow-up of demented cases increases accuracy of diagnosis, and that detailed cognitive testing aids in early classification.

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Metadata

Authors
Becker, J. T.
Affiliations
University of Pittsburgh Medical Center (US)
Corresponding author
Becker, James T.
ORCID
Becker, James T.
Venue
Archives of Neurology
Publisher
American Medical Association (AMA)
Published
1994-06-01
Volume
51
Issue
6
Pages
585
ISSN
0003-9942 (ISSN-L)
DOI
10.1001/archneur.1994.00540180063015
OpenAlex
W2074037951
Cited by
576
References
49
Citations by year
2026: 53 · 2025: 67 · 2024: 63 · 2023: 59 · 2022: 53 · 2021: 61 · 2020: 62 · 2019: 26 · 2018: 15 · 2017: 14 · 2016: 7 · 2015: 7 · 2014: 1 · 2013: 1 · 2012: 2
FWCI
5.79
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of Neurology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5p01ag003705-04)
  • National Institute on Aging (AG 05-133, P50AG005133, AG 03705)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neurological Disease Mechanisms and Treatments
Keywords
Alzheimer's disease, natural history (disease), diagnosis, neuropathologic diagnosis, diagnostic accuracy, dementia, neuropsychological assessment, survival, death, vascular dementia, depression, cohort studies
MeSH terms
Aged, Alzheimer Disease, Mental Disorders, Female, Humans, Male, Middle Aged, Nervous System, Nervous System Diseases, Neuropsychological Tests, Cohort Studies

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