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Staging methods for the assessment of dementia: Perspectives
J Cohen-Mansfield1, B Reisberg, J Bonnema
1Research Institute, Hebrew Home of Greater Washington, Rockville, MD 20852, USA.
The Journal of Clinical Psychiatry
|May 1, 1996
Summary
Developing dementia staging systems requires addressing variability in disease progression and defining essential criteria for accurate individual comparisons and future predictions. Several existing systems are reviewed to guide further research.
Area of Science:
- Gerontology
- Neurology
- Psychometrics
Background:
- Dementia in older adults typically progresses with significant individual differences in pattern and rate.
- Accurate staging of dementia is crucial for individual comparisons and predicting future changes.
- Capturing this interindividual variability in a standardized staging system presents a significant challenge.
Purpose of the Study:
- To explore the core questions underlying the development of dementia staging systems.
- To review existing dementia staging systems for older adults.
- To discuss the utility and future research directions for dementia staging.
Main Methods:
- Review of existing literature on dementia staging systems.
- Analysis of key questions relevant to staging system development, including order of ability loss, essential skills, comprehensiveness, and population applicability.
- Examination of factors influencing staging, such as co-existing medical conditions and prior characteristics like education.
Main Results:
- Several dementia staging systems are described, including the Clinical Dementia Rating, Global Deterioration Scale/Brief Cognitive Rating Scale/Functional Assessment Staging System, Six Clinical Phases of Cognitive Decline, Hierarchic Dementia Scale, and Functional Capacity Scale.
- The review highlights the complexity of capturing functional variability within a single staging framework.
- Consideration of specific populations and interfering medical conditions is essential for accurate dementia staging.
Conclusions:
- The development of robust dementia staging systems necessitates addressing the inherent variability in disease progression.
- Existing systems offer frameworks but require further refinement to fully capture the spectrum of dementia-related functional decline.
- Future research should focus on standardizing methods and validating systems across diverse populations and clinical contexts.
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