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Related Concept Videos

Dementia01:30

Dementia

Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
The progression of dementia is generally gradual.
Dementia l: Introduction01:22

Dementia l: Introduction

Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...

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Related Experiment Video

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A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
12:18

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment

Published on: January 11, 2020

Picture-based memory impairment screen for dementia.

Joe Verghese1, Mohan L Noone, Beena Johnson

  • 1Department of Neurology, Albert Einstein College of Medicine, Bronx, New York 10461, USA. joe.verghese@einstein.yu.edu

Journal of the American Geriatrics Society
|October 9, 2012
PubMed
Summary
This summary is machine-generated.

The Picture-Based Memory Impairment Screen (PMIS) effectively detects dementia in older adults. This brief, reliable tool shows high sensitivity and specificity, especially in populations with varying literacy levels.

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Area of Science:

  • Geriatric Medicine
  • Neurology
  • Cognitive Assessment

Background:

  • Dementia diagnosis requires reliable screening tools, particularly in diverse populations.
  • Existing cognitive screens may have limitations in individuals with low literacy or varied educational backgrounds.
  • A culture-fair, picture-based approach can enhance accessibility and accuracy in cognitive screening.

Purpose of the Study:

  • To develop and validate the Picture-Based Memory Impairment Screen (PMIS) for dementia detection.
  • To assess the diagnostic accuracy of PMIS in an elderly population.
  • To compare PMIS performance with established cognitive screening tools.

Main Methods:

  • A cross-sectional study involving 304 community-residing adults aged 55-94.
  • The Picture-Based Memory Impairment Screen (PMIS), a novel cognitive screen, was administered.
  • Diagnostic accuracy metrics (sensitivity, specificity) were calculated for PMIS in detecting dementia.

Main Results:

  • PMIS demonstrated significantly lower scores in participants with dementia compared to controls.
  • At a cut-score of 5, PMIS achieved 95.4% sensitivity and 99.2% specificity for dementia detection.
  • PMIS showed high accuracy in individuals with less than 10 years of education and outperformed the Mini-Mental State Examination in this subgroup.

Conclusions:

  • The Picture-Based Memory Impairment Screen (PMIS) is a brief, reliable, and accurate tool for screening dementia.
  • PMIS is particularly valuable for elderly populations with variable literacy and educational levels.
  • The screen's culture-fair design enhances its utility in diverse settings.