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Related Experiment Videos

Screening for dementia: Cognitive Assessment Screening Test (CAST)

D A Drachman1, J M Swearer

  • 1University of Massachusetts Medical Center, Worcester, USA.

American Family Physician
|November 1, 1996
PubMed
Summary

The Cognitive Assessment Screening Test (CAST) is a brief tool for screening geriatric patients for dementia. It effectively identifies cognitive decline with high sensitivity and specificity, similar to other dementia screening methods.

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Area of Science:

  • Geriatric Medicine
  • Neurology
  • Psychometrics

Background:

  • Dementia screening is crucial for early intervention in geriatric populations.
  • Existing screening tools vary in length, complexity, and administration requirements.
  • There is a need for efficient and reliable dementia screening instruments suitable for clinical settings.

Purpose of the Study:

  • To introduce and evaluate the Cognitive Assessment Screening Test (CAST) as a tool for screening geriatric patients for dementia.
  • To assess the feasibility and psychometric properties of the CAST in a clinical setting.

Main Methods:

  • The CAST is a self-administered, paper-and-pencil test comprising three sections: Part A (10 simple questions), Part B (5 demanding questions), and Part C (13 self-report questions).

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  • Parts A and B assess cognitive function against dementia thresholds, while Part C evaluates self-perceived memory and competence decline.
  • The test is designed for office use, requiring minimal examiner time and training.

    • Main Results:

    • The CAST effectively differentiates between normal cognition and cognitive impairment indicative of dementia.
    • It demonstrates comparable sensitivity and specificity to other brief dementia screening instruments.
    • The self-administered nature and minimal requirements facilitate its use in routine geriatric care.

    Conclusions:

    • The Cognitive Assessment Screening Test (CAST) is a valid and efficient screening tool for dementia in geriatric patients.
    • Its ease of administration and psychometric properties make it a valuable addition to clinical practice for early dementia detection.