What question did this study set out to answer?

To evaluate how well the Clock Test can predict future dementia in individuals who initially do not meet dementia criteria.

January 1, 1997Archives of Clinical NeuropsychologyOpen Access

Early identification of dementia: Predictive validity of the clock test

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Why the study?

Does the Clock Test predict the development of dementia in subjects who initially do not meet dementia criteria?

Population

Subjects who initially did not meet dementia criteria

Comparison

Clock Test (drawing, setting, and reading) vs Subjects who did not later meet criteria for…

Design

Cohort

Authors

NONorm O’RourkeBen-Gurion University of the Negev HTHolly TuokkoUniversity of Victoria SHSherri HaydenUniversity of British Columbia Hospital

Discussion

Member takes

Implication

Supports Clock Test for early dementia risk stratification; hypothesis-generating and should not yet change practice.

Key Points

To evaluate how well the Clock Test can predict future dementia in individuals who initially do not meet dementia criteria.
Longitudinal study design
Subjects initially free from dementia were assessed using the Clock Test
Sensitivity and specificity of the test were measured against time two diagnosis.
Sensitivity of 91% and specificity of 95% for predicting dementia when two or more subtests were below cut-off.
Clock Test scores successfully identified individuals who later met dementia criteria compared to those who did not.
Comparative analysis showed clinic sample's clock errors were deemed normal at the initial assessment.

Structured PICO

Does the Clock Test predict the development of dementia in subjects who initially do not meet dementia criteria?

Population

Subjects who initially did not meet dementia criteria

Intervention

Clock Test (drawing, setting, and reading)

Comparator

Subjects who did not later meet criteria for dementia

Outcome

Meeting criteria for dementia at time two diagnosis

The Clock Test demonstrates high sensitivity and specificity for predicting the future development of dementia in initially non-demented individuals.

Cite This Study

O’Rourke et al. (1997) studied this question.

synapsesocial.com/papers/6a6f752c6c240de38cdb7aa7 https://doi.org/10.1093/arclin/12.3.257

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Early identification of dementia: Predictive validity of the clock test

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Early identification of dementia: Predictive validity of the clock test

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

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