The "time and change" test: an appropriate method to detect cognitive decline in the elderly

Area of Science:

• Geriatric Medicine
• Neurology
• Cognitive Science

Background:

• The Time and Change (T&C) test is a validated, efficient screening tool for dementia.
• Geriatric factors may influence cognitive screening test accuracy.
• Reliability of the T&C test in diverse elderly populations requires further investigation.

Purpose of the Study:

• To evaluate the influence of geriatric features (depression, disability, comorbidity) on the T&C test results.
• To determine the T&C test's reliability for screening cognitive impairment in the elderly.
• To assess the T&C test's utility in primary care settings.

Main Methods:

• 220 elderly participants (mean age 75.8 years, 63.7% female) were assessed.
• Participants completed the T&C test, Mini-Mental State Examination, and Clock Drawing Test.
• Activities of Daily Living, Instrumental Activities of Daily Living, comorbidity, and depression were also evaluated.

Main Results:

• T&C-positive participants were older with poorer cognitive scores, higher disability, and comorbidity.
• Multivariate analysis identified cognitive impairment and comorbidity as significant influences on T&C results.
• Age, education, disability, and depression did not independently affect T&C outcomes.

Conclusions:

• The T&C test is a reliable screening tool for cognitive impairment in the elderly.
• Comorbidity is a key factor influencing T&C test results.
• The T&C test should be implemented in primary care for efficient identification of elderly patients needing further cognitive evaluation.