Correlates of cognitive dysfunction in an ambulatory elderly population

Area of Science:

• Gerontology
• Cognitive Science
• Clinical Neuropsychology

Background:

• Cognitive decline is a significant concern in the aging population.
• Understanding factors influencing cognitive function is crucial for early intervention.
• The Mini-Mental State Examination (MMSE) is a widely used tool for assessing cognitive status.

Purpose of the Study:

• To identify correlates of Mini-Mental State Examination (MMSE) scores in an ambulatory elderly population.
• To investigate the relationship between cognitive function and self-reported health indicators, diseases, medications, and laboratory values.

Main Methods:

• A cross-sectional study of 1,264 ambulatory elderly individuals (844 women, 420 men).
• Analysis using a linear-regression model to identify significant predictors of MMSE scores.
• Data collected included demographics, self-reported symptoms, diseases, drug use, and serum lactate dehydrogenase levels.

Main Results:

• 5.0% of men and 5.3% of women scored below 24 on the MMSE, indicating potential cognitive impairment.
• Key predictors of lower MMSE scores included advanced age, self-reported memory loss, swollen feet/ankles, number of reported diseases, and serum lactate dehydrogenase concentration.
• The study identified eleven significant factors influencing MMSE scores.

Conclusions:

• Cognitive function in the elderly is influenced by a combination of age, subjective memory complaints, physical symptoms, and specific biomarkers.
• General health status and specific disease states do not appear to consistently affect cognitive function as measured by the MMSE.
• These findings highlight the importance of considering multiple factors, beyond general health, when assessing cognitive function in older adults.