Is medication use by community-dwelling elderly people influenced by cognitive function?

Area of Science:

• Gerontology
• Epidemiology
• Pharmacology

Background:

• Cognitive status is a crucial factor influencing health behaviors in the elderly.
• Understanding medication use patterns in relation to cognitive function is vital for geriatric care.

Purpose of the Study:

• To investigate the association between cognitive status and medication usage among community-dwelling older adults.
• To identify differences in prescription, non-prescription, and therapeutic drug class utilization based on cognitive function.

Main Methods:

• A survey of 4110 elderly participants (aged 65+) from the Duke Established Populations for Epidemiologic Studies of the Elderly.
• In-home interviews assessed medication use (prescription and non-prescription) in the past two weeks.
• Multivariate analyses adjusted for demographic, health, and healthcare access factors, using cognitive status assessed by the Short Portable Mental Status Questionnaire.

Main Results:

• Participants with cognitive impairment (13.7%) were less likely to use any prescription (Adjusted OR=0.66) or non-prescription medications (Adjusted OR=0.71).
• Cognitively impaired individuals were less likely to use analgesics (Adjusted OR=0.66) but more likely to use central nervous system drugs (Adjusted OR=1.55).
• The total number of medications used did not significantly differ between cognitively impaired and intact groups.

Conclusions:

• Medication use patterns in community-dwelling elderly individuals vary significantly with cognitive status.
• Further research is warranted to explore medication use in relation to specific causes of cognitive impairment in the elderly population.