Mild cognitive impairment and everyday functioning in older adults

Area of Science:

• Gerontology
• Neuropsychology
• Public Health

Background:

• Mild cognitive impairment without dementia (MCI/CIND) affects a significant portion of the aging population.
• Understanding the impact of MCI/CIND on daily life is crucial for effective care and support.
• The Canadian Study of Health and Aging (CSHA) provides valuable longitudinal data on cognitive decline and aging.

Purpose of the Study:

• To examine the relationship between mild cognitive impairment without dementia (MCI/CIND) and instrumental activities of daily living (IADL).
• To identify specific cognitive domains that predict functional decline in individuals with MCI/CIND.

Main Methods:

• Utilized data from the Canadian Study of Health and Aging (CSHA).
• Identified MCI/CIND based on consensus between caregiver reports and clinician judgment.
• Employed cross-sectional and longitudinal analyses comparing individuals with MCI/CIND to those with no cognitive impairment (NCI).
• Assessed functional abilities using instrumental activities of daily living (IADL) measures.
• Correlated neuropsychological test results (memory, psychomotor speed) with functional impairments.

Main Results:

• Individuals with MCI/CIND exhibited significant impairments across a wide range of IADLs compared to NCI individuals.
• Neuropsychological measures, particularly memory and psychomotor speed, were strongly associated with functional deficits in eight areas.
• Poorer performance on memory tests was a significant predictor of future difficulties in managing finances.

Conclusions:

• MCI/CIND is associated with substantial deficits in everyday functional abilities.
• Memory and psychomotor speed are key cognitive predictors of functional decline in individuals with MCI/CIND.
• Early identification of cognitive changes is vital for addressing potential IADL impairments, such as financial management.