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Published on: September 18, 2012
Driving continuity in cognitively impaired older drivers
Hiroyuki Shimada1, Kota Tsutsumimoto1, Sangyoon Lee1
1Department of Functioning Activation, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, Obu, Japan.
Many older men with moderate cognitive decline continue driving, despite impaired cognitive function. This highlights a high-risk group needing further study to prevent crashes.
Area of Science:
- Gerontology
- Neurology
- Public Health
Background:
- Cognitive impairment in older adults poses risks to driving safety.
- Driving errors and crashes are more frequent with cognitive decline.
Purpose of the Study:
- To determine the prevalence of cognitive impairments in older drivers.
- To assess driving behaviors in relation to cognitive function.
Main Methods:
- Population-based survey of 10,073 older adults.
- Cognitive function assessed using Mini-Mental State Examination (MMSE) and National Center for Geriatrics and Gerontology-Functional Assessment Tool.
- Included tests for memory, attention, executive function, processing speed, and visuospatial skills.
Main Results:
- 61% of older men with moderate cognitive decline (MMSE ≤20) continued to drive, compared to 15% of older women.
- Participants with normal cognition (MMSE ≥27) outperformed those with mild or moderate decline on cognitive tests.
- Those with mild cognitive decline scored better than those with moderate decline.
Conclusions:
- A significant proportion of older men with moderate cognitive decline continue driving.
- These drivers exhibit poorer cognitive performance across multiple domains.
- Further research is needed to understand crash risks in this population.
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