BACKGROUND AND PURPOSE: To investigate whether there may be differences in the clinical course and changes in cognitive progression between dementia with Lewy bodies (DLB) and Alzheimer's disease (AD). METHODS: We compared the time from the first visit to endpoints (discontinuation of visits because of admission, death, or institutionalization) between 56 patients with DLB and 111 patients with AD. Mini-Mental State Examination (MMSE) scores of patients were every 12 months examined up to 60 months. RESULTS: Dementia with Lewy bodies had a significantly shorter time to reaching endpoints than those with AD (median time; 40 months vs. 52 months, P < 0.0001). The proportion of admission (or death) was significantly higher in DLB than in AD (30% vs. 14%, P < 0.05), while the difference in institutionalization in nursing homes did not reach statistical significance (25% vs. 17%). Rates of longitudinal MMSE score decline for DLB and AD groups were equivalent. CONCLUSION: Dementia with Lewy bodies had a greater risk of admission (or death) because of most commonly fall-related injuries and bronchopneumonia than AD, but the two groups did not differ in rate of cognitive decline.
BACKGROUND AND PURPOSE: To investigate whether there may be differences in the clinical course and changes in cognitive progression between dementia with Lewy bodies (DLB) and Alzheimer's disease (AD). METHODS: We compared the time from the first visit to endpoints (discontinuation of visits because of admission, death, or institutionalization) between 56 patients with DLB and 111 patients with AD. Mini-Mental State Examination (MMSE) scores of patients were every 12 months examined up to 60 months. RESULTS:Dementia with Lewy bodies had a significantly shorter time to reaching endpoints than those with AD (median time; 40 months vs. 52 months, P < 0.0001). The proportion of admission (or death) was significantly higher in DLB than in AD (30% vs. 14%, P < 0.05), while the difference in institutionalization in nursing homes did not reach statistical significance (25% vs. 17%). Rates of longitudinal MMSE score decline for DLB and AD groups were equivalent. CONCLUSION:Dementia with Lewy bodies had a greater risk of admission (or death) because of most commonly fall-related injuries and bronchopneumonia than AD, but the two groups did not differ in rate of cognitive decline.
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