Key result
Cognitive testing in older adults showed that 25-35% of subjects with memory impairment had comorbid executive control function (ECF) impairment, and 4-7% had isolated ECF impairment.
Why the study?
What is the relative frequency of isolated memory impairment versus isolated and comorbid impairment in executive control function among elderly residents?
Population
193 noninstitutionalized residents of a single Comprehensive Care Retirement Community, mean age 79.2 years
Design
Cross-sectional
Authors
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Comorbid ECF impairment warrants diagnostic caution in memory-impaired elderly; leaves open prospective validation of revised MCI criteria.
Cross-Sectional (n=193)
No
What is the relative frequency of isolated memory impairment versus isolated and comorbid impairment in executive control function among elderly residents?
A significant fraction of patients meeting criteria for mild cognitive impairment have comorbid executive control function impairment, suggesting they might be more properly classified as demented.
Royall et al. (2004) conducted a cross-sectional in Mild Cognitive Impairment (n=193). Cognitive testing (memory and executive control function) was evaluated on Relative frequency of isolated memory impairment versus isolated and comorbid impairment in executive control function (ECF). Cognitive testing in older adults showed that 25-35% of subjects with memory impairment had comorbid executive control function (ECF) impairment, and 4-7% had isolated ECF impairment.
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