Declining executive control in normal aging predicts change in functional status: The freedom house study
Declining executive control in normal aging predicts change in functional status: The freedom house study
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DOI:
10.1111/j.1532-5415.2004.52104.x
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发表时间:
2004-03-01
影响因子:
6.3
通讯作者:
Polk, MJ
中科院分区:
文献类型:
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作者:
Royall, DR;Palmer, R;Polk, MJ
OBJECTIVES: To assess the contribution of executive control function (ECF) to functional status.DESIGN: Three-year longitudinal cohort study.SETTING: A comprehensive-care retirement community.PARTICIPANTS: Five hundred forty-seven noninstitutionalized septuagenarians.MEASUREMENTS: The Mini-Mental State Examination (MMSE) and Executive Interview (EXIT25). Functional status was assessed using instrumental activities of daily living (IADLs). Latent growth curves of MMSE, EXIT25, and IADL were modeled. The rate of change in IADLs (DeltaIADL), adjusted for baseline IADLs and cognition, was regressed on the rate of change in each cognitive measure (adjusted for baseline cognition). Models were also adjusted for baseline age, level of care, and comorbid illnesses.RESULTS: Baseline test scores were within normal ranges, but mean EXIT25 scores reached the impaired range by the second follow-up. There was significant variability around the baseline means and slopes for all variables. The rate of change in EXIT25 was strongly correlated with DeltaIADL (r=-0.57, P