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  • Title: Cognitive impairment and resource use of nursing home residents: a structural equation model.
    Author: Arling G, Williams AR.
    Journal: Med Care; 2003 Jul; 41(7):802-12. PubMed ID: 12835604.
    Abstract:
    BACKGROUND: Only a few studies have examined relationships between cognitive impairment and resource use of nursing home residents, and these studies have yielded mixed results. METHODS: To develop and test structural equation models for relationships between cognitive impairment, covariates, and resource use of nursing home residents on Alzheimer special care units (SCUs) and conventional units. RESEARCH DESIGN: Analysis of data obtained in 1999 from an Indiana nursing facility time study that measured resident-specific direct care minutes per day, and assessment data from the Minimum Data Set (version 2.0). PARTICIPANTS: Participants were 1290 residents without specialized nursing requirements or licensed therapies: 447 drawn from 22 SCUs in 16 facilities, 485 from 16 conventional units in the same facilities, and 358 from units in 13 facilities without SCUs. MEASURES: Direct care resource use (weighed minutes/d), Cognitive Performance Scale, activities of daily living (ADLs), clinically complex conditions, daily behavioral problems, physical restraints, psychotropic medication, and Alzheimer or dementia diagnosis. RESULTS: Cognitive impairment had a substantial indirect effect on resource use in facilities with and without SCUs. This effect was mediated largely through ADL dependency and SCU placement. Severity of cognitive impairment was strongly related to ADL dependency, and ADL, in turn, was a strongly related to resource use. Also, residents on SCUs used significantly more direct care resources than residents on conventional units. CONCLUSIONS: This study demonstrates relationships between cognitive impairment, covariates, and resource use for nursing home residents on SCUs and conventional units. It also raises issues about reimbursement for care of dementia residents.
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