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Correspondence: Address correspondence to Judith J. McCann, Rush Institute for Healthy Aging, Rush University Medical Center, 1645 W. Jackson Blvd., Suite 675, Chicago, IL 60612. E-mail: judy_j_mccann{at}rush.edu
Purpose: This longitudinal study examined whether the use of adult day care services delayed time to nursing home placement in persons with Alzheimer's disease. Design and Methods: Two hundred and eighteen adult day care clients with Alzheimer's disease were recruited from 16 adult day programs in a large metropolitan area. Two hundred and ninety eight persons with Alzheimer's disease but not using adult day care were recruited from a federally funded Alzheimer's diagnostic center and frequency matched to adult day care users on age, gender, race, and level of cognitive impairment. Participants were followed at 3-month intervals for up to 48 months. Cox proportional hazards models were used to examine the effects of adult day care and other fixed and time-varying factors on risk of nursing home placement. Results: Risk of nursing home placement increased significantly with the number of days of adult day care attendance, with this effect being substantially greater for men (hazard ratio or HR = 1.33; confidence interval or CI = 1.18–1.49) than for women (HR = 1.09; CI = 1.00–1.18). Participant disability and hospitalizations and caregiver age and burden were independent predictors, but their inclusion in the model did not alter the risk associated with adult day care. Implications: More severe disease and greater caregiver burden did not explain the increased risk of nursing home placement among adult day care users with Alzheimer's disease. Rather, it appears that other unmeasured factors, such as a proclivity to institutionalize, may account for the association of adult day care to nursing home risk.
Key Words: Community-based services • Institutionalization • Longitudinal study • Survival analysis
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