Effects of adult day health care on utilization and cost of care for subgroups of patients.

An important goal of the Adult Day Health Care (ADHC) Evaluation Study was to identify subgroups of patients assigned to ADHC for whom the health care costs were less than, or not higher than, the costs of similar patients assigned to customary care. Patients eligible for VA services because of a severe disability that occurred during military service had significantly lower costs when assigned to ADHC compared with customary care. For several types of patients, total health care costs were not significantly higher for those assigned to ADHC compared with those assigned to customary care: patients who at study intake 1) were at highest risk of going to a nursing home, 2) had high levels of physical dysfunction as measured by the Sickness Impact Profile, 3) had multiple behavior problems, and 4) were eligible for VA services because of a less severe service-connected disability but admitted to the ADHC for treatment of that disability. Two types of patients were found to have particularly high costs when assigned to ADHC compared with customary care: patients with low levels of physical dysfunction and patients with few behavior problems. Significant differences in the relative costs of ADHC versus customary care also were found between the 4 study sites.