Six ''pure'' types of case-manager activity are identified using chart
data from 922 cases in the Medicare Alzheimer's Disease Demonstration
. The association between case-manager actions and client characterist
ics, and between case-manager activities and service use outcomes is u
sed to test predictive validity. Case-manager activity is generally mo
re associated with caregiver than client characteristics. Monitoring a
nd service management was protective against nursing home placement. A
clinical nursing emphasis was protective against hospitalization. Und
erstanding how case management is differentiated may improve staffing,
treatment protocol, and client service outcomes.