Using existing national VA outpatient, inpatient, and pharmacy databases in conjunction with Medicare inpatient and outpatient standard analytic files, the 1999 National Health Survey of VA Enrollees, American Hospital Association data, and primary data collection, we will identify the extent to which treatment for older veterans newly diagnosed with epilepsy changed between FY00-FY04, and identify predictors of change at the patient, provider, and system levels. We will begin to identify barriers to use of recommended AED using structured interviews with primary care and general neurology providers in sites with high and low use of suboptimal AEDs in incident cases. Finally, we will compare hospitalizations, emergency room visits, and fall-related injuries (including fractures) for patients on different AED regimens.