 The subjects in this study are physicians working in the Wishard Emergency Department. The purpose of this study is to measure the extent to which information technology i.e.-computers improves emergency department care. The objective of our study is to evaluate the use of informatics in the emergency department and specifically to determine if computer reminder systems: 1 reduce the number of unsafe medications prescribed to older adults, 2 assist in more safely dosing of medications to adults of all ages, and 3 increase influenza immunization of eligible older patients in the emergency department. 