<qa>  What is the purpose of the study?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. 