Describing controls in the National Alzheimer's Coordinating Center Database Lead Investigator: Dana Meranus Institution : NACC E-Mail : dmeranus@uw.edu Proposal ID : 189 Proposal Description: Aims: This project will be a descriptive analysis of NACC controls (i.e., all persons in the NACC UDS who are cognitively normal at initial visit). It aims to describe thoroughly the controls in NACC's Uniform Dataset (UDS) to provide a comprehensive profile on who the controls are. The results of this project also will serve to inform further research comparing dementia patients to these controls.