Handling not-applicable responses in the FAQ Lead Investigator: Dawn Gill Institution : NACC E-Mail : dpgill2@u.washington.edu Proposal ID : 58 Proposal Description: Handling not-applicable responses in the FAQ: An example of functional activities in AD, VaD and DLB 1. Determine whether functional activity levels differ among Alzheimers disease (AD), vascular dementia (VaD), and dementia with Lewy bodies (DLB). 2. Examine whether the relationship in aim #1 varies when different approaches for handling not-applicable responses (to items in the Functional Activities Questionnaire - FAQ) are used. 3. Provide recommendations for handling not-applicable responses in the FAQ via simulation studies using NACC data.