NPI-Q scores across different study populations Lead Investigator: Fanny Leung Institution : University of Pennsylvania E-Mail : yyee@mail.med.upenn.edu Proposal ID : 322 Proposal Description: We want to investigate how the NPIQ scores differ between different dementia subtypes in different study populations. In particular, clustering and factor analysis will be used to identify these sub-domain patterns. In addition, we would like to investigate if there are any relationship between the biomarker levels and these observed performance.