Profiling and Comparing Alzheimer's disease patient populations in research
databases and electronic health records 
   Lead Investigator:    Chunhua Weng
   Institution      :    Columbia University
   E-Mail           :    cw2384@cumc.columbia.edu
   Proposal ID      :    510



   Proposal Description:
   We are interested in comparing the Alzheimer???s patient populations to the target populations in Alzheimer???s clinical trials made available by the ClinicalTrials.gov.  We will compare AD patients in the NACC database (MDS specifically) to AD patients in our electronic health records and AD patients in all AD trials in ClinicalTrials.gov.  Therefore, we will use all variables that are present in at least two of these datasets.  We will investigate the value distribution for each variable and assess which value range is not considered by clinical trial designers when selecting AD patients into clinical trials.