Study Search Results Your query returned 1 results. Series results are grouped under the most relevant study. You can ungroup series results. Results per page: 25 50 100 Sort by: Study Relevance Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Variable Relevance (?) Study Title/Investigator 1. Established Populations for Epidemiologic Studies of the Elderly, 1996-1997: Piedmont Health Survey of the Elderly, Fourth In-Person Survey [Durham, Warren, Vance, Granville, and Franklin Counties, North Carolina] (ICPSR 2744) Blazer, Dan G.; George, Linda K.