Search Results Use the search box below to revise your search, or start a new search. Studies (1) Variables Publications Your query returned 1 studies. Series results are grouped under the most relevant study. Ungroup series results to view all results. Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. National Social Life, Health, and Aging Project (NSHAP): Wave 1 (ICPSR 20541) Waite, Linda J.; Laumann, Edward O.; Levinson, Wendy; et al.