Search Results Use the search box below to revise your search, or start a new search. Studies (4) Variables Publications Your query returned 4 studies. Series results are grouped under the most relevant study. Ungroup series results to view all results. Sort by: Study Relevance Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Variable Relevance 1. Oregon Youth Substance Use Project (OYSUP), 1998-2010 (ICPSR 34263) Andrews, Judy 2. National Longitudinal Study of Adolescent to Adult Health (Add Health), 1994-2008 [Public Use] (ICPSR 21600) Harris, Kathleen Mullan; Udry, J. Richard 3. Schools and Families Educating (SAFE) Children Study [Chicago, IL]: 1997-2008 (ICPSR 34368) Tolan, Patrick; Gorman-Smith, Deborah; Henry, David; et al. 4. Youth Development Study, 1988-2011 [St. Paul, Minnesota] (ICPSR 24881) Mortimer, Jeylan T.