Search Results Use the search box below to revise your search, or start a new search. Studies (2) Variables Publications Your query returned 2 studies. Series results are grouped under the most relevant study. Ungroup series results to view all 2 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. Addiction Health Evaluation and Disease (AHEAD) Management Study in Boston, Massachusetts, 2006-2010 (ICPSR 33581) Saitz, Richard; Samet, Jeffrey H.