Study Search Results Your query returned 4 results. Series results are grouped under the most relevant study. You can ungroup series results. Use the search box below to revise your search, or start a new search. Results per page: 25 50 100 Sort by: Study Relevance Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Most Downloaded Variable Relevance (?) Study Title/Investigator 1. Oregon Youth Substance Use Project (OYSUP), 1998-2010 (ICPSR 34263) Andrews, Judy 2. National Comorbidity Survey: Baseline (NCS-1), 1990-1992 (ICPSR 6693) Kessler, Ronald C. 3. Monitoring the Future: A Continuing Study of American Youth (8th- and 10th-Grade Surveys), 1992 (ICPSR 2522) Johnston, Lloyd D.; Bachman, Jerald G.; O'Malley, Patrick M.; et al. 2 more results in Monitoring the Future (MTF) Series 4. Addiction Health Evaluation and Disease (AHEAD) Management Study in Boston, Massachusetts, 2006-2010 (ICPSR 33581) Saitz, Richard; Samet, Jeffrey H.