Study Search Results Your query returned 3 results. 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. Latino MSM Community Involvement: HIV Protective Effects (ICPSR 34385) Ramirez-Valles, Jesus 2. National Longitudinal Study of Adolescent to Adult Health (Add Health), 1994-2008 [Public Use] (ICPSR 21600) Harris, Kathleen Mullan; Udry, J. Richard 3. Monitoring the Future: A Continuing Study of American Youth (12th-Grade Survey), 2006 (ICPSR 20022) Johnston, Lloyd D.; Bachman, Jerald G.; O'Malley, Patrick M.; et al.