Study Search Results Your query returned 2 results. Series results are grouped under the most relevant study. You can ungroup series results. Results per page: 25 50 100 Sort by: Study Relevance Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Variable Relevance (?) Study Title/Investigator 1. National Survey of Substance Abuse Treatment Services (N-SSATS), 2004 (ICPSR 4256) United States Department of Health and Human Services. Substance Abuse and Mental Health Services Administration. Office of Applied Studies 6 more results in National Survey of Substance Abuse Treatment Services (N-SSATS) Series 2. Criminal Justice Drug Abuse Treatment Studies (CJ-DATS) 2: Organizational Process Improvement Intervention (OPII), 2010-2013 [United States] (ICPSR 35082) Prendergast, Michael; Shafer, Michael; Frisman, Linda; et al.