Study Search Results Your query returned 3 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 Treatment Improvement Evaluation Study (NTIES), 1992-1997 (ICPSR 2884) United States Department of Health and Human Services. Substance Abuse and Mental Health Services Administration. Center for Substance Abuse Treatment 2. Drug Abuse Treatment Outcome Study (DATOS), 1991-1994: [United States] (ICPSR 2258) United States Department of Health and Human Services. National Institutes of Health. National Institute on Drug Abuse 3. Criminal Justice Drug Abuse Treatment Studies (CJ-DATS): HIV/HEPATITIS Prevention for Re-Entering Drug Offenders (ICPSR 29061) Inciardi, James A.