Study Search Results Your query returned 2 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: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Most Downloaded (?) Study Title/Investigator 1. Evaluation of the Hawaii Opportunity Probation with Enforcement (HOPE) Community Supervision Strategy, 2007-2009 (ICPSR 27921) Hawken, Angela 2. Hair Assays for Drugs of Abuse in a Probation Population: Pilot Study in a Florida Correctional Field Setting, 1993 (ICPSR 6527) Mieczkowski, Tom; Newel, Richard A.; Allison, Gale; et al.