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2011 Outcomes From Oregon's Substance Abuse Treatment 12-Month Follow-Up Study Brief [PDF]
2011 Oregon Addictions and Mental Health Division Substance Abuse Treatment Follow-Up Study Final Report [PDF]
2011 Interim 6-Month Outcomes From Oregon's Addiction Treatment Follow-Up Study [PDF]
2010 Regional Research Institute for Human Services Employment Outcomes 2007-2009 [PDF]
2008 Criminal Activity and Substance Abuse Study [PDF]
2006 Clackamas County Juvenile Drug Court Enhancement [PDF] [PowerPoint]
The average cost for the CCJDC program in Clackamas County was $23,656 per participant. Outcome costs were less for Drug Court participants than for the comparison group. Taxpayer savings due to positive outcomes for Drug Court graduates were $10,958 per participant and, in spite of large costs for detention for terminated participants, savings due positive outcome for all participants, regardless of program completion status, were almost $1000 per participant.

2005 Benton County Drug Treatment Court Outcome Evaluation [PDF]
Drug Court participants had an 86.81% reduction in criminal recidivism.

An Evaluation of the Marigold Program Umatilla County [PDF]
For youth who completed therapy, as of program exit, 33% fewer were using alcohol; 63% fewer were using drugs; and 60% fewer were using both alcohol and drugs.

Marion County Adult Drug Court Outcome Evaluation Final Report [PDF]
In the Marion County Adult Drug Court program, 13% of all 62 participants were re-arrested at sometime within the two years after drug court entry while 27% (more than double the number) of the comparison group was rearrested in that time period.

Malheur SAFE Court Cost Evaluation Report [PDF]
84% of drug court participants were not re-arrested in the two years following drug court entry.

2004 Project SPIRIT: Seeking Pathways Into Receiving Integrated Treatment Final Report [Word Doc]
80% of the treatment population showed a positive outcome.

Clackamas County Juvenile Drug Court Outcome Evaluation Final Report [PDF]
The average cost for the CCJDC program in Clackamas County was $23,656 per participant. Outcome costs were less for Drug Court participants than for the comparison group. Taxpayer savings due to positive outcomes for Drug Court graduates were $10,958 per participant and, in spite of large costs for detention for terminated participants, savings due positive outcome for all participants, regardless of program completion status, were almost $1000 per participant.

2003 A Cost-Benefit Evaluation of the Multnomah County Drug Court [PDF]
The total investment cost by the agencies involved in drug court2 averaged $5,927.80 per participant compared to $7,369.32 for “business as usual.” The “business-as-usual” offenders cost $1,441.52 more than the drug court participants. Thus, the drug court approach actually saved the taxpayer money in investment costs.

1998 An Outcome Program Evaluation of the Multnomah County S.T.O.P. Drug Court Diversion Program [PDF]
Clients who participated in the STOP Drug Court Diversion program (graduates and non-graduates) had 61% fewer subsequent arrests over a two-year period compared with a matched sample of clients who, in the same time period, were eligible for the program but did not receive it. STOP graduates had 80% fewer total subsequent serious felony arrests than the comparison group clients over a two-year period. According to figures from the STOP program grant, an estimated $1,002,979 in tax money was spent per cohort of clients who participated in the program. With the estimated total of $2,476,795 of avoided costs savings, we calculate that every taxpayer dollar spent on those cohorts produced $2.50 of avoided costs savings to the taxpayer of Multnomah County. Furthermore, if the broader costs (including victimization and theft costs) are estimated, the ratio of benefit to the Oregon taxpayer is $10 saved for every $1 spent.

1996 Societal Outcomes And Cost Savings Of Drug And Alcohol Treatment In The State Of Oregon [PDF]
Conservatively, every tax dollar spent on treatment produced $5.60 in avoided costs to the taxpayer. Outpatient treatment completers were arrested at a rate 45% lower than the matched group during the three-year period subsequent to treatment. Residential treatment completers were incarcerated at a rate of 70% lower than the matched group. For clients who completed treatment, open child welfare cases decreased by 50% subsequent to treatment.
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