This study validates the use of the ASI-6 (Addiction Severity Index, version 6) as a practical risk assessment tool to predict short and long term offender re-arrest. The ASI-6 conservatively predicted between 43% and 58% of offender re-arrest within one, three- and five-year intervals (not taking into account demographic variables). This study utilizes offender intake data from 434 offenders within an Access to Recovery (ATR) substance abuse program with municipal, county and state correctional data on re-arrest. Offenders who scored highly within each of the seven domains of the ASI-6 metrics were also found to be more likely to be re-arrested over one, three and/or five years post release from custody.
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