Most First-time Offenders For Driving While Intoxicated Need Help For More Than Just Alcohol / Medical News Today, 3 April 2007
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"Driving while intoxicated (DWI) is a significant public-health problem in the US. New findings indicate that many first-time DWI offenders also have high rates of other substance-use disorders as well as other psychiatric disorders. Intervention programs may need to provide enhanced services to help this more severe subtype of DWI offenders."

Concurrent and Predictive Validity of Drug Use and Psychiatric Diagnosis Among First-Time DWI Offenders
Alcoholism: Clinical and Experimental Research, Volume 31 Issue 4 Page 619 - April 2007
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Rebekka S. Palmer, Samuel A. Ball, Bruce J. Rounsaville, Stephanie S. O'Malley