| http://www.w3.org/ns/prov#value | - Information was also collected on subjects??? substance abuse history and treatment for the periods before intake and since release, including primary substance of abuse, age of first use, age of first regular use, day of use in the 30 days before incarceration, use since release, use in the 30 days before the follow-up interview, use per day, and street value per day for the following drugs: alco
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