Substance Use(All Subjects; N=437)
Average Years Use (all drugs): 15.8 yrs
Primary Substances of Abuse
25% Alcohol (n=108)
41% Opiates (n=178)
19% Cocaine/Crack (n=85)
12% Methamphetamine (n=55)
2% Marijuana (n=8)
1% Other (n=3)
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