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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Drug Alcohol Depend. 2015 Sep 25;156:70–77. doi: 10.1016/j.drugalcdep.2015.08.036

Table 4.

Self-reported substance use patterns at 4 months after discharge in Substance Use groups at baseline

No Alcohol/Drugs Alcohol only Opioids only Sedatives/hypnotics Only Cocaine Only Marijuana only Polysubstance
Abstinent (%) 82.1 48.7 72.4 69.3 68.4 43.3 59.6
Any substance/alcohol (%) 17.9 51.3 27.6 30.7 31.6 56.7 40.4
Alcohol use (%) 13.1 45.8 13.1 13.2 21.5 17.7 28.3
Opioids use (%) 2.8 3.4 14.0 8.8 2.6 5.3 12.0
Sedatives & Hypnotics use (%) 1.8 2.2 4.0 15.7 3.9 2.4 8.5
Cocaine use (%) 1.4 1.5 2.0 0.9 14.3 2.9 11.8
Cannabis use (%) 4.6 6.4 4.0 3.5 5.8 49.1 22.2