People in Prison with Drug Addiction or Dependence
"Violent offenders (47%) were the only offender group in State prisons with less than half meeting the DSM-IV criteria for drug dependence or abuse. Property and drug offenders (63% of each) were the most likely to be drug dependent or abusing.
"Drug offenders (52%) were the only group of Federal inmates with at least half meeting the drug dependence or abuse criteria. Property offenders (27%) reported the lowest percentage of drug dependence or abuse."
Mumola, Christopher J., and Karberg, Jennifer C., "Drug Use and Dependence, State and Federal Prisoners, 2004," (Washington, DC: US Dept. of Justice, Oct. 2006) (NCJ213530), p. 7.