In a study that focused on drug use (excluding alcohol) of those incarcerated between 2007 and 2009, an estimated 58% of state prisoners and 63% of sentenced jail inmates had a drug addiction disorder. In comparison, an estimated 5% of the total general adult population, age 18 or older, met the same criteria for drug addiction.
These findings were reported in “Drug Use, Dependence, And Abuse Among State Prisoners And Jail Inmates, 2007-2009” by Jennifer Bronson, Ph.D., and Jessica Stroop, of the Bureau of Justice Statistics and Stephanie Zimmer and Marcus Berzofsky, Dr.P.H, of RTI International . . .