[Heroin abuse among Danish prisoners on remand. I. Prevalence related to form of administration].

Two groups of Danish prisoners on remand (in solitary confinement and not in solitary confinement) were examined by interview on reception (n = 133 & n = 95) in order to evaluate the prevalence and form of administration of opioid abuse/dependence. About 50% had abused opioids during their lifetime; one third were dependent at the time of reception. Twenty percent of opioid dependent prisoners administered opioids by smoking. More intravenous users were treated with methadone before and during imprisonment than those who were dependent on smoking opioids. Few were objectively suffering from withdrawal symptoms. The psycho-social impact of dependence on smoking heroin and intravenous heroin one month prior to imprisonment was at the same level and substantial as measured by the Global Assessment Scale.