Substance use is a global phenomenon that is particularly
; affecting the prison population. This study aimed to
; describe the prevalence of drug use among people in
; prison before and during incarceration in seven European
; countries and to compare it with the prevalence in the
; general population. Individual data collection was carried
; out between 2014 and 2018 with a model European
; Questionnaire on Drug Use among people in prison. A total
; of 12,918 people living in prison filled in the survey. People
; in prison report higher level of drug use when compared
; with the general population and the use of drug inside
; prison exist, although at lower levels when compared with
; predetention. Prisons can represent a point of access to
; engage individuals who use drugs in interventions that
; address drug use and risk factors related to both drug use
; and imprisonment.