Baseline characteristicsa n = 74
Sociodemographic characteristics  
Male sex 65 (88%)
Age – years 43 [7]
Belgian 62 (84%)
Employed during previous month 2 (3%)
Social or medical welfare as main source of income 58 (78%)
No stable housing in past month 21 (28%)
Criminal involvement ("during life)  
Ever convicted 72 (97%)
Ever condemned 56 (76%)
Ever incarcerated 47 (64%)
Criminal involvementb 74 (100%)
Illegal activitiesb 72 (97%)
-     Assaults 29 (39%)
-     Acquisitive crimes (thefts, selling illicit drugs, forgery/fraud, fencing or prostitution) 72 (97%)
Victimisationb 72 (97%)
-     Assaults and sexual abuse 47 (64%)
-     Acquisitive crimes (thefts or deceit while dealing) 72 (97%)
Drug use  
Regular street heroin use – years 20 [7]
Street heroin in past month – days 27 [5]
Cocaine in past monthb 34 (46%)
Ever injected 60 (81%)
Habitual use of street heroin through injection 12 (16%)
Previous addiction treatment  
Regular methadone use – years 14 [7]
Number of previous drug treatments 9 [13]
aData are number of participants (%) or mean [s.d.]
dSelf-reported data complemented with toxicological analysis or registered criminal proceedings
Table 1: Baseline characteristics of the 74 participants randomised in TADAM trial.