Stockholm 2011

1 Aims: (1) To compare the prevalence of adverse outcomes in adulthood between a clinic cohort and a matched sample from the general population; (2) To examine the associations between adolescent antisocial behaviour and adverse outcomes in adulthood; (3) To identify subgroups of male and female offenders with distinct features of offending, and to examine the long-term continuity of offending in the subgroups, and; (4) To identify long-term offending trajectories and examine the relationship between these offending trajectories and concurrent problems in other areas. Method: Participants were part of a longitudinal study of adolescents who were treated at a substance misuse clinic during two periods: 1968-1971 (Cohort 1; 1992 participants), and 1980-1984 (Cohort 2; 1576 participants). The same number of individuals were randomly selected from the general population and matched to the clinic cohorts. Baseline data was extracted from archival data, and participants wer