Figure 1.

Sample flow for (a) population cohort, (b) reasons for exclusions and the number of cases excluded, (c) the complete-case cohort, (d) estimation samples by type of individuals included in the specific model. Depending on outcome, year of birth restrictions to address age of diagnosis (at least 2, 12 or 15) or conviction were applied during analysis at this step. In particular, ASD and ADHD 1987–2007; severe mental illness, suicide attempt, substance-use problem, failing grades 1973–97; and criminality 1973–94. Follow-up for all outcomes was through 2009.