Table 1 provides descriptive information for each outcome according to self harm at age 16 years. For mental health outcomes, future self harm, and substance use there was evidence of a dose-response relation with lifetime self harm at age 16 years; the prevalence of each outcome was highest among participants who had self harmed with suicidal intent, lowest among those with no history of self harm, and approximately midway between the two for those who had self harmed without suicidal intent. Poorer educational achievement was also most prevalent among those with suicidal self harm, although educational outcomes seem to have been slightly better among those with non-suicidal self harm than among those who had never self harmed. The prevalence of NEET was similar among those with no self harm and with non-suicidal self harm, but higher among those with suicidal self harm.
