Individuals who self-harm may have an increased risk of aggression toward others, but this association has been insufficiently investigated. More conclusive evidence may affect assessment, treatment interventions, and clinical guidelines.
To investigate the association between nonfatal self-harm and violent crime.
This population-based longitudinal cohort study, conducted from January 1, 1997, through December 31, 2013, studied all Swedish citizens born between 1982 and 1998 who were 15 years and older (N?=?1?850?252). Individuals who emigrated from Sweden before the age of 15 years (n?=?104?051) or immigrated to Sweden after the age of 13 years (ie,