Risk factors for nonfatal self‐harm and suicide among adolescents: two nested case–control studies conducted in the UK Clinical Practice Research Datalink

Background The characteristics of adolescents who die by suicide have hitherto been examined in uncontrolled study designs, thereby precluding examination of risk factors. The degree to which antecedents of nonfatal self‐harm and suicide at young age differ remains unknown. Method We delineated two nested case–control studies of patients aged 10–19 years using the Clinical Practice Research Datalink with interlinked hospital and national...