Problems in studying suicide.
Suicide is distinct from suicide attempt, in terms of male predominance (2:1), presence of serious psychiatric morbidity, and in the choice of rapidly effective means which will not be interrupted. However 1 per cent per year, and 10 per cent overall, of those attempting will progress to completed suicide. Communication of intent is the most significant and frequent danger signal of suicide, and the attempt may be such a communication. Useful prognostic features of the attempt are the medical seriousness of the act (overdose accounts for 90 per cent of attempts, and only 25 per cent of suicides), and the psychiatric seriousness of the patient's mental state. Suicide in the absence of psychiatric illness is rare. Depression is the most common associated illness, and whereas the distinction between major and minor is probably not prognostically significant, the presence of current depression is. The lifetime risk of suicide in depressive illness is 15 per cent. The second largest contributor is alcoholism, in particular alcoholics who have experienced loss of a close personal relationship. Other significant psychiatric diagnoses include schizophrenia, organic brain syndrome and personality disorder. Suicide rates differ internationally, but the identification of significant socio-cultural risk factors is hampered by the official differences in ascertainment which exist. Although suicide rates increase with each decade of life, there has been a steady recent rise in suicide rates in many countries, which has been occurring disproportionately among the group aged 15-34.
D000437:Alcoholism / Q000523:psychology; D003431:Cross-Cultural Comparison; D003866:Depressive Disorder / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D012306:Risk; D012537:Scandinavian and Nordic Countries; D013405:Suicide / Q000453:epidemiology / Q000523:psychology*; D013406:Suicide, Attempted / Q000453:epidemiology / Q000523:psychology; D006113:United Kingdom; D014481:United States