Mental Disorders in Suicide and Undetermined Death in the Lundby Study. The Contribution of Severe Depression and Alcohol Dependence

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Abstract
To evaluate the role of severe depression, i.e., depression with melancholic and/or psychotic features and alcohol dependence in suicide and undetermined death. The Lundby Study is a prospective, longitudinal study of a population consisting of 3563 subjects. In a long-term follow up 1947–2006 there were 66 suicide cases, including 19 undetermined deaths. Depression and alcoholism were as expected the major contributors to suicide (44% and 23% respectively). Severe depression with psychotic and/or melancholic features was diagnosed in 66% of all depressions and in 29% of all suicide cases, as compared to 15% for major depression only. Alcohol dependence was related to undetermined death. Major depressive disorder with melancholic and/or psychotic features appears to be an important contributor to accomplished suicide in the depression group, and alcohol dependence appears to be related to undetermined death.

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