New Factors Linked to Suicide Discovered

by Colleen Fleiss on  December 11, 2019 at 12:58 AM Research News
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In men, physical illness and injury was found to increase the risk of suicide, revealed study led by Boston University School of Public Health (BUSPH) researchers.
New Factors Linked to Suicide Discovered
New Factors Linked to Suicide Discovered

The study, published in JAMA Psychiatry, is the first to use data from the population of an entire country (Denmark) and parse it with a machine-learning system to identify suicide risk factors.

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Denmark has a national healthcare system with the entire population's healthcare information compiled in government registries. This allowed Dr. Gradus and her colleagues to look at thousands of factors in the health histories of all 14,103 individuals who died from suicide in the country from 1995 through 2015, and the health histories of 265,183 other Danes in the same period, using a machine-learning system to look for patterns.

Many of the study's findings confirmed previously-identified risk factors, such as psychiatric disorders and related prescriptions. The researchers also found new potential risk patterns, including that diagnoses and prescriptions four years before a suicide were more important to prediction than diagnoses and prescriptions six months before, and that physical health diagnoses were particularly important to men's suicide prediction but not women's.

The findings of this study do not create a model for perfectly predicting suicide, Dr. Gradus says, in part because medical records rarely include the more immediate experiences--such as the loss of a job or relationship--that combine with these longer-term factors to precipitate suicide. Risk factors and patterns may also be different outside of Denmark.

Still, after decades of research with little reduction in suicide rates, Dr. Gradus says the findings point to new factors to examine in working to prevent this persistent public health issue.

Source: Eurekalert

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