Background
The overall suicide rate in the U.S. increased by 6% between 1981 and 1986 and declined
by 18% between 1986 and 1999. Detailed descriptions of recent trends in suicide are
lacking, especially with regard to the method of suicide. Information is needed on
the major changes in rates of suicide in specific population groups in recent years
(1999–2005).
Methods
Mortality data came from the Web-based Injury Statistics Query and Reporting System.
Suicide trends during 1981–2005 were analyzed by age, race, gender, and method, with
an emphasis on increases between 1999 and 2005. Linear regression was used to examine
the significance of trends in suicide mortality. The annual percentage change in rates
was employed to measure the linear trend in suicide mortality.
Results
The suicide rate increased after 1999, due primarily to an increase in suicide among
whites aged 40–64 years, whose rate of completed suicide between 1999 and 2005 rose
by 2.7% annually for men and by 3.9% annually for women, with increases of 6.3% and
2.3% for hanging/suffocation, 2.8% and 19.3% for poisoning, and 1.5% and 1.9% for
firearms for men and women, respectively. Rates did not increase for other age or
racial groups.
Conclusions
The differential increases by age, race, gender, and method underscore a change in
the epidemiology of suicide. Whites aged 40–64 years have recently emerged as a new
high-risk group for suicide. Although firearms remain the most common method of suicide,
the notable increases in suicide by hanging/suffocation in men and by poisoning in
women deserve preventive attention.
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© 2008 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.
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