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. 2010 Sep-Oct;125(5):680-8.
doi: 10.1177/003335491012500510.

Understanding recent changes in suicide rates among the middle-aged: period or cohort effects?

Julie A Phillips  1 , Ashley V Robin, Colleen N Nugent, Ellen L Idler
Affiliations

Understanding recent changes in suicide rates among the middle-aged: period or cohort effects?

Julie A Phillips et al. Public Health Rep. 2010 Sep-Oct.

Abstract

Objective: We examined trends in suicide rates for U.S. residents aged 40 to 59 years from 1979 to 2005 and explored alternative explanations for the notable increase in such deaths from 1999 to 2005.

Methods: We obtained information on suicide deaths from the National Center for Health Statistics and population data from the U.S. Census Bureau. Age- and gender-specific suicide rates were computed and trends therein analyzed using linear regression techniques.

Results: Following a period of stability or decline, suicide rates have climbed since 1988 for males aged 40-49 years, and since 1999 for females aged 40-59 years and males aged 50-59 years. A crossover in rates for 40- to 49-year-old vs. 50- to 59-year-old males and females occurred in the early 1990s, and the younger groups now have higher suicide rates. The post-1999 increase has been particularly dramatic for those who are unmarried and those without a college degree.

Conclusions: The timing of the post-1999 increase coincides with the complete replacement of the U.S. population's middle-age strata by the postwar baby boom cohorts, whose youngest members turned 40 years of age by 2005. These cohorts, born between 1945 and 1964, also had notably high suicide rates during their adolescent years. Cohort replacement may explain the crossover in rates among the younger and older middle-aged groups. However, there is evidence for a period effect operating between 1999 and 2005, one that was apparently specific to less-protected members of the baby boom cohort.

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Figures

Figure 1.
Figure 1.
U.S. suicide rates by gender and age group, 1979–2005a
Figure 2a.
Figure 2a.
Age-specific suicide rates for men by birth cohort: U.S., 1935–1964a
Figure 2b.
Figure 2b.
Age-specific suicide rates for women by birth cohort: U.S., 1935–1964a
See this image and copyright information in PMC

References

    1. Associated Press. Suicide on the rise for middle-aged Americans: rates for adults ages 45–54 climbed to highest level in 25 years, CDC finds. 2007. Dec 14, [cited 2009 Jun 30]. Available from: URL: http://www.msnbc.com/id/22258413.
    1. Cohen P. Midlife suicide rises, puzzling researchers. New York Times. 2008. Feb 19, [cited 2009 Jun 30]. Sect. A:1, 20. Also available from: URL: http://www.nytimes.com/2008/02/19/us/19suicide.html.
    1. Reinberg S. Suicide rates rise among baby boomers: middle-aged white women at increasing risk, study finds. U.S. News and World Report. 2008. Oct 21,
    1. Increases in age-group-specific injury mortality—United States, 1999–2004. MMWR Morb Mortal Wkly Rep. 2007;56(49):1281–4. - PubMed
    1. eFluxMedia. U.S. suicide rates rise for white, middle-aged men and women. 2008. Oct 21, [cited 2009 Jun 30]. Available from: URL: http://www.efluxmedia.com/news_USU_Suicide_Rate_Rise_For_White_Middle-ag....