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Gender Differences in Age, Period, and Birth-Cohort Effect on Suicide Mortality Rate in Japan 1985-2006

^* To whom correspondence should be addressed. E-mail: odagiri{at}yamanashi-ken.ac.jp.

	Abstract

Because suicide is increasingly becoming a public health threat in Japan, it is necessary to identify high-risk groups to develop effective preventive measures. The suicide mortality trends from 1985 to 2006 for Japanese aged between 15 and 79 years were analyzed by a Bayesian age–period–cohort analysis to evaluate the independent effects of age, period, and birth cohort. Agespecific effect showed an overall increase with age in both genders, but a distinct increase was noted only among men aged between 50 and 64 years. The period effect exhibited a sudden rise in 1998; this effect was more apparent in men than in women. The cohort-specific effect increased in male birth cohorts born after 1926 and in female birth cohorts born after 1956. In conclusion, a gender difference was detected in the effects of age, period, and cohort on suicide risk among Japanese.

First published on October 26, 2009
Asia-Pacific Journal of Public Health 2009, doi:10.1177/1010539509348242


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