Relative age in school and suicide among young individuals in Japan: A regression discontinuity approach

Tetsuya Matsubayashi, Michiko Ueda

研究成果: Article

9 引用 (Scopus)

抄録

Objective Evidence collected in many parts of the world suggests that, compared to older students, students who are relatively younger at school entry tend to have worse academic performance and lower levels of income. This study examined how relative age in a grade affects suicide rates of adolescents and young adults between 15 and 25 years of age using data from Japan. Method We examined individual death records in the Vital Statistics of Japan from 1989 to 2010. In contrast to other countries, late entry to primary school is not allowed in Japan. We took advantage of the school entry cutoff date to implement a regression discontinuity (RD) design, assuming that the timing of births around the school entry cutoff date was randomly determined and therefore that individuals who were born just before and after the cutoff date have similar baseline characteristics. Results We found that those who were born right before the school cutoff day and thus youngest in their cohort have higher mortality rates by suicide, compared to their peers who were born right after the cutoff date and thus older. We also found that those with relative age disadvantage tend to follow a different career path than those with relative age advantage, which may explain their higher suicide mortality rates. Conclusion Relative age effects have broader consequences than was previously supposed. This study suggests that policy intervention that alleviates the relative age effect can be important.

元の言語English
記事番号0135349
ジャーナルPLoS One
10
発行部数8
DOI
出版物ステータスPublished - 2015 8 26
外部発表Yes

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suicide
Suicide
Japan
Students
Statistics
students
Vital Statistics
Death Certificates
Mortality
academic achievement
elementary schools
peers
Young Adult
young adults
Parturition
income
demographic statistics
death

ASJC Scopus subject areas

  • Medicine(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

これを引用

Relative age in school and suicide among young individuals in Japan : A regression discontinuity approach. / Matsubayashi, Tetsuya; Ueda, Michiko.

:: PLoS One, 巻 10, 番号 8, 0135349, 26.08.2015.

研究成果: Article

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