title: Risk factors for suicide in Japan: a model of predicting suicide in 2008 by risk factors of 2007.
abstract: BACKGROUND
  This study aims to comprehensively investigate the causal relationship between suicide and its risk factors in a longitudinal design.
  
  
  METHODS
  A model was derived in which suicide rate in 2008 was longitudinally and comprehensively predicted by potential risk factors recorded one year before (2007) which included personal and interpersonal factors, medical factors, economic factors, climate factors, alcoholic factors, and ω-3 fatty-acid factors.
  
  
  RESULTS
  In males, elderly population rate and complete unemployment rate predicted SMR of suicide significantly and positively whereas marriage rate and annual postal savings per person predicted SMR of suicide significantly and negatively. Also in females, complete unemployment rate predicted SMR of suicide significantly and positively whereas annual mean temperature predicted SMR of suicide significantly and negatively.
  
  
  CONCLUSIONS
  The limitations of this study are that predictions are based on the data of only the recent two years, that these epidemiological data cannot be always extrapolated to individuals, and that other factors should be taken into consideration to female suicide.
  
  
  CONCLUSIONS
  The present findings suggest that male suicide may be accounted for by older age, more complete employment rate, less marriage rate and less annual postal savings whereas female suicide may be accounted for by more complete employment rate and lower annual mean temperature.
authors.affiliation: Department of Neuropsychiatry, Oita University Faculty of Medicine, Oita, Japan.
authors.forename: Nobuyoshi
authors.initials: N
authors.lastname: Ishii
authors.forename: Takeshi
authors.initials: T
authors.lastname: Terao
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Araki
authors.forename: Kentaro
authors.initials: K
authors.lastname: Kohno
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Mizokami
authors.forename: Masano
authors.initials: M
authors.lastname: Arasaki
authors.forename: Noboru
authors.initials: N
authors.lastname: Iwata
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D003080:Cold Temperature; D005260:Female; D006801:Humans; D007182:Income; D007564:Japan / Q000453:epidemiology; D008297:Male; D017533:Marital Status; D008960:Models, Psychological; D012307:Risk Factors; D012737:Sex Factors; D013405:Suicide / Q000706:statistics & numerical data*; D014478:Unemployment / Q000523:psychology