We conducted prospective cohort study to investigate whether the impact of the economic crisis in 1997-1998 upon suicide risk differed according to Neuroticism and Psychoticism personality traits. The Miyagi Cohort Study in Japan with a follow-up for 19 years from 1990 to 2008 has 29,432 subjects aged 40-64 years at baseline who completed a questionnaire about various health habits and the Japanese version of the Eysenck Personality Questionnaire - Revised Short Form in 1990. The suicide mortality rate increased from 4.6 per 100,000 person-years before 1998 to 27.8 after 1998. Although both Neuroticism and Psychoticism were significantly associated with an increased risk of mortality during the whole period from 1990 to 2008, the impact of the economic crisis upon suicide risk differed between the Neuroticism and Psychoticism personality traits. Compared with the lowest category, the hazard ratios (HRs) for the highest Neuroticism increased from 0.66 before 1998 to 2.45 after 1998. On the other hand, the HRs for the highest Psychoticism decreased from 7.85 before 1998 to 2.05 after 1998. (宮城県コホート研究のデータからパーソナリティと自殺リスクの関連について解析した。その結果、経済危機以前の自殺者数は10件、経済危機以降の自殺者数は80件で８倍の増加がみられた。パーソナリティと自殺リスクの関連では、神経症傾向・非協調性が高い者ほど自殺リスクが高いことが示唆された。さらに、神経症傾向が高い者でのみ経済危機を境に自殺リスクが増加することが示唆された。)
p. 559-73
Tanji F, Kakizaki M, Sugawara Y, Watanabe I, Nakaya N, Minami Y, Fukao A, Tsuji I.
