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This case-control psychological autopsy study explored suicide risk factors among Japanese individuals. We targeted 102 suicide completers over 20 years of age and 334 living controls matched to suicide cases by gender, age, and residential municipality in Japan. After controlling for other factors, we found significant associations between suicide and mental disorders, sleeping problems, and verbal communication of one's own death. We discuss the importance of sensitive responses to verbal expressions of suicidal ideation., (Copyright © 2017 Elsevier B.V. All rights reserved.)

Aim: Although the female suicide rate in Japan is one of the highest among OECD countries, little has been done to assess the psychosocial and psychiatric characteristics of Japanese female suicide completers. This study aimed to examine sex differences in psychosocial and psychiatric characteristics of suicide completers using a psychological autopsy study method, and to identify female suicide factors and intervention points to prevent female suicides., Methods: A semi-structured interview was conducted with close family members of adult suicide completers. The interview included questions regarding sociodemographic factors, suicide characteristics, previous suicidal behaviors and a family history of suicidal behaviors, financial problems, and physical/psychiatric problems. Fisher's exact test and the Student's t-test were used to explore sex differences in these survey items, and individual descriptive information of female suicide cases was also examined., Results: Of the 92 suicide completers, 28 were female and 64 were male. Females had a significantly higher prevalence of a history of self-harm/suicide attempts (P < 0.001). The prevalence of eating disorders was significantly higher among females than males (P < 0.01)., Conclusion: The findings of this study highlight the importance of providing psychological and social support to caregivers of those who repeatedly attempt suicide and express suicidal thoughts, and to suggest the need to improve community care systems to be aware of suicide risk factors among female suicide attempters., (© 2016 The Authors. Psychiatry and Clinical Neurosciences © 2016 Japanese Society of Psychiatry and Neurology.)

Background: Previous research has produced conflicting findings concerning whether birthdays are associated with an increased risk of suicide. This study examined the association in Tokyo, Japan., Methods: Suicide data (ICD-10 codes X60-X84) for the period 2001-2010 were obtained from the Japanese Ministry of Health, Labour and Welfare. A time-stratified case-crossover design was used with conditional logistic regression analysis being performed to estimate within-subject 'birthday exposures' while controlling for meteorological conditions and public holidays., Results: There were 27,007 suicides in the study period. For males the 5 days before the birthday and the week after the birthday were associated with significantly higher odds for suicide with the odds ratio being highest on the actual birthday (OR =1.677, 95% CI: 1.294, 2.172). For females, significantly higher odds for completed suicide were observed 7-11 days before the birthday. Stratified analyses showed different at risk time patterns among men from different age groups, and that married men had higher odds for suicide on, and for the 4 days before and in the 2 weeks after their birthday., Limitations: We lacked detailed information on suicides which would have enabled a better understanding of the observed associations., Conclusions: Birthdays are associated with an increased risk for suicide in Tokyo, Japan. Health professionals who work with individuals at risk of suicide should be made aware that birthdays are associated with an elevated suicide risk. This information should also be communicated in wider suicide prevention campaigns., (Copyright © 2016 Elsevier B.V. All rights reserved.)

Objective: This case-control psychological autopsy study aimed to explore a relationship between sleep disturbances and suicide among Japanese, as well as determine the importance and usability of screening for sleep disturbances in suicide prevention., Methods: A semi-structured interview was conducted with the close family members of 49 adult suicide completers and 145 gender-, age-, and residential municipality-matched living controls. The survey included sections on demographics, sleep disturbances, and mental disorders. Conditional logistic regression analyses were performed to compare sleep disturbance prevalence between the two groups., Results: A significantly higher prevalence of sleep disturbances was found among the suicide group (75.5%) compared to the controls (11.0%) (odds ratio [OR]=21.6, p<0.001). The association remained significant after adjusting for mental disorders (OR=12.7, p<0.001). The population attributable risk percent of suicide associated with sleep disturbances and mental disorders was estimated to be 56.4% and 35.3%, respectively., Conclusions: The study confirmed that sleep disturbances are an important risk factor of suicide, independent of mental disorders. Sleep disturbances accounted for a greater proportion of suicide cases than did mental disorders in the Japanese population given the higher prevalence, and could thus be considered an important target in suicide prevention in Japan., (Copyright © 2014 Elsevier B.V. All rights reserved.)

Background: Social workers are expected to play important roles in suicide intervention. Caregiving behaviours of medical personnel to suicidal individuals have been reported to be influenced by their own attitudes toward suicide. In this context, only a limited number of studies have examined social workers' attitudes toward suicide., Aim: The purpose of this study was to explore associations between personal or occupational factors of social workers and their attitudes toward suicide., Methods: A self-administered questionnaire was mailed to 2,999 study participants registered with the Tokyo chapter of the Japanese Association of Certified Social Workers. We adopted the Attitudes Toward Suicide Scale (ATTS) to measure attitudes toward suicide. MANCOVA was used to test for the effects of demographic, personal and occupational factors on ATTS sub-scale scores., Results: Participants with a history of suicidal thoughts had stronger attitudes regarding the right to suicide than those with no history; these attitudes were not affected by a history of participating in suicide-prevention training., Conclusions: Our findings suggest that suicide education should incorporate programmes directed at altering permissive attitudes toward suicide.

Background: Studies on attitudes toward suicide are of great interest to researchers worldwide. Although various instruments have been developed to measure attitudes toward suicide, psychometric properties of these instruments have not been systematically reviewed and organized., Aim: We aimed to identify valid, reliable and feasible attitudinal scales by systematically reviewing published articles on scale development and validation studies. In particular, this study focused on scales used for a wide range of populations to measure multidimensional attitudes toward suicide and related issues., Methods: Electronic searches of two databases, PubMed and PsychInfo, were performed. Scales with unique names were identified and listed after reviewing selected publications, and then evaluated for psychometric properties, multidimensionality and appropriateness for a wide range of populations., Results: A total of 2,210 publications were identified by the first electronic search. In the final review process of the selected publications, three scales - the Suicide Opinion Questionnaire (SOQ), Suicide Attitude Questionnaire (SUIATT) and Attitudes Toward Suicide (ATTS) - were identified., Conclusion: Each of these scales has its own characteristics and should be used in accordance with research purposes.

This study explored the current implementation status of and opinions and concerns regarding suicide education at schools of social work in Japan. We conducted a survey of faculty members who taught at least one of the social work subjects. About half the respondents had given a lecture of some kind on suicide, and more than 80% agreed that suicide is an important topic to include in social work program curricula. However, more than half indicated they did not have enough knowledge or skills to teach students about suicide, and more than 60% were concerned about adverse psychological effects of suicide education on students. Our findings highlight the importance of providing faculty members with guidelines for teaching students about suicide.

This study explored the current implementation status of and opinions and concerns regarding suicide education at schools of social work in Japan. We conducted a survey of faculty members who taught at least one of the social work subjects. About half the respondents had given a lecture of some kind on suicide, and more than 80% agreed that suicide is an important topic to include in social work program curricula. However, more than half indicated they did not have enough knowledge or skills to teach students about suicide, and more than 60% were concerned about adverse psychological effects of suicide education on students. Our findings highlight the importance of providing faculty members with guidelines for teaching students about suicide. [ABSTRACT FROM AUTHOR]