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Men VY, Chan PPM, Schaffer A, Sanchez Morales D, Steinberg R, Mitchell RH, Sinyor M. Suicide by different methods in Toronto: A quantitative study examining of 23-years of coronial records. J Affect Disord 2024; 366:283-289. [PMID: 39187206 DOI: 10.1016/j.jad.2024.08.163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 08/12/2024] [Accepted: 08/23/2024] [Indexed: 08/28/2024]
Abstract
The objective of the study is to understand the characteristics of people who died by different suicide methods in Toronto, Canada. Suicide cases were identified by the Office of the Chief Coroner of Ontario (1998-2020). Demographic and clinical variables were retrieved. All suicide deaths were classified into different groups based on suicide method. Bivariate analyses and multinomial logistic regressions were performed to compare their demographic and clinical characteristics. Hanging (N = 1721), jumping from height (N = 1280), and poisoning (N = 955) were the most common suicide methods in Toronto. Those who died by hanging were more likely to be married or in common law relationships, live with others, experience employment/financial/academic-related stressors and die at home. People who died by jumping from height had a higher likelihood of having a psychiatric and/or emergency department visit in the past week and having schizophrenia or related disorders/symptoms. People who died by poisoning had higher odds of being female and leaving suicide notes. They were also more likely to have previous suicide attempts, experience depression and/or bipolar disorder and have physical conditions. Specific suicide prevention strategies should be designed and implemented to account both for commonalities and differences among people who die by different suicide methods.
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Affiliation(s)
- Vera Yu Men
- Department of Psychiatry, Sunnybrook Health Sciences Centre, Toronto, Canada; Department of Psychiatry, University of Toronto, Toronto, Canada
| | | | - Ayal Schaffer
- Department of Psychiatry, Sunnybrook Health Sciences Centre, Toronto, Canada; Department of Psychiatry, University of Toronto, Toronto, Canada
| | | | - Rosalie Steinberg
- Department of Psychiatry, Sunnybrook Health Sciences Centre, Toronto, Canada; Department of Psychiatry, University of Toronto, Toronto, Canada
| | - Rachel Hana Mitchell
- Department of Psychiatry, Sunnybrook Health Sciences Centre, Toronto, Canada; Department of Psychiatry, University of Toronto, Toronto, Canada
| | - Mark Sinyor
- Department of Psychiatry, Sunnybrook Health Sciences Centre, Toronto, Canada; Department of Psychiatry, University of Toronto, Toronto, Canada.
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Lee YJ, Kweon YS, Kang YH, Yoon KH, Lee MS, Bhang SY, Hong HJ. Suicide warning signs that are challenging to recognize: a psychological autopsy study of Korean adolescents. Child Adolesc Psychiatry Ment Health 2024; 18:41. [PMID: 38528559 DOI: 10.1186/s13034-024-00731-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 03/12/2024] [Indexed: 03/27/2024] Open
Abstract
BACKGROUND In South Korea, the leading cause of youth death has been suicide for about 20 years. In this study, we conducted a multi-method psychological autopsy to identify the psychiatric diagnosis, developmental history, personality traits, family history, school life, warning signs of suicide, and risk factors related to suicide for the first time in Korea. METHODS This was a postmortem, retrospective, and descriptive study of 36 adolescents who died by suicide between August 2015 and July 2021 in South Korea. We obtained qualitative and quantitative data from the Korean Psychological Autopsy of Adolescent, conducted by the Suicide and School Mental Health Institute, the official student mental health policy-focused research institute of the Korean Ministry of Education. RESULTS The adolescents comprised equal percentage of girls and boys. Approximately half of the deaths (55.6%) occurred at home and most (72.2%) involved jumping from a height. Most of the adolescents (97.2%) had one major psychiatric disorder before death, with depressive disorder being the most prevalent (75%). They were at a high risk for internet addiction before death. The most common personality trait was avoidance (28.6%), followed by submissiveness (27.3%). Half of the parents reported that the adolescents were satisfied with their school life and the teachers observed that they had no behavioral problems. One year before death, seven (19.4%) adolescents injured themselves and five (13.9%) had attempted suicide. Most of the deceased (80.6%) had expressed suicide warning signs to their families within one year before death. Adolescents had a long experience of family-related adverse events. CONCLUSIONS Most of the adolescents had mental health disorders and expressed suicidal intentions using verbal and nonverbal signs. However, it was challenging for families to recognize the risk signs because of adolescents' personality traits or a good school life. To prevent adolescent suicide, adolescents, parents, and teachers need to be educated to recognize signs of suicide warning signs and equipped to guide adolescents to appropriate care.
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Affiliation(s)
- Yeon Jung Lee
- Department of Psychiatry, College of Medicine, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea
| | - Yong-Sil Kweon
- Department of Psychiatry, College of Medicine, The Catholic University, Seoul, Republic of Korea
| | | | - Kyung Hee Yoon
- School Mental Health Resources and Research Center, Seoul, Republic of Korea
| | - Mi-Sun Lee
- Department of Preventive Medicine, College of Medicine, The Catholic University, Seoul, Republic of Korea
| | - Soo-Young Bhang
- Department of Psychiatry, Nowon Eulji University Hospital, Eulji University School of Medicine, Seoul, Republic of Korea
- Eulji Psychiatry and Medical Science Center, Eulji University, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Hyun Ju Hong
- Suicide and School Mental Health Institute, Anyang, Republic of Korea.
- Department of Psychiatry, Hallym University Sacred Heart Hospital, 22 Gwanpyeong-ro 170 beon-gil, Dongan-gu, Anyang, 14068, Republic of Korea.
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Kort I, Hmandi O, Grayaa M, Bellali M, Kouada R, Gharbaoui M, Zhioua M, Allouche M. A comparative study of the injury pattern between suicidal and accidental falls from height in Northern Tunisia. J Forensic Leg Med 2023; 97:102531. [PMID: 37210812 DOI: 10.1016/j.jflm.2023.102531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/24/2023] [Accepted: 04/29/2023] [Indexed: 05/23/2023]
Abstract
BACKGROUND Falls from height are a common cause of marbidity and mortality. The aim of this study is to examine the characteristics of the victims, the circumstances of the fall and distribution of the injuries of accidental and suicidal falls from height. MATERIALS AND METHODS It was a retrospective cross-sectional study, based on autopsies performed over 16 years (January 2005 to December 2020). The recorded variables included demographic data of the victim, height of fall, death scene findings, length of hospital stay, autopsy findings, and toxicological results. RESULTS Of the 753 victims of fall from height, 607 were fallers and 146 were jumpers. We found that male victims were predominant in the accidental group (86.8% vs. 69.2%). The mean age at death was 43.6 ± 17.9 years. Suicidal falls occurred in a private house in the majority of cases (70.5%), while accidental falls occurred most frequently at workplace (43.8%). Suicidal falls were higher than accidental falls (10.4 ± 7.3 m vs. 7.1 ± 5.7 m). Injuries in the thorax, abdomen, pelvis, upper and lower extremities were more frequentl in the suicidal falls group. Pelvic fractures were 2.1 times more likely to occur in the suicidal falls. Head injuries were more frequent in the accidental falls group. The survival delay was shorter in the suicidal falls group. CONCLUSIONS our study highlights the differences in the profile of the victims and in the pattern of injuries caused by falls from height, depending on the victim's intention to fall.
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Affiliation(s)
- Ikram Kort
- Department of Forensic Medicine, Charles Nicolle University Hospital, Tunis, Tunisia.
| | - Ons Hmandi
- Department of Forensic Medicine, Charles Nicolle University Hospital, Tunis, Tunisia; Faculty of Medicine, University of Tunis El Manar, Tunis, Tunisia.
| | - Mariem Grayaa
- Department of Forensic Medicine, Charles Nicolle University Hospital, Tunis, Tunisia.
| | - Mohamed Bellali
- Department of Forensic Medicine, Charles Nicolle University Hospital, Tunis, Tunisia; Faculty of Medicine, University of Tunis El Manar, Tunis, Tunisia.
| | - Rihem Kouada
- Department of Forensic Medicine, Charles Nicolle University Hospital, Tunis, Tunisia.
| | - Meriem Gharbaoui
- Department of Forensic Medicine, Charles Nicolle University Hospital, Tunis, Tunisia; Faculty of Medicine, University of Tunis El Manar, Tunis, Tunisia.
| | - Mongi Zhioua
- Department of Forensic Medicine, Charles Nicolle University Hospital, Tunis, Tunisia; Faculty of Medicine, University of Tunis El Manar, Tunis, Tunisia.
| | - Mohamed Allouche
- Department of Forensic Medicine, Charles Nicolle University Hospital, Tunis, Tunisia; Faculty of Medicine, University of Tunis El Manar, Tunis, Tunisia.
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Ossei PPS, Niako N, Ayibor WG, Asante E, Safo FK, Safowaa A. Profile of suicide within the northern part of Ghana: A decade under review. S Afr J Psychiatr 2022; 28:1620. [PMID: 35169506 PMCID: PMC8831920 DOI: 10.4102/sajpsychiatry.v28i0.1620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 07/28/2021] [Indexed: 12/03/2022] Open
Abstract
Background Several reports show that suicide is the second and third leading cause of untimely death in young people below the age of 30. Little, however, is known about the profile and trend of suicide in this country due to lack of systematic studies and a lack of national statistics on suicide. This study seeks to examine the profile and pattern of suicide cases recorded within northern Ghana for the past decade. Aim This study aimed to report the prevalence of suicide as an independent cause of death; the choice of suicide method and the alleged reasons for suicide within the northern part of Ghana. Setting Retrospective review of coroners’ reports within the northern part of Ghana. Method In this descriptive study, 309 completed suicides as archived by the office of the coroner were examined. The coroners’ reports of 309 individuals, whose deaths received a suicide verdict or an open verdict in which the cause of death was likely to be suicide from 2008 to 2017, were examined. Student’s t-test was used to ascertain significant age differences between the genders involved. Results Amongst the 309 decedents examined, approximately, 61% were male, with ages ranging from 5 to 81 years. Hanging and poisoning were the most commonly used methods to complete suicide accounting for 124 (40.1%) and 102 (33.0%) deaths, respectively. Regarding the reasons for completed suicide, 78 (25.2%) were because of unknown reasons and 66 (21.4%) were because of social stigma. There was a notable decline in the prevalence of suicide from 2014 to 2017 compared with the years from 2010 to 2013. Conclusion Suicide was highest in the 30–39 year age group with hanging and poisoning being the most common method employed. Stigmatisation and psychosocial problems arising from chronic illness and economic hardship were significant triggers of suicide amongst the suicide decedents in the northern part of Ghana.
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Affiliation(s)
- Paul P S Ossei
- Department of Pathology, KSMD, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
- Department of Pathology, Komfo Anokye Teaching Hospital, Kumasi, Ghana
| | - Nicholas Niako
- Department of Pathology, KSMD, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
- Department of Pathology, Komfo Anokye Teaching Hospital, Kumasi, Ghana
| | - William G Ayibor
- Department of Molecular Medicine, KSMD, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Emmanuel Asante
- Department of Pathology, KSMD, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
- Department of Pathology, Komfo Anokye Teaching Hospital, Kumasi, Ghana
| | - Foster K Safo
- Department of Pathology, KSMD, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
- Department of Pathology, Komfo Anokye Teaching Hospital, Kumasi, Ghana
| | - Adwoa Safowaa
- Department of Epidemiology and Biostatistics, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
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Intentional Fallers with Complex Pelvic and Acetabular Fractures Do Not Have worse Radiological and Functional Outcomes than Accidental Fallers. BIOMED RESEARCH INTERNATIONAL 2022; 2022:8292345. [PMID: 35047640 PMCID: PMC8763494 DOI: 10.1155/2022/8292345] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 12/22/2021] [Indexed: 11/21/2022]
Abstract
Individuals who fall from heights of ≥6 m can suffer from complex pelvic and acetabular fractures. The extent to which an intentional fall correlates with prognosis and outcome after osteosynthesis is unclear. Therefore, we aimed to investigate the clinical outcomes of fallers with pelvic and acetabular fractures after osteosynthesis and compare the radiological and functional outcomes between intentional and accidental fallers. We retrospectively reviewed 49 fallers who fell from heights of ≥6 m, developed pelvic and acetabular fractures, survived after resuscitation, and completed surgical treatment between 2014 and 2017. Fallers were divided into intentional and accidental fallers. Sixteen patients were intentional fallers, whereas the rest of the patients were accidental fallers. Psychiatric counseling was provided to each of the intentional fallers during follow-up. All intentional fallers had preexisting mental disorders, and the most common diagnosis was adjustment disorder. The group of intentional fallers predominantly comprised females that had a higher injury and new injury severity scores and longer hospital stays. However, early loss of fixation (<3 months) and functional outcomes (Merle d'Aubigné and Majeed hip scores at 6- and 12-month follow-ups) did not significantly differ between intentional and accidental fallers. We found that intentional fallers with pelvic and acetabular fractures may have more severe combined injuries compared to accidental fallers. However, the radiological and functional outcomes of the intentional fallers after osteosynthesis were not inferior to those of the accidental fallers with the implementation of well-designed surgical protocols and individualized physical and mental rehabilitation programs.
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The contribution of method choice to gender disparity in suicide mortality: A population-based study in Hong Kong and the United States of America. J Affect Disord 2021; 294:17-23. [PMID: 34256181 DOI: 10.1016/j.jad.2021.06.063] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/14/2021] [Accepted: 06/17/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND In most countries, more females than males attempt suicide, yet suicide mortality is typically higher for males. The aim of this study was to investigate how suicide method choice contributed to gender disparity in suicide mortality. METHODS This study used population-based data collected in Hong Kong (HK) and the United States of America (USA) (2007-2014), comprising suicide deaths and medically treated suicide attempts. We calculated suicide rates, suicide act rates, and case fatality rates (CFRs), by gender and suicide method in HK and the USA respectively. Decomposition analysis was used to quantify the contribution of gender differences in method choice and method-specific CFRs to the excess male suicide rates in each region. RESULTS Gender disparity in suicide mortality was mostly driven by gender differences in method used in suicide acts. In HK, gender difference in choosing jumping as the method in suicide acts explained 44.5% of the gender imbalance in suicide rates, whilst in USA, 62.4% of male excess in suicide rates was explained by gender difference in using firearms in suicide acts. LIMITATIONS Cases of suicide attempts in this study were restricted to those severe enough to require medical attention. CONCLUSION Gender-specific suicide method choice largely determined gender patterns in suicide. Our findings highlighted the importance of developing locally tailored suicide prevention strategies targeting commonly used and highly lethal suicide methods. Future research is needed to explore underlying reasons for gender differences in method choice.
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Arafat SMY, Ali SAEZ, Menon V, Hussain F, Ansari DS, Baminiwatta A, Saleem T, Singh R, Varadharajan N, Biyyala D, Kar SK, Khan MM. Suicide methods in South Asia over two decades (2001-2020). Int J Soc Psychiatry 2021; 67:920-934. [PMID: 34027683 DOI: 10.1177/00207640211015700] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Suicide is a global preventable public health problem. About a quarter of all suicides in the world occur in South Asia. As means restriction is an important suicide prevention strategy, gaining knowledge of the common suicide methods and their changing trends in each country and region is crucial. AIMS We aimed to assess the suicide methods in South Asian countries over the last two decades. METHODS A search was performed in PubMed, PubMed Central, Scopus, and Google Scholar with the search terms. Original articles of quantitative studies, published in the English language, from 2001 to 2020, with full-accessible text, that rank different methods of suicide in eight South Asian countries, were included. RESULTS A total of 68 studies were found eligible for review. The Maximum number of studies were found from India (n = 38), followed by Bangladesh (n = 12), Pakistan (n = 9), Sri Lanka (n = 6), and Nepal (n = 3). Hanging (n = 40, 55.8%) and poisoning (n = 24, 35.3%) were the two most common suicide methods reported, in that order. Hanging followed by poisoning were the commonest suicide methods in Bangladesh, India, and Pakistan while in Sri Lanka, poisoning was the preferred method to hanging. There is a decline in suicide by poisoning and an increase in suicide by hanging in Sri Lanka, Bangladesh, and India. Although hanging is still the commonest method in Pakistan, the use of firearms is growing in recent years (2011-2020). CONCLUSIONS There is a steady decline in the incidence of suicides by poisoning following pesticide regulations in South Asian countries. However, there is heterogeneity of study methods, probable under-reporting of suicide, and lack of robust suicide data.
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Affiliation(s)
- S M Yasir Arafat
- Department of Psychiatry, Enam Medical College and Hospital, Savar, Dhaka, Bangladesh
| | | | - Vikas Menon
- Department of Psychiatry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, PY, India
| | - Fahad Hussain
- Department of Pharmacy, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Daniyal Shabbir Ansari
- Department of Critical Care Unit (Anesthesia and ICU), Civil Hospital, Bahawalpur, Pakistan
| | | | - Tamkeen Saleem
- Department of Psychology, International Islamic University, Islamabad, IS, Pakistan
| | - Rakesh Singh
- Department of Community Health Sciences, PatanAcademy of Health Sciences, Lalitpur, BA, Nepal
| | - Natarajan Varadharajan
- Department of Psychiatry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, PY, India
| | - Deepika Biyyala
- Department of Psychiatry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, PY, India
| | - Sujita Kumar Kar
- Department of Psychiatry, King George's Medical University, Lucknow, UP, India
| | - Murad M Khan
- Department of Psychiatry, Aga Khan University, Karachi, SD, Pakistan
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Method-Specific Suicide Mortality Trends in Australian Men from 1978 to 2017. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18094557. [PMID: 33923084 PMCID: PMC8123328 DOI: 10.3390/ijerph18094557] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/13/2021] [Accepted: 04/21/2021] [Indexed: 11/30/2022]
Abstract
In 2017 Australia saw the highest overall suicide rate in the past 10 years, with male suicide rates three times higher than in women. Since the mid-1980s there have been major changes in suicide epidemiology in Australia with large shifts in method of suicide among both men and women. This study examined method-specific suicide trends in Australian men over the past 40 years by state. Suicide mortality data for the period 1978 to 2017 was obtained from the Australian Institute of Health and Welfare (AIHW) National Mortality Database and log-linear Poisson regression analysis was used to analyse suicide mortality. This study found large differences between states in patterns and trends in suicide mortality from 1978 to 2017. Hanging, gas and firearms were the most common methods of suicide in Australia. We found statistically significant increasing trends in hanging suicide among men in all six states. The study findings highlight the growing concern of hanging-related suicide in all states in Australia since the late 1970s. New suicide prevention strategies focusing on the ubiquity and ease of hanging as a method will be needed in order for Australia to reduce suicide mortality in future.
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Wasserman D, Iosue M, Wuestefeld A, Carli V. Adaptation of evidence-based suicide prevention strategies during and after the COVID-19 pandemic. World Psychiatry 2020; 19:294-306. [PMID: 32931107 PMCID: PMC7491639 DOI: 10.1002/wps.20801] [Citation(s) in RCA: 172] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Suicide is preventable. Nevertheless, each year 800,000 people die of suicide in the world. While there is evidence indicating that suicide rates de-crease during times of crises, they are expected to increase once the immediate crisis has passed. The COVID-19 pandemic affects risk and pro-tective factors for suicide at each level of the socio-ecological model. Economic downturn, augmented barriers to accessing health care, increased access to suicidal means, inappropriate media reporting at the societal level; deprioritization of mental health and preventive activities at the community level; interpersonal conflicts, neglect and violence at the relationship level; unemployment, poverty, loneliness and hopelessness at the individual level: all these variables contribute to an increase of depression, anxiety, post-traumatic stress disorder, harmful use of alcohol, substance abuse, and ultimately suicide risk. Suicide should be prevented by strengthening universal strategies directed to the entire population, including mitigation of unemployment, poverty and inequalities; prioritization of access to mental health care; responsible media reporting, with information about available support; prevention of increased alcohol intake; and restriction of access to lethal means of suicide. Selective interventions should continue to target known vulnerable groups who are socio-economically disadvantaged, but also new ones such as first responders and health care staff, and the bereaved by COVID-19 who have been deprived of the final contact with loved ones and funerals. Indicated preventive strategies targeting individuals who display suicidal behaviour should focus on available pharmacological and psychological treatments of mental disorders, ensuring proper follow-up and chain of care by increased use of telemedicine and other digital means. The scientific community, health care professionals, politicians and decision-makers will find in this paper a systematic description of the effects of the pandemic on suicide risk at the society, community, family and individual levels, and an overview of how evidence-based suicide preventive interventions should be adapted. Research is needed to investigate which adaptations are effective and in which con-texts.
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Affiliation(s)
- Danuta Wasserman
- National Centre for Suicide Research and Prevention of Mental Ill-Health, Karolinska Institutet, Stockholm, Sweden
| | - Miriam Iosue
- National Centre for Suicide Research and Prevention of Mental Ill-Health, Karolinska Institutet, Stockholm, Sweden
| | - Anika Wuestefeld
- National Centre for Suicide Research and Prevention of Mental Ill-Health, Karolinska Institutet, Stockholm, Sweden
| | - Vladimir Carli
- National Centre for Suicide Research and Prevention of Mental Ill-Health, Karolinska Institutet, Stockholm, Sweden
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Okolie C, Wood S, Hawton K, Kandalama U, Glendenning AC, Dennis M, Price SF, Lloyd K, John A. Means restriction for the prevention of suicide by jumping. Cochrane Database Syst Rev 2020; 2:CD013543. [PMID: 32092795 PMCID: PMC7039710 DOI: 10.1002/14651858.cd013543] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Jumping from a height is an uncommon but lethal means of suicide. Restricting access to means is an important universal or population-based approach to suicide prevention with clear evidence of its effectiveness. However, the evidence with respect to means restriction for the prevention of suicide by jumping is not well established. OBJECTIVES To evaluate the effectiveness of interventions to restrict the availability of, or access to, means of suicide by jumping. These include the use of physical barriers, fencing or safety nets at frequently-used jumping sites, or restriction of access to these sites, such as by way of road closures. SEARCH METHODS We searched the Cochrane Library, Embase, MEDLINE, PsycINFO, and Web of Science to May 2019. We conducted additional searches of the international trial registries including the World Health Organization International Clinical Trials Registry Platform (ICTRP) and ClinicalTrials.gov, to identify relevant unpublished and ongoing studies. We searched the reference lists of all included studies and relevant systematic reviews to identify additional studies and contacted authors and subject experts for information on unpublished or ongoing studies. We applied no restrictions on date, language or publication status to the searches. Two review authors independently assessed all citations from the searches and identified relevant titles and abstracts. Our main outcomes of interest were suicide, attempted suicide or self-harm, and cost-effectiveness of interventions. SELECTION CRITERIA Eligible studies were randomised or quasi-randomised controlled trials, controlled intervention studies without randomisation, before-and-after studies, or studies using interrupted time series designs, which evaluated interventions to restrict the availability of, or access to, means of suicide by jumping. DATA COLLECTION AND ANALYSIS Two review authors independently selected studies for inclusion and three review authors extracted study data. We pooled studies that evaluated similar interventions and outcomes using a random-effects meta-analysis, and we synthesised data from other studies in a narrative summary. We summarised the quality of the evidence included in this review using the GRADE approach. MAIN RESULTS We included 14 studies in this review. Thirteen were before-and-after studies and one was a cost-effectiveness analysis. Three studies each took place in Switzerland and the USA, while two studies each were from the UK, Canada, New Zealand, and Australia respectively. The majority of studies (10/14) assessed jumping means restriction interventions delivered in isolation, half of which were at bridges. Due to the observational nature of included studies, none compared comparator interventions or control conditions. During the pre- and postintervention period among the 13 before-and-after studies, a total of 742.3 suicides (5.5 suicides per year) occurred during the pre-intervention period (134.5 study years), while 70.6 suicides (0.8 suicides per year) occurred during the postintervention period (92.4 study years) - a 91% reduction in suicides. A meta-analysis of all studies assessing jumping means restriction interventions (delivered in isolation or in combination with other interventions) showed a directionality of effect in favour of the interventions, as evidenced by a reduction in the number of suicides at intervention sites (12 studies; incidence rate ratio (IRR) = 0.09, 95% confidence interval (CI) 0.03 to 0.27; P < 0.001; I2 = 88.40%). Similar findings were demonstrated for studies assessing jumping means restriction interventions delivered in isolation (9 studies; IRR = 0.05, 95% CI 0.01 to 0.16; P < 0.001; I2 = 73.67%), studies assessing jumping means restriction interventions delivered in combination with other interventions (3 studies; IRR = 0.54, 95% CI 0.31 to 0.93; P = 0.03; I2 = 40.8%), studies assessing the effectiveness of physical barriers (7 studies; IRR = 0.07, 95% CI 0.02 to 0.24; P < 0.001; I2 = 84.07%), and studies assessing the effectiveness of safety nets (2 studies; IRR = 0.09, 95% CI 0.01 to 1.30; P = 0.07; I2 = 29.3%). Data on suicide attempts were limited and none of the studies used self-harm as an outcome. There was considerable heterogeneity between studies for the primary outcome (suicide) in the majority of the analyses except those relating to jumping means restriction delivered in combination with other interventions, and safety nets. Nevertheless, every study included in the forest plots showed the same directional effects in favour of jumping means restriction. Due to methodological limitations of the included studies, we rated the quality of the evidence from these studies as low. A cost-effectiveness analysis suggested that the construction of a physical barrier on a bridge would be a highly cost-effective project in the long term as a result of overall reduced suicide mortality. AUTHORS' CONCLUSIONS The findings from this review suggest that jumping means restriction interventions are capable of reducing the frequency of suicides by jumping. However, due to methodological limitations of included studies, this finding is based on low-quality evidence. Therefore, further well-designed high-quality studies are required to further evaluate the effectiveness of these interventions, as well as other measures at jumping sites. In addition, further research is required to investigate the potential for suicide method substitution and displacement effects in populations exposed to interventions to prevent suicide by jumping.
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Affiliation(s)
- Chukwudi Okolie
- Swansea University Medical SchoolSwanseaUKSA2 8PP
- Public Health WalesSwanseaUK
| | | | - Keith Hawton
- Warneford HospitalCentre for Suicide Research, University Department of PsychiatryOxfordUKOX3 7JX
| | | | | | | | - Sian F Price
- Public Health WalesPublic Health Wales ObservatoryPO Box 108, Building 1, St David?s ParkCarmarthenWalesUKSA31 3WY
| | - Keith Lloyd
- Swansea University Medical SchoolSwanseaUKSA2 8PP
| | - Ann John
- Swansea University Medical SchoolSwanseaUKSA2 8PP
- Public Health WalesSwanseaUK
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Choice of a suicide method: Trends and characteristics. Psychiatry Res 2018; 260:67-74. [PMID: 29175501 DOI: 10.1016/j.psychres.2017.11.035] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 11/07/2017] [Accepted: 11/10/2017] [Indexed: 11/24/2022]
Abstract
The aim of this study was to examine (1) suicide trends by most prevalent methods in Queensland, Australia, during 2000-2015, and (2) characteristics of people by choice of suicide method in 2000-2013. Data were obtained from the Queensland Suicide Register, which includes police and toxicology reports, post-mortem autopsy and Coroner's findings. Poisson and Joinpoint regression were used to study the first aim, and uni-variate and multi-variate logistic regression analyses were applied to investigate the second aim. Suicide method trends showed a significant increase in hanging for both sexes and poisoning with drugs for females, while there was a decline for poisoning by other means for both sexes, and 'other methods' decreased for males. Changes in the trends have altered the order of suicide methods, especially in males. Analyses of 8140 suicides were composed by the choice of method, distinguishable profiles by their demographic, clinical and social characteristics, such as having mental or physical illness or different recent life stressors were identified. This suggests that socio-cultural acceptability, and availability are the key drivers in the choice of suicide methods. Continuing increases in hanging is a big challenge in suicide prevention due to its lethality, easy realisation and its increasing acceptability.
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Azizpour Y, Sayehmiri K, Asadollahi K, Kaikhavani S, Bagheri M. Epidemiological study of suicide by physical methods between 1993 and 2013 in Ilam province, Iran. BMC Psychiatry 2017; 17:304. [PMID: 28835280 PMCID: PMC5569549 DOI: 10.1186/s12888-017-1461-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Accepted: 08/11/2017] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Suicide by aggressive physical methods such as firearms, hanging, and jumping is well known; however, different factors may influence a person while selecting a particular method. The aim of this study was to investigate the epidemiological factors involved in the selection and use of different physical methods for suicide over a long-term period in Ilam province, Iran. METHODS The present study was conducted retrospectively between 1993 and 2013 using recorded data from a comprehensive system for registration of suicide attempts in Ilam University of Medical Sciences. The epidemiological characteristics included person, time and place variables, and the outcomes of the suicide attempts. The chi square, univariate and multivariate logistic regression models were used for data analysis. RESULTS Totally, 1516 suicide attempts were evaluated (the annual incidence rate: 19/100,000 individuals). The most commonly used suicide method in females (88.4%) and males (38.9%) was self-immolation. Furthermore, the annual incidence rate among males and females was within the age group of 15-24 years (24.6 and 47.8/100,000 individuals). The risk of death by suicide in the age group of 55-64 years was 2.93 compared with the age group of 10-14 years (OR = 2.93; 95% CI = 0.64-13.54, P = 0.168). CONCLUSION This study revealed that self-immolation was the most selected physical method of suicide and had the highest incidence rate, and inflicted the survivors with severe physical and mental complications. In order to reduce the use of physical methods, especially self-immolation, life skills training becomes more important than ever.
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Affiliation(s)
- Yosra Azizpour
- 0000 0004 0611 9352grid.411528.bDepartment of Clinical Epidemiology, Faculty of Health, Ilam University of Medical Sciences, Ilam, Iran
| | - Kourosh Sayehmiri
- Psychosocial Injuries Research Center, Ilam University of Medical Sciences, Ilam, Iran.
| | - Khairollah Asadollahi
- 0000 0004 0611 9352grid.411528.bClinical Epidemiology, Department of Social Medicine, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Satar Kaikhavani
- 0000 0004 0611 9352grid.411528.bDepartment of Clinical Psychology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Maryam Bagheri
- 0000 0004 0611 9352grid.411528.bPsychosocial Injuries Research Center, Ilam University of Medical Sciences, Ilam, Iran
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Cheng Q, Chen F, Yip PSF. Media effects on suicide methods: A case study on Hong Kong 1998-2005. PLoS One 2017; 12:e0175580. [PMID: 28403231 PMCID: PMC5389840 DOI: 10.1371/journal.pone.0175580] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 03/28/2017] [Indexed: 12/11/2022] Open
Abstract
Background Previous studies have suggested that mass media’s reports of new suicide methods will increase suicides using the same method. The same pattern seems not to apply to a conventional suicide method, unless it was used by a celebrity. Objective 1) to examine media effects on both new and non-new suicide methods during 1998 and 2005 in Hong Kong (HK), when a new method by burning charcoal (CB suicide) was spreading in the region. 2) to examine how CB competed with non-CB methods in terms of media coverage and “recruiting” suicidal persons in the socio-economic context. Methods A self- and mutual- exciting process model was fitted to the data, adjusting for divorce rate, unemployment rate, and property price index. Breaking the whole period into onset, peak, and post-peak stages, the model was fitted again to examine the differences. Results Comparable copycat effects were found on both CB and non-CB suicide news. The only cross-method media effects were found in the onset stage when non-CB suicide news showed suppressing effect on CB suicides. CB suicides reported a significant self-excitation effect. A higher divorce rate and lower property price index were associated with significantly more suicides incidences and more suicide news. Conclusions The emerging of CB suicide method did not substitute media coverage of non-CB suicide in HK. Media effects in this case were not limited to new suicide method or celebrity suicide. The effects were further fueled by adverse socio-economic conditions.
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Affiliation(s)
- Qijin Cheng
- Hong Kong Jockey Club Centre for Suicide Research and Prevention, The University of Hong Kong, Hong Kong, Hong Kong SAR
| | - Feng Chen
- School of Mathematics and Statistics, The University of New South Wales, Sydney, New South Wales, Australia
| | - Paul S. F. Yip
- Hong Kong Jockey Club Centre for Suicide Research and Prevention, The University of Hong Kong, Hong Kong, Hong Kong SAR
- Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong, Hong Kong SAR
- * E-mail:
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Lam VC, Kinney JB, Bell LS. Geospatial analysis of suicidal bridge jumping in the Metro Vancouver Regional District from 2006 to 2014. J Forensic Leg Med 2017; 47:1-8. [PMID: 28160665 DOI: 10.1016/j.jflm.2017.01.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 01/19/2017] [Accepted: 01/22/2017] [Indexed: 11/26/2022]
Abstract
In the past decade, there have been many structural changes implemented to Vancouver's largest bridges as a means of deterring criminogenic and suicidal behaviors. Guided by an environmental criminology theoretical framework, this research examines the patterns and trends of 201 cases of successful suicide jumping in the Metro Vancouver Regional District (MVRD) of British Columbia, Canada from 2006 to 2014. To evaluate these trends and to bolster the existing literature on deterrence measures through environmental design, this research will examine the spatial relationship between preferential bridge jumping locations and the home addresses of the deceased. Network analysis of 145 bridge jumpers suggests that suicidal people are willing to travel greater distances to jump from more iconic bridges than those closest to their home. Beyond mere aesthetic or practical functions, symbolic significance may impact which bridges become suicide hotspots over other convenient locations. Dwelling types, demographic profiles, and regional prevalence in the MVRD have also been aggregated and explored in this study.
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Affiliation(s)
- Vienna C Lam
- School of Criminology, Simon Fraser University, Canada; Centre for Forensic Research, Simon Fraser University, Canada.
| | | | - Lynne S Bell
- School of Criminology, Simon Fraser University, Canada; Centre for Forensic Research, Simon Fraser University, Canada
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Rowbotham SK, Blau S. The circumstances and characteristics of fatal falls in Victoria, Australia: a descriptive study. AUST J FORENSIC SCI 2016. [DOI: 10.1080/00450618.2016.1194472] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Samantha K. Rowbotham
- Department of Forensic Medicine, Monash University, Southbank, Victoria 3006, Australia
| | - Soren Blau
- Department of Forensic Medicine, Monash University, Southbank, Victoria 3006, Australia
- Victorian Institute of Forensic Medicine, Southbank, Victoria 3006, Australia
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Rocos B, Chesser TJ. Injuries in jumpers - are there any patterns? World J Orthop 2016; 7:182-187. [PMID: 27004166 PMCID: PMC4794537 DOI: 10.5312/wjo.v7.i3.182] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 07/31/2015] [Accepted: 12/15/2015] [Indexed: 02/06/2023] Open
Abstract
Suicide as a cause of death, affects every health system, and is a particular problem in heavily urbanised states and low and middle income countries (which account for 75% of suicide deaths). The World Health Organisation records that 800000 commit suicide each year, representing 1.4% of annual global deaths, and that suicide was the second leading cause of death in 15-29 year-olds across the world in 2012. In the United Kingdom, jumping from height accounts for 3%-5% of the 140000 suicide attempts annually is similar incidence to the rest of Europe. The Medline and EMBASE were interrogated for studies examining suicide caused by jumping from height. Manual screening of titles and abstracts was used to identify relevant works before data was extracted and systematically reviewed to identify the characteristics of a patient who jumps from height to commit suicide, delineate their patterns of injury and explore techniques that could be used to limit its occurrence. Emergency departments receiving patients who jump from a height need to have an understanding of the potential pathology that is likely to be encountered in order to deliver multidisciplinary, efficient and timely care in order that the impact of this devastating physical, psychological and social problem could modified to the benefit of the patients involved.
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Abstract
BACKGROUND Suicide remains a significant public health problem worldwide. The aim of this study was to assess the mortality trend of suicide in Serbia for the years 1991-2014. METHODS Data on persons who died of suicide and self-inflicted injury (site codes E950-E959 revision 9 and X60-X84 revision 10 of the International Classification of Diseases to classify death, injury and cause of death) were obtained from the Statistical Office of the Republic of Serbia. The age standardized rate was calculated by direct method (per 100,000 persons, using Segi's World population as standard population). Average annual percentage change (AAPC) with the corresponding 95% confidence interval (CI) was computed for trend using the joinpoint regression analysis. RESULTS Total 33,930 (24,016 men and 9914 women) suicide deaths occurred in Serbia during the observed period, with the average annual age-standardized mortality rate being 12.7 per 100,000 inhabitants (19.5 per 100,000 in men and 6.7 per 100,000 in women). Suicide mortality in all age groups was higher among men than women. In both genders, suicide rates were highest in the oldest age group. Significantly decreased trend in suicide mortality was recorded continuously from 1991 to 2014 (AAPC=-1.9%, 95%CI -2.2 to -1.6). The most frequently used suicide method in both genders was hanging, strangulation or suffocation with 61.2% off all suicides. Changes in mortality rates were significant both for suicide by firearms, air guns and explosives (AAPC=-1.5% (AAPC=-1.5% in men and -3.1%-3.1% in women) and for suicide by hanging, strangulation, and suffocation (AAPC=-1.2% (AAPC=-1.2% in men and -3.0%-3.0% in women). In men, nonsignificant increase in suicide by firearms, air guns and explosives observed during the period 1991-1997 (by +6.1% per year) was followed by a significant decrease until 2014 (by -3.1% per year). The significantly increased mortality in suicide by firearms, air guns, and explosives was observed in older men (aged 40-69 years and 80 years and over). LIMITATIONS The low rate of autopsies in Serbia, as well as the accuracy, reliability and comparability of the suicide mortality data is always a question. CONCLUSIONS Downward trend in suicide mortality occurred in Serbia in last two decades. However, suicide rates are still very high in Serbia compared with the rates of suicides in developed countries. Particularly worrisome is the increase in mortality in older men, especially due to firearm suicides, air rifles, and explosives. Thus, additional efforts in the prevention of suicide are very important.
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Affiliation(s)
- M Ilic
- Department of Epidemiology, Faculty of Medical Sciences, University of Kragujevac, S. Markovica 69, Kragujevac 34000, Serbia.
| | - I Ilic
- Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
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Pentone A, Innamorato L, Introna F. Her life ended jumping from the fifth floor: the importance of scene investigation and the need for restrictive means to prevent jumping suicide. Am J Forensic Med Pathol 2015; 36:75-78. [PMID: 25955975 DOI: 10.1097/paf.0000000000000149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In January 2014, a dead woman was found lying near the back entrance of a building belonging to Bari University Hospital compound. After the external examination and identification of the corpse, through history, circumstances, and postmortem findings, it was supposed that the woman probably committed suicide, by jumping from the nearby building. But only after additional investigation of the scene was it possible to locate the window through which the victim had jumped, by assessing the height from which she leapt. We underline the importance of the examination of the scene. It has to be done with circumspection, even in cases that could be considered routine, paying attention to details, not excluding things that, at first glance, seem to be unnecessary. Inspection needs time, patience and accuracy, knowledge, competence, and intuition and must be the result of an efficient team action. Furthermore the occurrence of suicides, particularly jumping from a height, among immediate postdischarge psychiatric patients, stresses the importance of immediate follow-up treatment and alternative preventive strategies, considering, of course, the feasibility of structural means.
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Chang WC, Chen ESM, Hui CLM, Chan SKW, Lee EHM, Chen EYH. Prevalence and risk factors for suicidal behavior in young people presenting with first-episode psychosis in Hong Kong: a 3-year follow-up study. Soc Psychiatry Psychiatr Epidemiol 2015; 50:219-26. [PMID: 25116203 DOI: 10.1007/s00127-014-0946-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 07/28/2014] [Indexed: 10/24/2022]
Abstract
PURPOSE Individuals with first-episode psychosis (FEP) have markedly elevated risk for suicide. Previous research investigating risk factors of suicidal behavior in FEP mainly focused on western populations. This study aimed to examine the prevalence, and pretreatment and early illness predictors of suicidal behavior in Chinese FEP patients. METHOD Seven hundred participants aged 15-25 years consecutively enrolled in a territory-wide treatment program for FEP in Hong Kong from July 2001 to August 2003 were studied. Baseline and 3-year follow-up variables were collected via systematic medical file review. Suicidal behavior evaluated in this study comprised suicide attempt and completed suicide. RESULTS Seventy-four (10.6%) participants attempted suicide before treatment. Ten percent (n = 70) exhibited suicidal behavior and 1% (n = 7) committed suicide during 3-year follow-up. The majority of post-treatment suicidal behaviors (51.4%) occurred in the first year of follow-up. Jumping from a height was the most common method of committing suicide. Multivariate regression analysis indicated that previous suicide attempt, history of substance abuse and poorer baseline functioning were significantly associated with an increased risk for suicidal behavior after treatment initiation. CONCLUSION In a large representative cohort of Chinese young FEP patients, the rates of suicidal behavior before and after treatment and risk factors for post-treatment suicidal behavior were comparable to the findings of previous research on early psychosis conducted in western populations. Close monitoring of high-risk patients with history of attempted suicide or substance abuse, and enhancement of psychosocial functioning may help reduce suicide risk in the early stage of psychotic illness.
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Affiliation(s)
- Wing Chung Chang
- Department of Psychiatry, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong,
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Lee CY, Wu YW, Chen CK, Wang LJ. The Rate of Fatality and Demographic Characteristics Associated With Various Suicide Methods. CRISIS 2014; 35:245-52. [DOI: 10.1027/0227-5910/a000266] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Background: Understanding lethality and risk factors of suicide methods is an initial step in suicide prevention. Aims: To investigate the fatality rate and demographic characteristics of various suicide methods. Method: This study enrolled consecutive individuals with episodes of suicide attempts registered in a surveillance database in a city with a high rate of suicide mortality in Taiwan, from January 1, 2006, to December 31, 2010. In total, 3,089 suicide attempt events (including 2,583 nonfatal suicides and 506 completed suicides) occurred during the study period. Results: Overall, the fatality rate of suicides was 16.4%. Charcoal burning accounted for the most suicide deaths (37.6%), with a fatality rate of 50.1%. Suicide by hanging carried the highest fatality rate (81.2%). Males tended to choose more lethal methods and had higher fatality rates compared with females. Elders and married persons were less likely to attempt suicide by charcoal burning. The case fatality ratio increased along with age among suicide attempts, but not in those using charcoal burning. Conclusion: The choice of suicide methods and lethality might be influenced by one’s demographic characteristics. Results from this study may provide clues for establishing suicide prevention strategies such as restricting access to common lethal suicide methods in the high-risk group.
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Affiliation(s)
- Chun-Yi Lee
- Department of Psychiatry, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Ya-Wen Wu
- Department of Psychiatry, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan
| | - Chih-Ken Chen
- Department of Psychiatry, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan
- Chang Gung University School of Medicine, Taoyuan, Taiwan
| | - Liang-Jen Wang
- Department of Child and Adolescent Psychiatry, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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