Suicide Behavior and Its Predictors in Patients with Schizophrenia in Ethiopia
Background People with schizophrenia (PWS) are at greater risk of suicide. However, suicide behaviors that occur in PWS are often overlooked, inadequately characterized, and not consistently integrated into treatment. Despite this burden and consequences in Ethiopia, there is a dearth of studies concerning suicide behavior in PWS. Therefore, this study is aimed at assessing the magnitude of suicide behavior and its predictors among PWS in Ethiopia. Methods An institution based cross-sectional study was employed. Data were collected using the structured interviewer-administered questionnaire from a sample of 300 PWS at Amanuel Mental Specialized Hospital (AMSH). The revised version of Suicide Behavior Questionnaire (SBQ-R) was used to assess suicide behavior in PWS. The data was collected from March 1 to 30, 2019. Binary logistic regression was performed to identify independent predictors of suicidal behavior at 95% confidence level. Statistical significance was declared at p value <0.05. Result A total of 300 patients with schizophrenia participated in the study. More than two-thirds of 203 (67.7%) of the participants were males, and 116 (38.7%) participants were between the ages of 28 and 37 years. We found that the prevalence of suicide behavior among PWS was 30.3%. Being unemployed (AOR = 3.65, CI = 1.32, 10.05), family history of suicide (AOR = 3.16, CI = 1.38, 7.23), substance use (AOR = 2.51, CI = 1.13, 5.59), current positive psychotic symptoms (hallucination (AOR = 6.39, CI = 2.86, 14.29), and delusion (AOR = 4.15, CI = 1.95, 14.29) and presence of comorbid depression (AOR = 4.81, CI = 1.98, 11.68) were independent significant predictors with suicidal behavior in PWS. Conclusion The prevalence of suicidal behavior among PWS was found to be high. Hence, designing strategies for early screening and intervention is the most critical prevention strategy of suicide in PWS.
8
- 10.5350/dajpn2015280304
- Sep 15, 2015
- Dusunen Adam: The Journal of Psychiatry and Neurological Sciences
346
- 10.1177/026988110101500209
- Mar 1, 2001
- Journal of Psychopharmacology
25
- 10.1159/000284977
- Jan 1, 1996
- Psychopathology
47
- 10.1155/2016/3165243
- Jan 1, 2016
- Schizophrenia Research and Treatment
123
- 10.1017/s0033291797005990
- Jan 1, 1998
- Psychological Medicine
184
- 10.1177/1359786810382468
- Oct 5, 2010
- Journal of Psychopharmacology (Oxford, England)
42
- 10.1176/ps.46.9.877
- Sep 1, 1995
- Psychiatric Services
23
- 10.4314/ahs.v11i1.65004
- Mar 1, 2011
- African health sciences
78
- 10.1176/appi.ajp.158.5.742
- May 1, 2001
- American Journal of Psychiatry
147
- 10.1111/j.1600-0447.2006.00849.x
- Jun 26, 2006
- Acta Psychiatrica Scandinavica
- Research Article
1
- 10.1080/13284207.2024.2339348
- May 3, 2024
- Clinical Psychologist
ABSTRACT Background Prior studies seeking to identify factors associated with suicide in patients with schizophrenia have reported important, though limited, and controversial findings. Our aims were to examine the prevalence of suicidal ideation (SI) and investigate the relationship between SI and a variety of factors (such as insomnia, religious coping, previous life experiences, dependency in daily living activities, positivity) in patients with schizophrenia. Method This was a cross-sectional study carried out among Lebanese patients with schizophrenia during January 2022. Results Out of 196 patients, 17.3% had SI. Multivariable logistic regression found that more loneliness (aOR = 1.43) and more severe insomnia (aOR = 1.08) were substantially related with increased odds of reporting SI, whereas having more positive life experiences (aOR = 0.83) was associated with lower odds of occurrence of SI. Positive/negative religious coping, activities of daily living and positivity showed no significant association with SI in our sample and context. Conclusion Findings showed that SI is highly prevalent in chronic patients with schizophrenia. The study identified three important factors (insomnia, loneliness, and positive experiences in life) associated with SI in schizophrenia, which could be targeted in prevention and intervention strategies.
- Research Article
10
- 10.1016/j.psychres.2022.114505
- Mar 7, 2022
- Psychiatry Research
Modifying a cognitive behavioral suicide prevention treatment for adults with schizophrenia spectrum disorders in community mental health
- Research Article
1
- 10.4103/0972-6748.328868
- Oct 1, 2021
- Industrial Psychiatry Journal
Suicide/parasuicide is seen at a greater rate in schizophrenia than in the general population, yet the psychological basis of this risk is poorly understood. It is estimated that 10% of patients suffering from schizophrenia attempt suicide. The major risk factors implicated are male gender, chronic illness with multiple relapses, family history of suicide, past suicidal and impulsive behavior, negative attitude toward treatment, and concurrent substance use. Treatment must target the identified risk factors for prevention of suicide in these patients. Here, we discuss three cases with self-inflicted cuts over the anterior aspect of the neck and wrists. They were diagnosed to have paranoid schizophrenia and were treated with antipsychotics, on which they showed improvement.
- Research Article
- 10.1016/j.pmedr.2023.102335
- Jul 20, 2023
- Preventive Medicine Reports
Prevalence and associated determinants of suicidal ideation and attempt among people with severe mental disorders in Addis Ababa, Ethiopia a cross-sectional study
- Research Article
12
- 10.7717/peerj.13033
- Mar 1, 2022
- PeerJ
BackgroundPeople living with schizophrenia are at higher risk of disruptive behaviors, including violence, running away from home, and suicide attempts, which often co-occur and are highly correlated, yet seldom studied together. The current study investigated the frequency and correlates of disruptive behaviors among a Chinese community sample of individuals living with schizophrenia.MethodsA cross-sectional study was conducted among 400 individuals living with schizophrenia from 12 communities. Data about disruptive behaviors in the past 2 months was collected using self-designed questionnaires. Clinical characteristics including psychiatric symptoms, depression, anxiety, disability, and functioning were collected by internationally standardized assessment instruments.ResultsAbout one-fifth (21%) of the subjects had experienced at least one form of disruptive behavior in the past 2 months. Violence was the most commonly reported (17.25%), which included damaging property (15%) and physical violence toward others (7.5%); followed by running away (6.5%), and suicide attempts (4%). Logistic regression analysis suggested that medication non-adherence (OR = 4.96, 95% CI [1.79–13.72]), involuntary hospital admission (OR = 5.35, 95% CI [2.06–13.87]), depression (OR = 2.34, 95% CI [1.07–5.10]), and lower social functioning (OR = 0.97, 95% CI [0.93–0.99]) were independently associated with a higher risk of disruptive behaviors.ConclusionsThe overlap among three forms of disruptive behaviors warrants them to be assessed and studied together in clinical, research, and policy fields. The significant association between disruptive behaviors with medication non-adherence, involuntary admission, depression, and lower social functioning indicates the need for integrated, targeted, and needs-based intervention programs to be developed for the prevention and treatment of these disruptive behaviors.
- Research Article
- 10.3389/fpsyt.2022.1085201
- Jan 19, 2023
- Frontiers in psychiatry
Psychotic disorders increase the risk for premature mortality with up to 40% of this mortality attributable to suicide. Although suicidal ideation (SI) and suicidal behavior (SB) are high in persons with psychotic disorders in sub-Saharan Africa, there is limited data on the risk of suicide and associated factors among persons with psychotic disorders. We assessed SI and SB in persons with psychotic disorders, drawn from a large case-control study examining the genetics of psychotic disorders in a Kenyan population. Participants with psychotic disorders were identified using a clinical review of records, and the diagnosis was confirmed with the Mini-International Neuropsychiatric Interview (MINI). We conducted bivariate and multivariate logistic (for binary suicide outcomes) or linear regression (for suicide risk score) analysis for each of the suicide variables, with demographic and clinical variables as determinants. Out of 619 participants, any current SI or lifetime suicidal attempts was reported by 203 (32.8%) with psychotic disorders, of which 181 (29.2%) had a lifetime suicidal attempt, 60 (9.7%) had SI in the past month, and 38 (20.9%) had both. Family history of suicidality was significantly associated with an increased risk of suicidality across all the following four outcomes: SI [OR = 2.56 (95% CI: 1.34-4.88)], suicidal attempts [OR = 2.01 (95% CI: 1.31-3.06)], SI and SB [OR = 2.00 (95% CI: 1.31-3.04)], and suicide risk score [beta coefficient = 7.04 (2.72; 11.36), p = 0.001]. Compared to persons aged <25 years, there were reduced odds for SI for persons aged ≥ 25 years [OR = 0.30 (95% CI: 0.14-0.62)] and ≥ 45 years [OR = 0.32 (95% CI: 0.12-0.89)]. The number of negative life events experienced increased the risk of SI and SB [OR = 2.91 (95% CI: 1.43-5.94)] for 4 or more life events. Higher negative symptoms were associated with more suicidal attempts [OR = 2.02 (95%CI: 1.15-3.54)]. Unemployment was also associated with an increased risk for suicidal attempts [OR = 1.58 (95%CI: 1.08-2.33)] and SI and SB [OR = 1.68 (95% CI: 1.15-2.46)]. Suicidal ideation and SB are common in persons with psychotic disorders in this African setting and are associated with sociodemographic factors, such as young age and unemployment, and clinical factors, such as family history of suicidality. Interventions targeted at the community (e.g., economic empowerment) or at increasing access to care and treatment for persons with psychotic disorders may reduce the risk of suicide in this vulnerable population group.
- Research Article
- 10.1016/j.schres.2024.10.019
- Nov 6, 2024
- Schizophrenia Research
Validation of the Amharic version of Cognitive Assessment Interview (CAI-A) in people with schizophrenia in Ethiopia
- Research Article
3
- 10.1016/j.psychres.2023.115474
- Sep 11, 2023
- Psychiatry Research
Introducing an interview-based cognitive assessment tool for people with Schizophrenia in Ethiopia
- Research Article
2
- 10.1093/schbul/sbad178
- Dec 30, 2023
- Schizophrenia bulletin
Cognitive difficulties significantly burdened people with schizophrenia (PWS). However, cognitive assessment is often unavailable in low- and middle-income counties (LMICs) due to a lack of validated and culturally adapted cognitive assessment tools. In this study, we developed and evaluated a culturally sensitive cognitive battery for PWS in Ethiopia. This study was conducted in three phases. First, we selected appropriate tests through an instrument selection procedure and created a new battery. Then, we rigorously adapted the tests using culturally competent procedures, including cognitive interviewing and expert meetings. Finally, we tested the new battery in 208 PWS and 208 controls. We evaluated its psychometric properties using advanced statistical techniques, including Item Response Theory (IRT). The Ethiopian Cognitive Assessment battery for Schizophrenia (ECAS) was developed from three different batteries. Participants reported tests were easy to complete, and the raters found them easy to administer. All tests had good inter-rater reliability, and the composite score had very high test-retest reliability (ICC = 0.91). One-factor structure better represented the data with excellent internal consistency (α = .81). ECAS significantly differentiated PWS from controls with 77% sensitivity and 62% specificity at a Z-score ≤0.12 cut-off value. IRT analysis suggested that the battery functions best among moderately impaired participants (difficulty between -0.06 and 0.66). ECAS is a practical, tolerable, reliable, and valid assessment of cognition. ECAS can supplement current assessment tools in LAMICs for PWS and can be used to measure cognitive intervention outcomes.
- Research Article
- 10.26630/jk.v15i2.4499
- Aug 26, 2024
- Jurnal Kesehatan
Hallucinations are a common symptoms found in individuals with schizophrenia. These hallucination cause people with schizophrenia (PWS) to experience difficulty in controlling themselves. This has an impact on suicidal behavior, harming other people, and destroying the surrounding environment. Therefore, a cognitive behavioral intervention based on self-management is needed as a non-pharmacological therapy to help PWS control hallucinations. This study aims to identify the effect of cognitive behavioral interventions based on self-management in people with schizophrenia. This study uses a quasy-experimental two groups pretest-posttest design. The sample consists 78 inpatient respondents with schizophrenia, divided into two groups, 39 in the intervention group and 39 in control group. Technique sample in this study using purposive sampling. Research data collection uses a questionnaire instrument for the ability to control hallucinations. The data explained used statistics, such as descriptive, dependent, and independent t-tests. The research results show that there are changes in the ability to control hallucinations in the intervention group and control group before and after self-management-based cognitive behavioral intervention (p-value=0.001). There was a difference in the ability to control hallucinations between the intervention group with the control group after cognitive behavioral intervention based on self-management (p-value= 0.013). The cognitive behavioral intervention based on self-management can be used as an effective cessation intervention to improve the ability of PWS to control hallucinations so that they can optimize their function in carrying out daily activities.
- Research Article
24
- 10.4088/jcp.v68n1007
- Oct 15, 2007
- The Journal of Clinical Psychiatry
This study examined the association between family history of completed suicide and suicidal behavior and other clinical variables in subjects with bipolar disorder. 374 outpatients aged from 19 to 88 years (mean +/- SD age = 41.9 +/- 4.1 years) (54.3% female) meeting DSM-IV criteria for bipolar disorder type I or II or schizoaffective disorder, bipolar subtype, were included in the study. Forty-eight subjects with a family history of completed suicide were compared to 326 subjects without a family history of completed suicide regarding several clinical and demographic variables. The study was conducted from 2001 to 2004. There were no statistically significant demographic differences between bipolar disorder subjects with and without a family history of suicide. Bipolar disorder subjects with a family history of suicide showed higher rates of cluster C personality disorders than subjects without a family history of suicide (14.9% vs. 2.5%, OR = 6.72, 95% CI = 2.31 to 19.51, p < .001). Subjects with a family history of suicide also demonstrated a significantly greater lifetime prevalence of suicide attempts (52.2% vs. 25.5%, OR = 3.19, 95% CI = 1.7 to 6.0, p < .001). Results remained significant after controlling for all possible interactions. Family history of completed suicide is a significant risk factor associated with suicidal attempts in patients with bipolar disorder. These findings underscore the importance of identifying patients with a family history of suicide in order to provide prompt treatment and careful follow-up.
- Abstract
- 10.1093/geroni/igz038.1008
- Nov 8, 2019
- Innovation in Aging
Introduction: Cognitive impairment (CI) is a core feature of schizophrenia (SCZ). Comorbidities such as substances/smoking, metabolic syndrome, and medications contribute to CI. There are racial disparities in CI in the general US population. No study has evaluated CI racial disparities among people with schizophrenia (PWSCZ). The aims of this study were to describe the clinical/psychosocial correlates and racial disparities in CI. Methods: Cognitive performance in PWSCZ over 55 years old was measured using MATRICS Consensus Cognitive Battery (N=66). We calculated age- and gender-corrected scores for global cognitive performance, which represent number of standard deviations away from the mean of the MCCB normative sample. Clinical and sociodemographic data were collected. A counterfactual approach was used to explore mediation of CI through education. Results: Our “all-comer” convenience sample represented 57.6% white, 25.8% black, and 16.6% other non-white groups. There was a black/non-black disparity in cognitive score (-2.33 v.s. -1.68, t=2.843, p<.01). This difference remained significant in a regression model adjusted for age, substance use, smoking, education, antipsychotic medication, and positive/negative symptoms (-.6611, [95%CI:-1.12,-.20], overall F8, 57=3.690, p=.0016). In the mediation analysis, education accounted for 19% of the disparity in CI. In the counterfactual scenario in which education was distributed equally, education accounted for 48% of the disparity. Conclusion: There are significant racial disparities in cognitive performance among older PWSCZ, and educational attainment may account for a sizable portion of the disparity.
- Research Article
8
- 10.1016/j.comppsych.2016.06.006
- Jun 13, 2016
- Comprehensive Psychiatry
Differences between female suicidal patients with family history of suicide attempt and family history of completed suicide
- Research Article
75
- 10.1192/bjp.bp.106.025155
- Mar 1, 2007
- British Journal of Psychiatry
Long-term mortality and the risk factors for premature death among patients with schizophrenia living in rural communities are unknown. To explore the 10-year mortality and its risk factors among patients with schizophrenia. We used data from a 10-year prospective follow-up study (1994-2004) of mortality among people with schizophrenia, and death registration data for Xinjin County, Chengdu, China. The mortality rate was 2228 per 100,000 person-years during follow-up. Both all-cause mortality and suicide rates were significantly greater in male than in female patients. Age at illness onset (>45 years), duration of illness (> or =10 years), age greater than 50 years, physical illness, in ability to work, male gender, and never having received treatment were identified as independent predictors of increased mortality. Higher mortality rates in male patients may contribute to the higher prevalence of schizophrenia in women compared with men in China. The findings of risk factors for mortality should be taken into account when developing interventions to improve outcomes among people with schizophrenia.
- Research Article
28
- 10.1176/appi.ps.58.4.561
- Apr 1, 2007
- Psychiatric Services
Predicting Hospitalization Versus Discharge of Suicidal Patients Presenting to a Psychiatric Emergency Service
- Research Article
2
- 10.1027/0227-5910/a000240
- Feb 28, 2014
- Crisis
At the American Association of Suicidology’s (AAS) 46th Annual Conference in Austin, Texas (http://www.suicidology.org/web/guest/education-and-training/annualconference), participants were challenged to address why there has not been more progress in reducing the rates of completed suicides (Berman, 2013). A draft of recommendations from the National Action Alliance for Suicide Prevention’s Research Prioritization Task Force was presented at the meeting and subsequently published in this journal (National Action Alliance for Suicide Prevention [NAASP], 2013a, 2013b). The purpose of this commentary is to address this challenge by emphasizing the importance of employing a disease etiology strategy that integrates molecular data with clinical data, environmental data, and health outcomes in a dynamic, iterative fashion. The recommendations of the Research Prioritization Task Force tackle important public health program issues and are embedded within seven key questions, summarized as: 1. Why do people become suicidal? 2. How do we better detect/predict risk? 3. What interventions prevent suicidal behavior? 4. What are the effective services for treating suicidal persons and preventing suicidal behavior? 5. How do we reduce stigma? 6. What are the suicide prevention interventions outside of health-care settings? 7. Which existing and new infrastructure needs are required to further reduce suicidal behavior? (NAASP, 2013b; Silverman et al., 2013)
- Dissertation
1
- 10.17037/pubs.03894561
- Apr 13, 2017
Background: Community-based rehabilitation (CBR) is a promising intervention to address the complex needs of people with schizophrenia in low-income countries, in particular the high levels of disability, problems accessing treatment and stigma experienced by this group. There have been few randomised controlled trials of communitybased psychosocial interventions for schizophrenia using non-specialist workers, and none which have utilised a community mobilisation approach or that are set in low-income countries. This thesis presents the intervention development, piloting and evaluation plans of a CBR intervention for people with schizophrenia in Ethiopia. Methods: A theory of change approach was used. Intervention development work, including a situational analysis, qualitative interviews and participatory workshops, was conducted to design the CBR intervention. The intervention was manualised and ten non-specialists were trained to deliver CBR. Ten people with schizophrenia and their caregivers received CBR in a 12 month pilot study. Qualitative, process and quantitative data were collected. The protocol for a cluster randomised trial to evaluate CBR, refined on the basis of the pilot findings, was produced. Results: CBR delivered by non-specialists is an acceptable approach for people with schizophrenia in rural Ethiopia. This CBR intervention is likely to be feasible but this requires evaluation on a larger scale. CBR may improve functioning in people with schizophrenia through maximising family and community support, supporting income-generating activities, facilitating access to medication, and increasing hope. However, contextual factors, including poverty and inaccessible anti-psychotic medication, may be beyond the capacity of CBR to overcome. Conclusion: A community-based intervention such as CBR should be provided for people with schizophrenia in low-income countries, alongside accessible anti-psychotic medication. There are indications that CBR can impact on functioning but a randomised controlled trial remains essential. The trial analysis will help to determine the ‘active ingredients’ of CBR that should be prioritised in scaling up.
- Research Article
4
- 10.1186/s12888-022-04306-2
- Oct 24, 2022
- BMC Psychiatry
BackgroundSuicide is a prominent cause of death among inmates worldwide, accounting for over 30% of all deaths. Several factors, including prison-related, psychiatric disorders, stressful life events, and substance use-related factors are believed to be associated with an increased risk of suicidal behavior in a correctional facility. The present study aimed to determine the prevalence and associated factors of Suicidal Behavior among prisoners at Dessie town correctional institution, Ethiopia.MethodsFrom February 16 to March 5, 2020, a cross-sectional survey was conducted among 288 inmates at the Dessie Town Correctional Center. A systematic random sampling technique was used to select study participants during the study period. Data was collected through face-to-face interview methods using Suicidal Behavior Revised (SBQ-R). The collected data were coded, entered into Epi-data data version 3.1, and analyzed by SPSS Version 26. Binary logistic regression was carried out to identify independent predictors of suicidal behavior at a 95% confidence level. Variables at a p-value < 0.05 with 95% CI were declared statistically significant.ResultsThe prevalence of Suicidal behavior among prisoners was found to be 25.3% [(95% CI: 20.5, 30.6)]. This study showed that being female [AOR = 5.14;95% CI (1.62,16.29)], depression [AOR = 4.97;95%CI (2.53,9.77)], anxiety [AOR = 3.14; 95%CI (1.59,6.22)], experienced stressful life events [AOR = 5.11; 95%CI (2.24, 11.65)], and ever substance use [AOR = 2.83; 95%CI (1.41, 5.59)] were variables significantly associated with suicidal behavior among prisoners in Dessie town correctional institution.Conclusion and recommendationsIn this study, suicidal behavior was highly prevalent among prisoners compared to the general population. Being female, depression, anxiety, stress full life events, and substance use were variables that are independent predictors of suicidal behavior. This study recommends that the institution needs to deliver an appropriate psychiatric facility to diagnose and treat prisoners with suicidal behavior. Also, special attention should be given to early screening and treatment of prisoners through prison health services, which is the most critical prevention strategy of suicide in prisoners.
- Research Article
- 10.4103/ijsp.ijsp_336_21
- Sep 15, 2023
- Indian Journal of Social Psychiatry
Background: According to the World Health Organization, substance dependence is persistent or sporadic drug use inconsistent with or unrelated to acceptable medical practice. Substance dependence is showing a rising trend all over the world, and these disorders are rapidly recognized throughout in India. It is considered as a major cause of preventable ill health, social harm, and premature death throughout the population. As compared to the general population, those with substance use disorders are 5.3% more likely to die from suicide. There are several distal or predisposing risk factors associated with suicidal behavior such as personality traits, childhood trauma, and family history of suicide. Therefore, the present study is to compare and examine the distal factors of suicidal ideation (SI) and suicidal attempt (SA) with patients without SI and SA (WS) in patients with substance dependence. Materials and Methods: This was a cross-sectional observational study conducted at the inpatient departments of Central Institute of Psychiatry, Ranchi. Purposive sampling of sixty patients was done to further divide them into Group 1 (SI), Group 2 (SA), and Group 3 (WS). The sample was purposively collected to include sixty patients with substance dependence. They were screened by using the Addiction Severity Index scale, and Beck Scale for Suicidal Ideation (BSSI), Suicide Intent Scale, Childhood Trauma Questionnaire (CTQ), and the NEO five-factor inventory-3 (NEO-FFI-3) were administered to assess SI, SA, childhood trauma and personality traits, respectively. Results: The present study reveals that all the personality domains except conscientiousness on NEO-FFI 3 may have importance in differentiating the substance-dependent patients with SI/SA from WS patients. Only physical and emotional abuse on CTQ may be a significant distal factor for suicidal thoughts and behavior, whereas physical abuse may have more significance for SAs in substance dependence patients. Family history of suicide was not significant in patients with SI/SA. Conclusions: These findings may assist in formulation of therapeutic strategies for suicidal patients of substance dependence.
- Research Article
5
- 10.3389/fpsyt.2023.1269744
- Dec 11, 2023
- Frontiers in psychiatry
Pathological personality traits have repeatedly been identified as important risk factors for suicidal ideation and behaviors. Moreover, impulsive-aggressive traits, have shown a consistent association with suicidal behaviors across the lifespan. Adolescence represents a critical period for the emergence of different personality traits, mood disorders, and suicidal behaviors, but the relationship between these variables remain poorly understood. These variables were examined in a cross-sectional case-control design involving three groups: 30 adolescents with a depressive disorder and past suicide attempt (Mean Age = 16.2, Females = 26), 38 adolescents with a depressive disorder but without past suicide attempt (Mean age = 16.0, Females = 29), and 34 healthy adolescent controls (Mean age = 15.2, Females = 22). Suicidal ideations were indexed using Suicidal Behavior Questionnaire (SBQ-R), psychiatric disorder assessed using a semi-structured questionnaire (K-SADS-PL), depressive symptoms with the Beck Depressive Inventory (BDI), symptoms characteristics of personality disorders with the Scheduled Clinical Interview for the DSM-IV (SCID-II) screening questionnaire, and impulsivity with the Barratt Impulsivesness Scale (BIS). Findings showed that impulsivity (F = 11.0, p < 0.0001) and antisocial symptoms characteristics of personality disorders (p < 0.001, d = 0.70) displayed the most robust association with adolescent suicide attempts. Borderline symptoms characteristics of personality disorders did not discriminate attempters from non-attempters but presented high correlations with suicidal ideation and depression severity. In an item-wise analysis, suicide attempt status was uniquely correlated with symptoms characteristics of an antisocial personality disorder. Suicide attempt status also correlated with non-suicidal self-injury and a chronic feeling of emptiness. The caveats of this cross-sectional study include the stability of symptoms characteristics of personality disorders in adolescence and the limited sample size. In sum, suicidal behaviors were characteristically correlated with increased impulsivity and antisocial symptoms characteristics of personality disorders, but other symptoms characteristics of personality disorders were relevant to adolescent depression and suicidal ideation. Understanding the emergence of symptoms characteristics of personality disorders and suicidal behaviors in a developmental context can ultimately inform not only the neurobiological origin of suicidal behaviors, but also provide new avenues for early detection and intervention.
- Supplementary Content
39
- 10.1371/journal.pmed.0030107
- May 1, 2006
- PLoS Medicine
Psychopathology, especially depression, is the most important risk factor for suicidal behaviour [ 1, 2] with between 25% and 40% of depressed patients attempting suicide [ 3] and about 3.4% completing suicide eventually [ 4]. Given recent figures suggesting that the lifetime prevalence of a major depressive episode among the US population is 32.6–35.1 million [ 5], it is no surprise that suicide ranks among the top ten causes of death in many other countries [ 6]. Understanding the aetiology of a significant public health issue such as suicide is important but difficult because of its complex and multifactorial origins. Although most suicidal behaviour occurs within the context of a mood disorder, most depressed individuals never attempt suicide. Furthermore, no linear relationship between the severity of the depressive episode and the likelihood of suicide has been forthcoming [ 7], highlighting the importance of other factors in addition to psychiatric illness. These factors include substance abuse or alcoholism, a head injury, a dysfunctional family or childhood abuse [ 8], high rates of gun ownership [ 9], smoking [ 10], socioeconomic adversity [ 11], and personality factors [ 12]. Genetic factors may also be very important [ 13, 14]. Marusic and Farmer [ 15] argue that the variation in the suicide rate across European countries (7–43 per 100,000 inhabitants per year) cannot be explained by sociocultural factors alone and is probably due to shared genetic vulnerability. A case in point is the high suicide rate in Hungary and Finland, two populations with a common genetic origin but with divergent cultural and political trajectories [ 15]. Colours of Depression At the family level, the risk of suicide is higher in individuals with a family history of suicide [ 16, 17], and the suicide rate of adolescents is highly correlated with the suicide rate among their relatives [ 18]. Even studies that have controlled for levels of psychopathology have shown that relatives of suicide completers and attempters are at an increased risk for suicidal behaviour [ 19, 20]. Twin studies indicate that this familial clustering of suicidal behaviour has a partly genetic basis with heritability estimates of 17%–55% for suicidal behaviour [ 21, 22] and 20% for suicide [ 23] reported. The only adoption study we are aware of suggested that as far as suicidal behaviour is concerned, adoptees resemble their biological parents more than the adoptive family [ 24]. These data have catalysed the search for genes that predispose to suicidal behaviour, with more than 100 studies now published [ 25]. Post-mortem studies of people who committed suicide have led to the general consensus that a disturbance of the serotonergic system is associated with suicidal behaviour. Therefore, it is no surprise that most of the genes implicated in suicidal behaviour—the serotonin transporter (SERT), tryptophan hydroxylase (TPH), monoamine oxidase A (MAO-A), and the serotonin receptors, 5-HTR1A, 5-HTR2A, and 5-HTR1B—modulate central serotonergic function (see Table 1). As is the case with most complex traits, however, success tends to plateau at a point where good candidate genes are identified but conclusive causal inferences remain elusive because of replication failures. Table 1 Association Analyses of Genes Predisposing to Suicide or Suicidal Behaviour The unequivocal identification of genes related to psychiatric disorder is retarded by a complex interplay of latent environmental influences or gene–environment interactions; genetically and phenotypically heterogeneous samples; the possible effects of numerous loci of small effect size; and the difficulty of adequately correcting for multiple testing. Faced with these frustrations, the use of endophenotypes as an aid to molecular genetic investigations has become almost de rigueur. In the case of suicide, a number of researchers have advocated the use of personality traits as endophenotypes [ 12, 26].
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6
- 10.1155/2023/7035893
- Feb 3, 2023
- Schizophrenia research and treatment
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- 10.1155/2022/1381542
- Feb 27, 2022
- Schizophrenia research and treatment
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- Jan 1, 2021
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- Jan 1, 2021
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- Jan 1, 2021
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- Jan 1, 2021
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- 10.1155/2021/7721760
- Jan 1, 2021
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- 10.1155/2020/1638403
- Jul 23, 2020
- Schizophrenia Research and Treatment
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- 10.1155/2020/5176834
- May 31, 2020
- Schizophrenia research and treatment
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