The Joint Effects of Depression and Comorbid Psychiatric Disorders on Suicide Deaths: Competing Antagonism as an Explanation for Subadditivity

Interaction of sexual violence perpetration and victimization on suicide attempts in Korean adolescents on additive and multiplicative scales: a population-based cross-sectional study

PURPOSE

To evaluate the associations and interaction between sexual violence perpetration and victimization on suicide attempts using a large representative sample of adolescents from South Korea.

METHODS

Based on data from 515,247 adolescents aged 12-18 years from the Korea Youth Risk Behavior Web-Based Survey (2006-2012), a nationally representative repeated cross-sectional survey, we obtained self-reports of suicide attempts over the past year and of lifetime sexual violence perpetration and victimization. Using complex survey weights, weighted logistic regression models were employed to estimate the odds ratios (ORs). The interaction analyses were conducted on both additive and multiplicative scales. All analyses were conducted separately for boys and girls.

RESULTS

Lifetime prevalence of sexual violence perpetration were 1.3% for boys and 0.4% for girls, and about 40% of those perpetrating sexual violence were also victims. After adjusting for several covariates, sexual violence perpetration was independently associated with suicide attempts in boys (ORadjusted for boys 1.80 [95% confidence intervals: 1.53, 2.11]), whereas in girls, the association was only marginally significant (ORadjusted for girls 1.27 [1.00, 1.63]). We found the negative multiplicative and additive interaction between the sexual violence perpetration and victimization on suicide attempts for both boys and girls (the ratio of ORs 0.30 [0.23, 0.39] for boys and 0.20 [0.12, 0.31] for girls; relative excess risk due to interaction - 1.20 [-1.91, - 0.50] for boys and - 2.33 [-3.00, - 1.66] for girls).

CONCLUSION

Sexual violence perpetration and victimization were independently and interactively associated with suicide attempts in adolescents, with a sub-additive interaction found between these two variables. Public mental health services and policies should recognize the importance of actively involving adolescents who had sexually perpetrated others as key intervention targets.

The Relationship of Functioning and Life Satisfaction with Illness Management and Recovery in Patients with Bipolar Disorder: A Cross-Sectional Study

The aim of this study was to determine relationship between functioning and life satisfaction with illness management and recovery, and determinants of illness management and recovery in patients with bipolar disorder. This descriptive and correlational study was conducted with 152 participants between August 2022 and February 2023. "Personal Information Form", "Illness Management and Recovery Scale", "Functioning Assessment Short Test" and "Adult Life Satisfaction Scale" were used to collecting data. In study, a positive relationship was found between illness management and recovery and total functionality, autonomy, cognitive functionality, interpersonal relationships, and life satisfaction. Gender, marital status, educational status, employment status, total functioning, autonomy, cognitive functioning, interpersonal relationships, and life satisfaction were found to be effective in illness management and recovery. Being female, single, primary school graduate, unemployed, having low functioning (autonomy, cognitive functioning, interpersonal relationships) and having low life satisfaction were found to be determinants of illness management and recovery.

The joint effect of mental illness and parental suicide attempt on offspring suicide attempt and death: A Danish nationwide, registry-based study using multistate modeling

AIM

The aim of this study was to analyse the joint impact of moderate-to-severe mental illness and parental suicidal attempts on suicidal attempt and premature death.

METHODS

Using the Danish, nationwide health registries, a cohort study was conducted including the birth cohorts 1983-1989. Cox regression and multistate models were used to estimate relative and absolute risks of suicide attempt and premature death.

OUTCOME

We included 384,569 individuals and 7,218 individuals experienced their first suicide attempt during follow-up, while 2,762 individuals died of all causes. Joined exposure to parental suicide attempt and own mental illness increased the relative risk of suicide attempt (HR 22.57) and premature death all causes (HR 3.17). The absolute risk of suicide attempt before the age of 35 years was 20 % for offspring exposed to both parental suicide attempts and own mental illness (23 % for women vs. 15 % for men), while the risk of death was 4 % (0.6 % for women vs. 7 % for men).

CONCLUSION

Exposure to both parental suicide attempt and own mental illness increases the relative and absolute risks of suicide attempt and premature death with considerable differences across sex. These findings are important in the clinical assessment of individuals with suicidal behavior.

Suicide warning signs that are challenging to recognize: a psychological autopsy study of Korean adolescents

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.

Suicide Risk in Personality Disorders: A Systematic Review

PURPOSE OF REVIEW

This systematic review aimed to distil recent literature investigating psychosocial factors which may account for the association between personality disorder (PD) and suicide attempt or suicide death.

RECENT FINDINGS

Suicide risk is particularly elevated in people with PD compared to those with no, or many other, mental health diagnoses. Despite this, suicide prevention strategies for PD populations have not progressed markedly in recent years. It is critical, therefore, to identify additional factors associated with suicide in PD populations. Of the 34 studies included in this review, most identified a relationship between personality disorder and suicide attempt and/or death. Historical interpersonal factors (e.g., childhood trauma), drug and alcohol use, and ideation-to-enaction factors were commonly associated with suicide-related outcomes. Interventions that provide interpersonal support may reduce suicide attempts. Limitations of the review include the heterogeneity of studies and small sample sizes.

The mediating effects of social support on the association between depression and life satisfaction among patients with schizophrenia or bipolar disorder

Patients with schizophrenia or bipolar disorders in community had poor psychosocial functioning, social support, and life satisfaction. However, the interaction effects of social support and depression on life satisfaction remains unclear. Thus, we examined these associations among patients with schizophrenia or bipolar disorder. This cross-sectional study was conducted from October to December 2020 in Shenzhen, China. Information on social support, depression, and life satisfaction was assessed by standardized questionnaires through a face-to-face interview. Hierarchical multiple regression analysis was performed to estimate the associations of social support and depression with life satisfaction and to explore the mediation effect of social support. A total of 293 patients aged 39.7 ± 11.1 years (males: 47.1 %) were included in this study. Social support was positively associated with high life satisfaction (explaining 7.2% of the variance), while depression was negatively associated with life satisfaction (explaining 17.8% of the variance). Furthermore, social support mediated 12.5% of the association between depression and life satisfaction. Social support and depression were significantly associated with life satisfaction in patients with schizophrenia or bipolar disorders. Moreover, social support mediated the association between depression and life satisfaction in this population. Health interventions that benefit social support should be promoted to alleviate the negative impact of depression on their life satisfaction.

Depressive Symptoms and PANSS Symptom Dimensions in Patients With Predominant Negative Symptom Schizophrenia: A Network Analysis

INTRODUCTION

Schizophrenia is a severe psychiatric disorder with a large symptomatic heterogeneity. Moreover, many patients with schizophrenia present with comorbid psychiatric symptoms or disorders. The relation between depressive symptoms and negative symptoms, such as blunted affect, alogia, anhedonia, asociality and avolition, is particularly intriguing. The negative symptoms can be primary or secondary of depression or overlapping with depressive symptoms. The aim of the present network analysis was to better understand the interactions between depressive symptoms and the different symptoms of schizophrenia and to investigate whether negative symptoms and depressive symptoms can be better delineated.

METHODS

A network analysis on the baseline item scores of the Positive and Negative Syndrome Scale (PANSS) and Calgary Depression Scale for Schizophrenia (CDSS) from the cariprazine-risperidone study in patients with predominant negative symptoms (PNS) was performed. The connections between all these symptoms (PANSS and CDSS) were investiged: node strength and network centrality were estimated and the Mohr 5-factor model of the PANSS was applied to test the validity of its different symptoms clusters.

RESULTS

Across 460 patients with schizophrenia and PNS, the most central symptom (largest node strength) was depression (PANSS) followed by depression (CDSS), anxiety, lack of judgment and insight and tension. The PANSS negative symptom cluster together and was only poorly connected with CDSS depresson symptoms. The Mohr 5 factor model was clearly recognized in the overall clustering of symptoms.

CONCLUSION

This network analysis suggests that depression and anxiety symptoms are the most central in this PNS patient population, despite the baseline low depression scores, and that negative symptoms are a clearly independent symptom cluster that can be delineated from depressive symptoms.