Risk factors for suicide attempt: A population-based -genetic study from Telangana, India

Stressful Life Events and Depression During the Recurrent Outbreak of COVID-19 in China: The Mediating Role of Grit and the Moderating Role of Gratitude

Purpose

COVID-19 has been exerting tremendous influence on an individual’s physical behavior and mental health. In China, prolonged isolation may lead to depression among college students during the recurrent outbreak of COVID-19. We conducted this study to explore the relationship among stressful life events, grit, gratitude, and depression in college students during the recurrent outbreak of COVID-19.

Methods

We investigated 953 college students from across China, with an average age of 20.38 (SD=1.39) years. Participants completed four scales (Stressful Life Events Scale, Oviedo Grit Scale, Gratitude Questionnaire, and Patients’ Health Questionnaire Depression Scale-9 item).

Results

The present study found that (1) stressful life events were positively correlated with depression in college students; (2) grit mediated the positive relationship between stressful life events and depression; (3) gratitude moderated the relationship between grit and depression, and such that there was a stronger association between grit and depression for college students with high gratitude.

Conclusion

This study was of great significance for studying the relationship between stressful life events and depression in Chinese college students during the recurrent outbreak of COVID-19. Results indicated that grit and gratitude of college students may be the main targets of depression prevention and intervention. The research conclusion has theoretical and reference value for solving and preventing depression in college students during the recurrent outbreak of COVID-19.

Grit and Life Satisfaction Among College Students During the Recurrent Outbreak of COVID-19 in China: The Mediating Role of Depression and the Moderating Role of Stressful Life Events

The global recurrent outbreak of COVID-19 has brought immense psychological distress to those affected. We conducted this study to explore the relationship among grit, stressful life events, depression, and life satisfaction in college students during the recurrent outbreak of COVID-19. According to the properties of the bias-corrected bootstrap method, we surveyed 888 college students, with an average age of 20.84 (SD = 1.57) years. Participants completed questionnaires regarding grit, depression, stressful life events, and life satisfaction. The results showed that 1) grit was correlated with life satisfaction (r = 0.426, p < 0.001); 2) depression mediated the relationship between grit and life satisfaction [indirect effect = 0.0292, SE = 0.009, 95% CIboot = (0.135, 0.500)]; 3) The relationship between grit and depression was moderated by stressful life events (β = 0.107, SE = 0.028, p < 0.001, 95% CI [0.053, 0.161]). The association between grit and depression became weaker for college students with high stressful life events. The results indicated that concerned about depression and stressful life events may be the main targets for improving life satisfaction among college students during the recurrent outbreak of COVID-19.

Dissecting the genetic architecture of suicide attempt and repeated attempts in Korean patients with bipolar disorder using polygenic risk scores

BACKGROUND

Bipolar disorder (BD) has the greatest suicide risk among mental and physical disorders. A recent genome-wide association study (GWAS) of European ancestry (EUR) samples revealed that the genetic etiology of suicide attempt (SA) was not only polygenic but also, in part, diagnosis-specific. The authors aimed to examine whether the polygenic risk score (PRS) for SA derived from that study is associated with SA or repeated attempts in Korean patients with BD. This study also investigated the shared heritability of SA and mental disorders which showed an increased risk of SA and a high genetic correlation with BD.

METHODS

The study participants were 383 patients with BD. The history of SA was assessed on a lifetime basis. PRSs for reference disorders were calculated using the aforementioned GWAS data for SA and the Psychiatric Genomics Consortium data of BD, schizophrenia, major depressive disorder (MDD), and obsessive-compulsive disorder (OCD).

RESULTS

The PRS for SA was significantly associated with lifetime SA in the current subjects (Nagelkerke's R2 = 2.73%, odds ratio [OR] = 1.36, p = 0.007). Among other PRSs, only the PRS for OCD was significantly associated with lifetime SA (Nagelkerke's R2 = 2.72%, OR = 1.36, p = 0.007). The PRS for OCD was higher in multiple attempters than in single attempters (Nagelkerke's R2 = 4.91%, OR = 1.53, p = 0.043).

CONCLUSION

The PRS for SA derived from EUR data was generalized to SA in Korean patients with BD. The PRS for OCD seemed to affect repeated attempts. Genetic studies on suicide could benefit from focusing on specific psychiatric diagnoses and refined sub-phenotypes, as well as from utilizing multiple PRSs for related disorders.