Suicide Screening Questionnaire-Self-Rating (SSQ-SR): Development, reliability, and validity in a clinical sample of Korean adults.

The goal of the present study was to evaluate the psychometric properties of the Suicide Screening Questionnaire-Self-Rating (SSQ-SR). A 25-item SSQ-SR is a newly developed suicide screening tool that measures suicide risk factors, including a history of suicidal thoughts and behaviors (STBs), life stress, and mental health problems. To investigate the reliability and validity of the SSQ-SR, we conducted a longitudinal case-control study with adults with and without STBs in the past six months. A total of 176 participants were recruited through 12 hospital-based Crisis Response Centers across South Korea. At the baseline, we administered the SSQ-SR, the Beck Scale for Suicide Ideation (BSSI), and the Patient Health Questionnaire-9 (PHQ-9). In a 6-months follow-up, we investigated whether the participants engaged in suicidal ideation, plan, or attempt since the baseline assessment. As a result, the SSQ-SR demonstrated a strong internal consistency (Cronbach's alpha coefficient = 0.96). In addition, the total score of SSQ-SR had concurrent validity compared to the total scores of the BSSI and the PHQ-9. In comparing the suicidal groups with the control group, the ROC analysis indicated the optimal cut point at 31 with a sensitivity rate of 0.97 and a specificity rate of 0.98. Through explanatory factor analysis, two factors were identified: Mental Health and Environmental Factors and Active Suicidal Thoughts and Behaviors. The SSQ-SR total and sub-factor scores were prospectively associated with subsequent suicidal ideation, plan, and attempt. These findings support that the SSQ-SR is a promising tool in prospectively screening those who are at risk of suicidal thoughts, plans, and nonfatal attempts.

Development and validation study of the suicide screening questionnaire-observer rating (SSQ-OR).

Background: Observer rating scales are necessary to evaluate the risk of suicide because individuals at risk for suicide are often unwilling to seek help on their own. Reliability and validity were evaluated for the newly developed Suicide Screening Questionnaire-Observer Rating (SSQ-OR). Methods: Preliminary items were assessed by 251 experts online and 25 questions were selected. 328 individuals at high-risk and 661 controls from 12 Crisis Response Centers and 5 university counseling centers were recruited to complete SSQ-OR, Beck Scale for Suicide Ideation (BSSI) and Patient Health Questionnaire-9 (PHQ-9). In a 6 months follow-up, we reached out to 176 participants to ask whether they had experienced a suicidal thought, plan, or attempt since the baseline assessment. Cronbach's α, Mann-Whitney U test, Spearman's correlation, factor analyses, Receiver operating characteristic (ROC) analysis and logistic regression analysis were used to verify the SSQ-OR. Results: Structural validity was supported by a two-factor solution using exploratory and confirmatory factor analyses. Excellent model fit indices for the two-factor structure using exploratory factor analysis were confirmed (RMSEA = 0.033, TLI = 0.980, CFI = 0.983). The SSQ-OR demonstrated strong internal consistency. The concurrent validity based on the correlations with other self-reported indicators of suicidal potential-BSSI and PHQ-9- revealed substantial relationships. The high-risk group was effectively characterized by a cut-off point of 4, with a sensitivity of 0.73 and a specificity of 0.79. The SSQ-OR scores were significant predictors of suicidal thoughts and behaviors within 6 months. Conclusions: The SSQ-OR exhibits sound psychometric properties, and could be used as a complement to a self-report or clinical-administered scale to screen suicide risk comprehensively.

Association between pre-pregnancy tobacco smoking and postpartum depression: A nationwide cohort study.

BACKGROUND: Prior literature examining the association between cigarette smoking and postpartum depression (PPD) has focused primarily on smoking behaviors during pregnancy or postpartum. However, there is a dearth of studies assessing pre-pregnancy smoking in relation to PPD. METHOD: A retrospective national cohort data from the National Health Insurance of South Korea were analyzed. A total of 392,394 women who gave birth between 2011 and 2015 and received health checkups within a year before pregnancy without a history of diagnosed depression were included. During the health checkup, participants self-reported their smoking status, amount, and duration in a health questionnaire. The diagnosis of PPD was defined by ICD-10 codes F32 and F33 during hospital visits within two years postpartum. RESULT: Overall, 24,441 (6.2 %) women were newly diagnosed with depression within two years postpartum. Those who reported that they had quit smoking or were currently smoking before pregnancy were more likely to be diagnosed with PPD compared to nonsmokers. A greater number of cigarettes smoked was associated with a higher risk of PPD for both current and former smokers. Results of cumulative lifetime smoking exposure demonstrated that even those with 2 pack-years of smoking had an increased risk of developing PPD within two years postpartum (HR: 1.44, 95 % CI: 1.29-1.60). Those who smoked >10 pack-years had the highest risk of developing PPD (HR: 1.86, 95 % CI: 1.14-3.04) compared to nonsmokers. CONCLUSION: Greater amount and duration of cigarette smoking in pre-pregnancy can increase the risk of PPD.

Development and Validation of the Self-Rating Suicide Risk Screening Questionnaire.

Since suicide is one of the major health problems worldwide, the goal of the present study is to develop a psychometrically sound suicide risk screening tool named Suicide Screening Questionnaire- Self-Rating (SSQ-SR) to quantify the risk of suicidal behavior. The development process includes item generation, item revision and refinement, and validation. A total sample of 2,238 adults in South Korea was used for analysis. The results of factor analysis showed that the SSQ-SR, containing 25 items, supported a three-factor model: "Situational factors," "Negative self-perceptions and mental health factors," and "Suicidal thoughts and behaviors." Also, SSQ-SR showed satisfying internal consistency, concurrent validity and discriminant validity. Lastly, the results of ROC analysis showed a cut-off point of 33.5 for the low-risk group and 36.5 for the high-risk group. Considering these results, the current results demonstrate the SSQ-SR is a valid scale and therefore can contribute to future suicide-related studies and prevention.

Comparing warning signs of suicide between suicide decedents with depression and those non-diagnosed psychiatric disorders.

OBJECTIVE: Early recognition of a high-risk group impending suicide is important. We aimed to compare warning signs depending on the nature of the psychiatric disorder and whether it was a documented diagnosis. METHODS: Data of suicide decedents were collected from police records from 2013 to 2017. We evaluate psychiatric symptoms and warning signs in three aspects (language, behavior, and affect) using the Korea-Psychological Autopsy Checklist for Police Records (K-PAC-PR). RESULTS: A total of 13,265 suicide decedents were recruited for this study. Of them, 66.9% of females and 46.7% of males diagnosed psychiatric disorders, with depressive disorder being the most common one. Warning signs were observed in 93.0% of suicide decedents. They were observed more in those who were diagnosed with psychiatric disorders, especially in those with a depressive disorder. "Talking about dying or suicide" was the most common warning sign in all groups, and "apathetic behavior" was the most related warning sign for depressive disorder. Especially for "talking about dying or suicide," the proportion of observed "within a week" was high, making it valuable as a warning sign. CONCLUSION: Warning signs were commonly found in suicide decedents regardless of gender. They were more common among the decedents diagnosed with psychiatric disorders, especially among those with a depressive disorder.

Psychological autopsy study comparing suicide decedents with and without a history of suicide attempts in a nationwide sample of South Korea.

The majority of suicide decedents die on their initial attempt. To bring attention to suicide decedents without a suicide attempt history, the current study explored their demographic, clinical, and suicide-related characteristics. The data were derived from the Korea National Investigation of Suicide Victims Study, which assessed all suicide cases from 2013 to 2017 recorded in police investigation reports. We compared suicide decedents with and without a history of nonfatal attempts using the Korea Psychological Autopsy Checklist for Police Records (K-PAC). Out of 5228 cases included in our study, 3147 (60.2%) died on their first suicide attempt. Demographically, those who were male, older than 65, employed, and married/widowed were more likely to die on their initial attempt. Clinically, those who died on their initial attempt were more likely to have never been diagnosed with psychiatric disorders, whereas those who died on a repeated attempt were more likely to have been diagnosed with mood disorders. In terms of suicide-related factors, experiencing relationship problems and complaining about physical discomfort were associated with dying on an initial attempt. Depressed affect, self-harming behaviors, and talking about suicide or death were associated with repeated attempts.

Effect of suicide prevention law and media guidelines on copycat suicide of general population following celebrity suicides in South Korea, 2005-2017.

OBJECTIVE: To prevent copycat suicides following media reporting of celebrity suicides, the South Korean government enacted a 'suicide prevention law' in 2012 and revised the media guidelines for suicide reporting in 2013. This study examined how these two regulatory measures affected suicide trends among the general population in South Korea. METHODS: We analyzed the individual effect estimates for the general population within 30 days following the media report of 24 celebrity suicides using multivariate negative binomial regression. We performed a meta-analysis to compute the pooled rate ratios of the two regulations. We examined the trends in daily suicides by month during three time intervals before and after enactment using an autoregressive model and tested their significance using a piecewise linear regression. RESULTS: Total suicides increased by 6.27 daily during the 30-day period after celebrity suicides. Compared with the 30 days prior to the reports on the suicide of 24 celebrities, the number of suicidal deaths in the general population increased by 13% during the 30 days after the reports were announced (pooled rate ratio 1.13, 95% confidence interval: 0.06-0.18; p < 0.001). There was a significant downward trend in the average daily suicide deaths, and no significant increase in suicide rates, after the enactment of the suicide prevention law (p < 0.001) and revision of the media guidelines (p = 0.014). CONCLUSIONS: Suicide prevention and media guidelines were effective in reducing the effect of celebrity suicides. In addition to regulating media reporting of celebrity suicide, measures are needed to address viral republication on social media and to prevent suicide among entertainers.

Predictive Factors Associated With Methods of Suicide: The Korean National Investigations of Suicide Victims (The KNIGHTS Study).

Background: Because the suicide mortality depends on the lethality of suicide methods, the identification and prediction of suicide methods are important for suicide prevention. Methods: Examination data of suicide decedents were collected based on police reports. Suicide decedents were divided into groups according to the suicide methods (hanging, gas poisoning, pesticide poisoning, jumping, drug poisoning, and drowning) they used. Predictive factors for each suicide method in comparison to other suicide methods were identified. Results: Among 23,647 subjects, hanging was the most common method of suicide. Regarding gas poisoning, the history of previous suicide attempt was a risk factor and being age of 65 or older was a protective factor. Being age of 65 or older showed a highly strong association with suicide by pesticide poisoning. Being age of 18 or younger and the presence of schizophrenia were associated with jumping. A history of psychiatric outpatient treatment was a risk factor for drug poisoning. Regarding suicide by drowning, schizophrenia was a risk factor, while being age of 65 or older was a protective factor. Limitations: Only eight out of a total of 17 regions in South Korea were examined and included in the data of this study. Also, the methods of suicide were defined as one method that directly caused the death, which could undermine other less fatal methods used. Conclusions: There were differences in predictive factors according to the method of suicide. Predicting the method of suicide in people at high risk for suicide stands to be an important strategy for suicide prevention in clinical settings.

Recent Updates on Electro-Convulsive Therapy in Patients with Depression.

OBJECTIVE: Electro-convulsive therapy (ECT) has been established as a treatment modality for patients with treatment-resistant depression and with some specific subtypes of depression. This narrative review intends to provide psychiatrists with the latest findings on the use of ECT in depression, devided into total eight sub-topics. METHODS: We searched PubMed for English-language articles using combined keywords and tried to analyze journals published from 1995-2020. RESULTS: Pharmacotherapy such as antidepressants or maintenance ECT is more effective than a placebo as prevention of recurrence after ECT. The use of ECT in treatment-resistant depression, depressed patients with suicidal risks, elderly depression, bipolar depression, psychotic depression, and depression during pregnancy or postpartum have therapeutic benefits. As possible mechanisms of ECT, the role of neurotransmitters such as serotonin, dopamine, gamma-aminobutyric acid (GABA), and other findings in the field of neurophysiology, neuro-immunology, and neurogenesis are also supported. CONCLUSION: ECT is evolving toward reducing cognitive side effects and maximizing therapeutic effects. If robust evidence for ECT through randomized controlled studies are more established and the mechanism of ECT gets further clarified, the scope of its use in the treatment of depression will be more expanded in the future.