Background. Postpartum depression (PPD) is common after childbirth. Previous reviews on the prevalence of PPD have mainly included results that relied on screening instruments or a mixture of such instruments and diagnostic interviews. In this study, we aimed to assess the prevalence of PPD based exclusively on studies using diagnostic interviews, as they provide the most reliable and valid approach for defining “caseness.” Methods. Using PubMed, Web of Science, Cochrane Library, Embase, CNKI, WANFANG DATA, and CBM up to September 18, 2022, we searched for original articles reporting data that could be used to calculate the prevalence of PPD based on diagnostic interviews. A random-effect meta-analysis model was then used to estimate the pooled prevalence. In addition, we assessed quality, heterogeneity, and publication bias across studies. Also, we did subgroup analyses to explore the pooled prevalence at different time points and settings. This study was registered with PROSPERO, CRD42021244539. Results. Of 17,115 articles retrieved, 54 studies were included (total sample women). The pooled prevalence of all depression and major depression within one year postpartum was 12.1% (95% CI 10.3%-14.1%; ) and 7.0% (95% CI 5.7%-8.4%; ), respectively. The peaks of all depression occurred during the first 6 months postpartum, especially 2-3 weeks and 6-8 weeks. Subgroup analyses showed that the prevalence of major depression was associated with the income level of countries (higher in low- and middle-income countries (LMICs) than in high-income countries (HICs)) and diagnostic criteria (higher using ICD than using DSM and RDC). No evidence of publication bias was found. Conclusions. Approximately one in eight postpartum women experiences a depressive condition, with one in fifteen suffering major depression. The pooled prevalence based on diagnostic interviews was lower than the existing consensus, which was largely based on self-reported screening instruments. The higher prevalence in LMICs underlines the importance of strengthening research and service provision among these populations.

Background: The effect of gender, age, and urban versus rural residence on suicide risk among people with different mental disorders is unknown.Aims: To estimate cohort-specific risk of suicide among people with different types of mental disorders using data from China's National Psychological Autopsy Study.Method: Logistic regression models estimated adjusted odd ratios (OR) in 895 suicides and 701 injury deaths.Results: The adjusted risk of suicide for mood disorders was highest (OR = 44.2) followed by that for other mental disorders (OR = 10.7), anxiety disorders (OR = 10.2), psychotic disorders (OR = 7.4), substance use disorders (2.7) and organic mental disorders (OR = 1.2). Risk of suicide among urban residents with any mental disorder was more than double that of rural residents (OR = 15.5v.7.6,P= 0.008).Conclusions: The suicide risk associated with mental illness varies by type of illness and by demographic cohort. Lower risk of suicide among rural residents with mental disorders highlights the importance of non-mental health approaches to the prevention and management of suicidal behaviour in rural areas of low- and middle-income countries.

Suicide risk and auditory hallucinations are common in schizophrenia, but less is known about its associations. This cross-sectional study aimed to determine whether the presence and severity of auditory hallucinations were associated with current suicidal ideation or behavior (CSIB) among patients with schizophrenia. We interviewed 299 individuals with schizophrenia and acute symptoms and reviewed their medical records. Measurement included the Psychotic Symptom Rating Scale (PSYRATS-AH), the Calgary Depression Scale for Schizophrenia (CDSS), and the Positive and Negative Syndrome Scale. Logistic regression and path analysis were used. The CSIB prevalence was higher among patients with current auditory hallucination than those without (19.5% vs. 8.6%, crude odds ratio = 2.58, p = .009). Lifetime auditory hallucination experience (adjusted odds ratio [AOR] = 3.81; 95% CI: 1.45–10.05) or current auditory hallucination experience (AOR = 3.22; 95% CI: 1.25–8.28) can elevate the likelihood of CSIB while controlling for depressive symptoms and lifetime suicide-attempt history. Among those with auditory hallucinations, the emotional score of the PSYRATS-AH was positively associated with the CDSS score and there was a small indirect effect of the CDSS score on the association between the emotional domain score and CSIB (bias-corrected 95% CI, 0.02–0.20). In conclusion, the presence of auditory hallucinations was strongly associated with CSIB, independent of depressive symptoms and lifetime suicide attempts. Suicide risk assessment should consider auditory hallucination experience and patients’ appraisal of its emotional characteristics. Future cohort studies are necessary to provide more conclusive evidence for the mediating pathways between auditory hallucinations and CSIB.

AimsThe 2014 World Health Organization report on global suicide identified large differences in the male-to-female ratio of suicide rates between countries: most high-income countries (HICs) report ratios of 3:1 or higher while many low- and middle-income countries (LMICs) – including China and India – report ratios of less than 1.5:1. Most authors suggest that gender-based social-cultural factors lead to higher rates of suicidal behaviour among women in LMICs and, thus, to relatively high female suicide rates. We aim to test an alternative hypothesis: differences in the method and case-fatality of suicidal behaviour – not differences in the rates of suicidal behaviour – are the main determinants of higher female suicide rates in LMICs.MethodsA prospective registry of suicide attempts treated in all 14 general hospitals in a rural county in China was established and data from the registry were integrated with population and mortality data from the same county from 2009 to 2014.ResultsThere were 160 suicides and 1010 medically-treated suicidal attempts in the county; 84% of female suicides and 58% of male suicides ingested pesticides while 73% of female attempted suicides and 72% of male attempted suicides ingested pesticides. The suicide rate (per 100 000 person-years of exposure) was 8.4 in females and 9.1 in males (M:F ratio = 1.08:1) while the incidence of ‘serious suicidal acts’ (i.e. those that result in death or received treatment in a hospital) was 81.5 in females and 47.7 in males (M:F ratio = 0.59:1). The case-fatality of serious suicidal acts was higher in males than in females (19 v. 10%), increased with age, was highest for violent methods (92%), intermediate for pesticide ingestion (13%) and lowest for other methods (5%).ConclusionsThe incidence of medically serious suicidal behaviour among females in rural China was similar to that reported in HICs, but the case-fatality was much higher, primarily because most suicidal acts involved the ingestion of pesticides, which had a higher case-fatality than methods commonly used by women in HICs. These findings do not support sociological explanations for the relatively high female suicide rate in China but, rather, suggest that gender-specific method choice and the case-fatality of different methods are more important determinants of the demographic profile of suicide rates. Further research that involves ongoing monitoring of the changing incidence, demographic profile and case-fatality of different suicidal methods in urban and rural parts of both LMICs and HICs is needed to confirm this hypothesis.

Objectives: This study aimed to assess the association of the quality scores of hotline psychological intervention and the reduction of subsequent suicidal acts among high suicidal risk callers. Methods: High-risk callers at a national crisis hotline service in China were recruited and prospectively followed for up to 3 months after receiving a hotline psychological intervention. The quality of the intervention was evaluated by supervisors who listened to the tape-recorded calls using the Counseling Skills Rating Scale for Psychological Support Hotlines, which assessed three counseling domains: process, attitude and communication skill. The primary outcome was the occurrence of suicidal acts during the follow-up period. Secondary outcomes were before versus after changes during the intake intervention call in hopefulness, psychological stress and suicide intention reported by the callers. Results: Over the 3-month follow-up, 45 of 778 high-risk callers reported 61 suicide attempts, and 3 other callers died by suicide. Subsequent suicidal act was significantly more common in callers classified as being at higher risk during the intake call. Higher scores on the quality of suicidality assessing of the Counseling Skills Rating Scale for Psychological Support Hotlines were associated with reduced risk of suicidal acts during follow-up (hazard ratio = 0.38, 95% confidence interval = [0.18, 0.85]). Higher scores on the communication skill domain were associated with increases in hopefulness (β = 0.09) after the intervention, and higher scores on the counseling process domain (β = −0.12) and higher suicidal risk scores (β = −0.12) were associated with decreased suicide intention after intervention. Conclusion: Several characteristics of a hotline intervention for suicide prevention were associated with decreased risk of suicidal acts during follow-up. Intervention skill training for hotline operators should emphasize these specific counseling skills.