Family environmental factors in at-risk mental states for psychosis

What Do Four Decades of Research Tell Us About the Association Between Childhood Adversity and Psychosis: An Updated and Extended Multi-Level Meta-Analysis

OBJECTIVE

Estimating the current association between childhood adversity and the risk of psychosis is crucial for prevention and intervention. We provided an updated synthesis of evidence from the past four decades, expanded the available data by investigating a broad array of adversity subtypes, and explored sex differences and the age of psychosis onset as relevant factors.

METHODS

We searched PubMed, EMBASE, PsycINFO, Web of Science, WANFANG, and CNKI, for case-control, cross-sectional and cohort studies on the association between adversity and psychotic symptoms/illness. Multi-level meta-analysis, prediction intervals calculation, and sensitivity analyses were conducted.

RESULTS

The main analysis included 183 study samples (N=349,265), with 119 case-control studies (15,186 cases; 14,879 controls), 51 cross-sectional studies (N=299,659), and 13 cohort studies (N=19,541). Significant associations between adversity and psychosis were observed across all study designs, yielding an overall odds ratio of 2.80 (95% CI=2.18, 3.60). Secondary analyses revealed that exposure to each adversity subtype increased the odds of psychosis, with the highest odds ratio (3.54 [95% CI=3.04, 4.13]) for emotional abuse, and the lowest odds ratio of (1.58 [95% CI=1.48, 1.68]) for parental antipathy. No statistically significant sex differences were observed, although the odds ratio for sexual abuse was higher for women. Onset of psychosis was earlier in adversity-exposed individuals (mean difference=-0.79 years, 95% CI=-1.47 to -0.12).

CONCLUSIONS

This is the largest meta-analysis to date on the association between childhood adversity and psychosis. The results have broad clinical implications, as they highlight the need for selective prevention of exposure to early adversities and the implementation of trauma-informed therapies in the treatment of psychosis.

Effectiveness and cost-effectiveness of community-based mental health services for individuals with severe mental illness in Iran: a systematic review and meta-analysis

BACKGROUND

Severe mental illness (SMI) imposes a substantial worldwide burden of disability, highlighting the need for comprehensive and adaptable mental health services. This study aims to assess the efficacy and cost-effectiveness of community-based mental health services (CBMHS) in reducing relapse and rehospitalization rates among individuals with SMI in Iran.

METHOD

A systematic review and meta-analysis were conducted. Medline, EMBASE, ISI, SCOPUS, and ProQuest were searched until December 2022. We focused on randomized controlled trials, quasi-experimental studies, or economic studies related to individuals with SMI. Out of 127 articles, 17 were selected for a full-text review. The primary outcomes were the severity of psychopathology, rehospitalization rates, and the mental health of caregivers. We also examined community-based interventions and their impact on various outcomes. Data extraction and risk of bias assessment were performed, and critical appraisal was conducted using JBI checklists. Meta-analysis was carried out using STATA software. (PROSPERO registration. CRD42022332660).

RESULT

Rehospitalization rates among patients who received CBMHS were significantly lower, with an odds ratio of 2.14 (95% CI: 1.44 to 3.19), indicating a 2.14 times lower likelihood than those who received treatment as usual. A reduction in psychopathology accompanied this, SMD: -0.31, 95% CI: -0.49 to -0.13, I2 = 40.23%). Moreover, there was a notable improvement in social skills (SMD: -0.7, 95% CI: -0.98 to -0.44, I2 = 0.00%). The burden on caregivers also decreased (SMD: -0.55, 95% CI: -0.99 to -0.1, I2 = 63.2). The Incremental Cost-Effectiveness Ratio (ICER) for QUALY was acceptable, albeit with a wide range of 613 to 8400 Dollars.

CONCLUSION

CBMHS has demonstrated effectiveness and efficiency in Iran as a developing country. Additionally, it shows promise in mitigating the shortage of acute psychiatry beds. Using multiple data collection tools poses a limitation regarding data consolidation and conducting a meta-analysis.

State of the art in psychological therapies for psychosis: Family interventions for psychosis

PURPOSE

It is a half-century since the coalescence of social psychiatry and systemic family therapy approaches started to inform condition-specific therapeutic work with families to reduce relapse and hospital readmission for people with schizophrenia. Today, family interventions are a cornerstone of international guidelines for the treatment of psychosis, and of workforce development initiatives. Effect sizes for clinical and economic outcomes are large, and the evidence base is robust and reliable, not only for outcomes but also for the underpinning theoretical models, which are coherent and consistent. Few, if any, psychological therapies, have so powerful a framework to drive widespread implementation. Nevertheless, delivery in clinical services is variable, often lagging behind that of individual cognitive behavioural therapy, notwithstanding its considerably weaker implementation framework. Our aim in this article is to formulate this translation failure and offer potential solutions.

METHOD

We summarise the model/intervention and supporting evidence, then consider why delivery remains problematic.

RESULTS

We highlight the inter-linked issues of conceptual confusion between and conflation of, different approaches to working with families; of addressing diagnostic uncertainty, complex comorbidity and adapting interventions for specific populations; and of translation from gold-standard research trial practice, through educational curricula and training programmes, to routine delivery in frontline services.

CONCLUSION

We present our view of clinical, research and workforce development priorities to address these issues and continue the collective effort, moving into the next half-century, to work more effectively with people with psychosis and their families, to further improve outcomes.

Psychosocial factors associated with the risk of developing psychosis in a Mexican general population sample

Epidemiological evidence has linked an array of sociodemographic and psychosocial factors with an increased risk of developing psychosis. However, research in samples from low- and middle-income countries is still scarce. This study used a Mexican sample to explore (i) sociodemographic and psychosocial differences between individuals with and without a positive screen for Clinical High-Risk for psychosis (CHR), and (ii) sociodemographic and psychosocial factors associated with screening positive for CHR. The sample consisted of 822 individuals from the general population who completed an online survey. Of the participants, 17.3% (n = 142) met the CHR screening criteria. Comparisons between those who screened positive (CHR-positive group) and those who did not (Non-CHR group) showed that participants in the CHR-positive group were younger, had a lower educational level, and reported more mental health problems than the Non-CHR group. Furthermore, relative to the Non-CHR group, the CHR-positive group had a greater prevalence of medium/high risk associated with cannabis use, a higher prevalence of adverse experiences (bullying, intimate partner violence, and experiencing a violent or unexpected death of a relative or friend), as well as higher levels of childhood maltreatment, poorer family functioning, and more distress associated with the COVID-19 pandemic. Groups did not differ in sex, marital/relationship status, occupation, and socio-economic status. Finally, when examined in multivariate analyses, the variables associated with screening positive for CHR were: having an unhealthy family functioning (OR = 2.75, 95%CI 1.69-4.46), a higher risk associated with cannabis use (OR = 2.75, 95%CI 1.63-4.64), a lower level of education (OR = 1.55, 95%CI 1.003-2.54), having experienced a major natural disaster (OR = 1.94, 95%CI 1.18-3.16), having experienced a violent or unexpected death of a relative or friend (OR = 1.85, 95%CI 1.22-2.81), higher levels of childhood emotional abuse (OR = 1.88, 95%CI 1.09-3.25), physical neglect (OR = 1.68, 95%CI 1.08-2.61), and physical abuse (OR = 1.66, 95%CI 1.05-2.61), and higher COVID-related distress (OR = 1.10, 95%CI 1.01-1.20). An older age was a protective factor for screening positive for CHR (OR = 0.96, 95%CI 0.92-0.99). Overall, the findings highlight the importance of examining potential psychosocial contributors to psychosis vulnerability across different sociocultural contexts to delineate risk and protective processes relevant to specific populations and better target preventive intervention efforts.