Prevalence Rates Of Mental Disorders Research Articles

ANXIETY, DEPRESSION, AND PSYCHOTROPIC DRUGS USAGE BY UNIVERSITY STUDENTS OF MEDICAL GROUP IN BASRA, IRAQ

Background: Psychological disease is strongly prevalent among college and university students worldwide with negative impacts on students’ life. Specifically, medical group students have long time of study with suffer from competitive ambience and sleep privation, that lead to out of the way from perfect learning environment. When medical students are abused psychotropic drugs that lead to defect on performance, health, life style and interpose with their concentration. Aim: to investigate the prevalence rate of depression and anxiety in university students of medical group in Basra, and estimate the rate and type of psychotropic drugs consumption by them. Method: The study data was collected from 376 students of medical group at College of Medicine, College of Dentistry and College of Pharmacy of Basra University by questionnaire forma. Results: The prevalence rate of mental disorders was low about and many factors that affected on psychiatric state of them like gender, age, Family and friends Relation, missing one of parents etc. Among medical group students that used sedatives and hypnotics about (46%) than other psychotropic drugs like serotonin-norepinephrine reuptake inhibitor (SNRIs) (42.9%) tricyclic antidepressants (21.4%), and atypical antipsychotic (7.1%). Conclusions: Medical group students are more likely to consumption antipsychotic drugs by physician prescription or self-medications. Therefore, there are required more interesting and pursuits for college students especially medical college students for amelioration their college and social lives. Peer Review History: Received 6 February 2024; Revised 15 March 2024; Accepted 26 April; Available online 15 May 2024 Academic Editor: Dr. Asia Selman Abdullah, Pharmacy institute, University of Basrah, Iraq, asia_abdullah65@yahoo.com Average Peer review marks at initial stage: 6.5/10 Average Peer review marks at publication stage: 7.0/10 Reviewers: Dr. A.A. Mgbahurike, University of Port Harcourt, Nigeria, amaka_mgbahurike@yahoo.com Prof. Hassan A.H. Al-Shamahy, Sana'a University, Yemen, shmahe@yemen.net.ye

A systematic review on the relationship between socioeconomic conditions and emotional disorder symptoms during Covid-19: unearthing the potential role of economic concerns and financial strain

BackgroundCovid-19 has disrupted the lives of many and resulted in high prevalence rates of mental disorders. Despite a vast amount of research into the social determinants of mental health during Covid-19, little is known about whether the results are consistent with the social gradient in mental health. Here we report a systematic review of studies that investigated how socioeconomic condition (SEC)—a multifaceted construct that measures a person’s socioeconomic standing in society, using indicators such as education and income, predicts emotional health (depression and anxiety) risk during the pandemic. Furthermore, we examined which classes of SEC indicators would best predict symptoms of emotional disorders.MethodsFollowing PRISMA guidelines, we conducted search over six databases, including Scopus, PubMed, etc., between November 4, 2021 and November 11, 2021 for studies that investigated how SEC indicators predict emotional health risks during Covid-19, after obtaining approval from PROSPERO (ID: CRD42021288508). Using Covidence as the platform, 362 articles (324 cross-sectional/repeated cross-sectional and 38 longitudinal) were included in this review according to the eligibility criteria. We categorized SEC indicators into ‘actual versus perceived’ and ‘static versus fluid’ classes to explore their differential effects on emotional health.ResultsOut of the 1479 SEC indicators used in these 362 studies, our results showed that 43.68% of the SEC indicators showed ‘expected’ results (i.e., higher SEC predicting better emotional health outcomes); 51.86% reported non-significant results and 4.46% reported the reverse. Economic concerns (67.16% expected results) and financial strains (64.16%) emerged as the best predictors while education (26.85%) and living conditions (30.14%) were the worst.ConclusionsThis review summarizes how different SEC indicators influenced emotional health risks across 98 countries, with a total of 5,677,007 participants, ranging from high to low-income countries. Our findings showed that not all SEC indicators were strongly predictive of emotional health risks. In fact, over half of the SEC indicators studied showed a null effect. We found that perceived and fluid SEC indicators, particularly economic concerns and financial strain could best predict depressive and anxiety symptoms. These findings have implications for policymakers to further understand how different SEC classes affect mental health during a pandemic in order to tackle associated social issues effectively.

Digitization and its Discontents: The Promise and Limitations of Digital Mental Health Interventions

AbstractThere is a mental health crisis in the United States that shows no signs of abating. Prevalence rates of mental disorders among both adults and children are rising and there are simply not enough mental health professionals to meet the growing demand. To address this problem, digital programs are being designed to diagnose and treat mental health conditions either adjunctively to a human clinician or as stand-alone treatments. Such developments hold great promise in ameliorating the mental health professional supply shortage. However, certain limitations of digital programs may prevent many users from desiring a digital psychotherapist. This paper surveys both the promise, and limitations, of digital psychotherapies.

Prevalence of mental disorders among Australian females: Comparison according to motherhood status using Australian birth cohort data.

Studies examining mental disorders among women have primarily focused on either depression, anxiety, or substance use disorders and not included the broader spectrum of mental disorders. Mixed evidence exists on the prevalence rates of mental disorders among mothers. This study compares the prevalence of different mental disorders and mental comorbidities between mothers and non-mothers and assesses correlates of mental disorders among mothers. A population-based birth cohort design was adopted, consisting of 40,416 females born in Queensland, Australia, in 1983/84. Linked administrative data from hospital admissions were used to identify mental disorders. Cumulative incidence curves of different mental disorders were created separately for mothers and non-mothers. Mental disorder prevalence among females by age 29-31years was 7.8% (11.0% for mothers and 5.2% for non-mothers). Mothers were overrepresented in almost all categories of mental disorders, with overrepresentation becoming more pronounced with age. Mothers with a mental disorder were more likely to be unmarried, Indigenous, young at birth of first child, have greater disadvantage, and have a single child, compared to mothers without a mental disorder. Nearly half of the mothers (46.9%) had received a mental disorder diagnosis before having their first child. Mothers, particularly unmarried, Indigenous, having greater disadvantage, and younger at birth of first child, represent a unique group with high vulnerability to mental disorders, that begins in childhood and is amplified with age. Presence of significant mental disorder comorbidities among females highlights the critical importance of a comprehensive, integrated approach to prevent and address multiple comorbidities.

Suicides among children, adolescents, and young adults during the COVID-19 pandemic - An analysis of police data from three German federal states

The COVID-19 pandemic severely affected young people, resulting in increased psychological distress and rising prevalence rates for mental disorders. There is concern that completed suicides have increased in addition to the observed increase in suicide attempts. The study is based on the police crime statistics (01/2017 to 12/2022) of three federal states in Germany, representing 13% of Germany's overall population. Suicide counts and rates for the child, teenage, adolescent, and young adult age groups were compared between the pre-pandemic and pandemic periods using chi-squared tests. 860 people under age 30 died from suicide. Suicide rates did not differ between the pre-pandemic and pandemic periods in any of the age groups studied. So far, there has been no discernible increase in suicides among young Germans. Ongoing suicide monitoring is recommended.

Are Mental Disorders Associated with Recidivism in Men Convicted of Sexual Offenses?

In offending populations, prevalence rates of mental disorders are much higher than in the general population. Nevertheless, it is unclear whether mental disorders can improve the prediction of recidivism beyond actuarial risk assessment tools. The present prospective-longitudinal study was conducted between 2001 and 2021 and included 1066 men convicted of sexual offenses in Austria. All participants were evaluated with actuarial risk assessment tools for the prediction of sexual and violent recidivism and the Structured Clinical Interview for Axis I and Axis II disorders. Sexual and violent reconvictions were assessed. Exhibitionism and an exclusive pedophilia showed the strongest correlations with sexual recidivism in the total sample. In the child related offense subsample additionally a narcissistic personality disorder was correlated with sexual recidivism. The strongest correlation with violent recidivism was found for an antisocial and borderline personality disorder. None of the mental disorders could improve the prediction of recidivism beyond actuarial risk assessment tools. Common current actuarial risk assessment tools revealed good predictive accuracy in men convicted of sexual offenses. With few exceptions mental disorders were only weakly associated with recidivism, suggesting that there is no direct link between mental disorders and violent and sexual reoffending. Mental disorders should nevertheless be considered in treatment issues.

Training in psychosomatic medicine and psychotherapy for medical doctors in China: A field report.

The high prevalence rates of mental disorders in China contrast a comparatively low care capacity from qualified trained medical doctors in the mental health field. The main objective of our cooperation project was to develop and implement advanced postgraduate training for medical doctors for their acquisition of knowledge, skills, and attitudes in the field of psychosomatic medicine and psychotherapy in China. Monitoring and evaluation as part of the advanced training in Beijing were conducted following the Kirkpatrick training approach using four levels of evaluation: reaction, learning, behavior and results. We performed a continuous course evaluation, assessed the respective learning goal attainment, conducted a pre-post evaluation of reasons and goals for participation in the training, and measured the treatment effects on the patient side. The implementation of training standards in the field of psychosomatic medicine and psychotherapy for medical doctors and the transfer of didactic knowledge and skills for Chinese lecturers were achieved. A total of 142 mainly medical doctors attended the 2-year training. Ten medical doctors were trained as future teachers. All learning goals were reached. The content and didactics of the curriculum were rated with an overall grade of 1.23 (1 = very good to 5 = very bad). The highest rated elements were patient life interviews, orientation on clinical practice and communication skills training. The achievement of learning objectives for each block (depression, anxiety disorders, somatic symptom disorder, coping with physical diseases) was rated between 1 and 2 (1 = very well achieved to 5 = not achieved) for all items from participants' perspectives. On the patient side (n = 415), emotional distress decreased and quality of life and the doctor-patient alliance improved significantly. Advanced training in psychosomatic medicine and psychotherapy was successfully implemented. The results of the evaluation show high participant satisfaction and the successful achievement of all learning objectives. A more detailed and extensive evaluation of the data, such as an analysis of the development of the participants as psychotherapists, is in preparation. The continuation of the training under Chinese guidance is guaranteed.

The effects of prevalence of inequalities in mental disorders between groups using Blinder- Oaxaca decomposition.

The prevalence of inequalities in sociodemographic factors in some mental disorders (MDs) has been shown in previous reports. The aim of this study was to assess the main contributors that affected prevalence of inequalities in MDs between groups. This was a cross-sectional study that was conducted on adults in 10 cities from Ilam province. We selected participants using cluster sampling; clusters were cities (n1 = 10), geographical area (n2 = 153), and households (n3 = 382). Screening tools and clinical interview were applied through standardized and validated questionnaires, namely, GHQ-28 and DSM-IV-TR, respectively. Participants were divided into socioeconomic groups via principal composition analysis (PCA). Blinder-Oaxaca approach was applied to distinguish the gap in inequalities between groups. The prevalence of MDs in the advantage group was 22.6% and, in disadvantages was 35.6%. The concentration index (CI) of the MD prevalence rate was -0.013 (95% CI: -0.022, -0.004) which indicated that MDs were more common in the disadvantaged groups. The odds of MDs in advantaged people was 81% more compared to the disadvantaged group (OR: 1.81; 95% CI: 1.28, 2.57), also in females compared to males (1.60; 95% CI: 1.21, 2.24). Analysis of gap inequality between groups showed that the gap in prevalence rates of MDs between groups was 12%. This study revealed a socioeconomic inequality in MD rates in the adult population. Therefore, results of this study provide contributors in MDs inequality in order to control and reduce the prevalence of MDs in the community.

A systematic review and meta-analysis on the prevalence of mental disorders among children and adolescents in Europe.

Most mental disorders appear by age 14, but in most cases, they remain undiagnosed and untreated well into adulthood. A scoping review showed an absence of systematic reviews that address prevalence rates of mental disorders among children and adolescents in Europe that are based on community studies conducted between 2015 and 2020. To estimate the updated pooled prevalence of Anxiety Disorder, Depressive Disorder, Attention Deficit Hyperactivity Disorder (ADHD), Conduct Disorder (CD), Oppositional Defiant Disorder (ODD), Autism Spectrum Disorder, Eating Disorders, Substance Use Disorders (SUD), among children and adolescents living in Europe, a search strategy was conducted using MEDLINE, Embase and Psych Info and studies were also identified from reference lists and gray literature. Eligible studies were evaluated for reliability, validity, and bias. Trends of prevalence rates for each mental disorder were calculated. Almost one in five young people in Europe were found to suffer from a mental disorder, with a pooled prevalence rate of 15.5%. Anxiety disorders had the highest pooled prevalence rate (7.9% (95% CI 5.1-11.8%, I2: 98.0%)), followed by ADHD (2.9% (95% CI 1.2-6.9%, I2 = 94.3%)), ODD (1.9% (95% CI 1.0-3.7%, I2 = 98.4%)), depressive disorder (1.7% (95% CI 1.0-2.9%, I2 = 97.7%)), CD (1.5% (95% CI 0.6-3.8%, I2 = 98.8%)) and ASD (1.4% (95% CI 0.4-5.4%, I2 = 99.7%). No studies on SUD were identified. The mental health of children and adolescents may be improved by introducing routine screening, refining diagnostic sensitivity, raising awareness of mental disorders, minimizing stigma and socioeconomic inequality, as well as developing early intervention services. These facilitators of good mental health need to be prioritized, especially at a time of unprecedented risk factors for poor mental health.

Socioeconomic status and access to psychotherapy.

Individuals with low socioeconomic status (SES) have significantly higher prevalence rates of mental disorders than those with higher SES, but are less likely to receive treatment. Studies from the United States show that individuals with higher SES are more likely to be offered a therapy place than those with low SES. In Germany, where the public health care system is without financial barriers, studies on access to treatment are lacking. The present study investigated whether the SES of persons seeking psychotherapeutic help in Germany influences psychotherapists' decision to provide access to treatment. For this purpose, 504 licensed outpatient psychological psychotherapists participated in an online study, in which they read a series of case vignettes and rated how likely they would be to offer treatment in each case. SES was operationalized by occupation and language use. Additionally, we investigated whether treatment offers were affected by the disorder and the gender of the help seeker, the therapists' socioeconomic background, and other characteristics in interaction with SES. Bonferroni-corrected multifactorial repeated measures analysis of variances (ANOVAs) and mixed ANOVAs were calculated. Help seekers with low SES were 4.1% less likely to be offered treatment than those with moderate to high SES (F (1, 503) = 115.64; p = 0.000; η² = 0.187). The influence of SES on the probability of a therapy place offer varied significantly depending on the patient's disorder (p = 0.000): SES had a greater effect for bulimia than for depression and social anxiety disorder. Overall, the effect was small (η² = 0.026). No significant interaction between the gender of potential clients and SES was found (p = 0.062). The influence of SES on treatment accessibility varied depending on the therapeutic method for which the therapist was licensed and on the social status of the district in which the therapist's practice was located. The therapist's socioeconomic background (parental SES) did not interact with the potential client's SES. Therapist biases contributing to unequal access to treatment for individuals with low SES and other characteristics can aggravate mental health care disparities. Even though the effects we found were relatively modest, awareness of the association between SES and offers of therapy places might help practitioners to reflect on their own selection practices.

Comparing mental health status and COVID-19 event impact between survivors and the general population during the second wave of the pandemic in Iran.

Background and AimThe coronavirus disease 2019 (COVID‐19) pandemic has to date overwhelmed the survivors and the general population. The present study aimed to compare the mental health status and the COVID‐19 event impact between the survivors and the general population in Mazandaran Province, Northern Iran.DesignA web‐based cross‐sectional survey was used.MethodsThis study was performed using convenience sampling.ResultsIn total, 1,766 participants were included in this study. The findings revealed that the posttraumatic stress disorder (PTSD) severity in both outpatient and hospitalized groups was significantly higher than that in the general population. Besides, the levels of anxiety and depression in the group receiving inpatient care and treatment had significantly elevated than those in the general population.ConclusionGiven the high prevalence rate of mental disorders, healthcare professionals are recommended to plan for various interventions and support services to boost community mental health status.

Barriers to Seeking Psychotherapy for Mental Health Problems in Adolescents: a mixed method study

Given the large discrepancy between prevalence rates of mental disorders in adolescents and actual treatment rates, there is a need to understand what prevents this age group from seeking psychotherapy. We assessed the barriers to seeking psychotherapy in this age group, including their attitudes toward people with a mental disorder, using a convergent parallel mixed-methods design. Participants were 288 adolescents aged 12–21 years (M = 16.8 years, SD = 2.3; 37% identified as male, 63% as female, and 0% as nonbinary). Qualitative data were obtained with open-ended questions on barriers to initiating psychotherapy and attitudes toward people with a mental disorder. Barriers to seeking psychotherapy and information about psychotherapy were assessed with a questionnaire using a quantitative design. The qualitative assessment revealed as the main barriers fear of a negative interaction with a psychotherapist, fear of being confronted with their own emotions, self-stigma, and fear of public stigma. Further, lack of accessibility, lack of trust in the therapist, a desire for social distance from, and a negative attitude toward people with a mental disorder were associated with a decreased intention to initiate psychotherapy. Previous positive experience with a psychotherapist was a facilitator of seeking psychotherapy. We found gender differences, with higher desire for social distance and higher optimism bias scores as well as poorer mental health knowledge for participants identifying as male. Integrating results from both approaches results in further information for the improvement of prevention programs and interventions to lower barriers to seeking psychotherapy. Gender differences indicate a need for gender-role-specific interventions.

A comparative review of the epidemiology of mental disorders in Australia and India.

Mental illness and substance use disorders have been increasing worldwide. Mental illness has a significant impact upon the lives of the individual as well as their loved ones. Mental disorders are known to result in a high level of disability. This article provides a comparative review of the epidemiology of mental disorders in Australia and India, summarizing and comparing prevalence rates in both countries based upon available data. Overall, it is evident that Australia has higher prevalence rates of mental disorders than India, across most diagnostic groups. Australia has the highest prevalence of anxiety disorders whereas India has the highest prevalence of substance use disorders; including tobacco use disorders. The next most prevalent mental disorders in India are depressive disorders. However, there are demographic parameters such as gender and age as well as service-provision differences across the countries that need to be factored into any interpretation of the data. There are also problems associated with different diagnostic instruments with language and cultural nuances that may impact comparisons. We suggest that a joint epidemiological survey between the two countries would help better understand and delineate the key similarities pertaining to the epidemiology of mental disorders in Australia and India. This will in turn assist with the development of policy and treatment of mental disorders.

Mental health outcomes in Syrian refugees: A systematic review.

Syria is the main country of origin for refugees in the world. The prevalence of mental disorders in this population is high, but there is a lack of more comprehensive data on mental health issues in this population. This study aims to review the literature for mental health outcomes in Syrian refugees. We performed a systematic quantitative literature review of original observational studies indexed on the MEDLINE via PubMed, Embase, Web of Science, PsycINFO, LILACS, and SciELO databases with quantitative data reporting mental health outcomes in Syrian refugees. A descriptive analysis was conducted, and the quality of the included studies was assessed using an adaptation from The National Institutes of Health (NIH) quality assessment tool for observational studies. The Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines were followed. A total of 64 studies were included. The majority were published between 2019 and 2020, and focused on the prevalence of post-traumatic stress disorder (PTSD), depression, and anxiety, with a wide range of variations. Other outcomes were difficulties in the post-migration period and promotive factors for mental health, such as resilience, positive coping strategies, and psychosocial well-being. High prevalence rates of mental disorders were observed, as well as risk factors for their occurrence. Studies showed a very high variability of prevalence rates and heterogeneity in methodologies. There is a need for research focusing on other determinants and specific necessities for mental health, especially in the post-resettlement period.

Prevalence and Risk Factors Associated with Postpartum Depression during the COVID-19 Pandemic: A Literature Review and Meta-Analysis.

Background: Owing to the high prevalence and detrimental consequences, postpartum depression (PPD) has been identified as one of the severe global public health issues in the last decade. Prior research found that during disasters or events, the prevalence rates of mental disorders among postpartum women are significantly high. However, the effect of the coronavirus disease 2019 (COVID-19) pandemic on PPD and its risk factors remained unclear for postpartum women. Therefore, the present systematic review and meta-analysis aimed to estimate the influence of the COVID-19 pandemic on the prevalence of PPD and to summarize risk factors for PPD during the COVID-19 pandemic. Methods: Three electronic databases of MEDLINE, EMBASE, and Cochrane library databases were systematically searched for articles from their commencements until 1 November 2021. Quality assessment of included studies, random-effects meta-analysis, and sensitivity analysis were performed. Results: A total of eight studies with 6480 postpartum women during the COVID-19 pandemic were included, and most studies were conducted in developed countries. The pooled prevalence of PPD was 34% (95% CI: 21–46%) during the COVID-19 pandemic, much higher than the incident of previous research during the non-pandemic period. Risk factors for PPD during the COVID-19 pandemic were defined as socio-demographic and clinical characteristics, stress and anxiety, lack of various supports, and the COVID-19 related factors. Conclusion: The research findings indicated that the COVID-19 pandemic could make detrimental effects on maternal mental wellbeing among women after childbirth. Investigating the prevalence and risk factors of PPD among postpartum women could shed some light on their mental and emotional states; so that support measures and tailored interventions from health professionals and policymakers could be offered to improve the maternal and infant outcomes, especially during the COVID-19 pandemic. Much more research on maternal psychological wellbeing during the COVID-19 pandemic was strongly recommended to undertake in the middle and low-income countries.

Health and Well-Being of Refugee Children and Adolescents

Health and Well-Being of Refugee Children and Adolescents

Prevalence of mental disorders in patients with cancer compared to matched controls – secondary analysis of two nationally representative surveys

Aim To compare prevalence rates of mental disorders in patients with cancer and general population controls. Method In two stratified nationally representative surveys, the 12-month prevalence of mental disorders was assessed in 2141 patients with cancer and 4883 general population controls by the standardized Composite International Diagnostic Interview (CIDI). We determined odds ratios (ORs) to compare the odds for mental disorders (combined and subtypes) in cancer patients with age- and gender-matched controls. Results The 12-month prevalences rate for any mental disorder was significantly higher in patients with cancer compared to controls (OR 1.28, 95% CI 1.14–1.45). Prevalence rates were at least two times higher for unipolar mood disorders (major depression: OR 2.07, 95% CI 1.71–2.51; dysthymia: OR 2.93, 95% CI 2.13–4.02) and mental disorders due to a general medical condition (OR 3.31, 95% CI 2.32–4.71). There was no significant elevation for anxiety disorders overall (OR 0.95, 95% CI 0.81–1.11). Mildly elevated prevalence rates emerged for post-traumatic stress disorder (OR 1.57, 95% CI 1.11–2.23) and social phobia (OR 1.57, 95% CI 1.07–2.31), while specific phobia (OR 0.82, 95% CI 0.67–1.00) and agoraphobia (OR 0.49, 95% CI 0.33–0.73) were significantly less frequent in cancer. Conclusions While elevated depression rates reinforce the need for its systematic diagnosis and treatment, lower prevalences were unexpected given previous evidence. Whether realistic illness-related fears and worries contribute to lower occurrence of anxiety disorders with excessive fears in cancer may be of interest to future research.

Striving for Happily Ever After: Supportive Interventions for Youth Leaving Residential Placement. A Systematic Review of Reviews.

Youth who reenter communities after forensic or residential care are overrepresented in prevalence rates for mental disorders, delinquency, incarceration, low academic achievement, and unemployment. Supportive interventions that aid youth in the reentry to their communities can be crucial for successful reintegration. In systematic reviews (SR) on this topic, only specific interventions or programs are described. Therefore, a summary of evidence about transitional interventions for various groups of reentry youth is needed. This overview of SRs was preregistered in PROSPERO. We searched PsycINFO, Ovid MEDLINE, Cochrane Library, Campbell Library, Web of Science, Sociological Abstracts, Criminal Justice Abstracts, Social Care Online, and Epistemonikos. SRs that fit the search criteria were evaluated using the AMSTAR checklist for methodological quality and the GRADE tool for assessing confidence in effect estimates. We screened 2,349 publications for eligibility. Eight SRs were included for analysis. The methodological quality of five SRs was critically low, two were of low quality, and one was of moderate quality. Recidivism was reported as the only outcome in five SRs. Detrimental outcomes were reported in five SRs. Confidence in effect estimates was low or very low for all outcomes. Ninety-five percent of primary study populations were from the United States. We offer a rigorous appraisal of SRs on transitional interventions. The gaps of knowledge are vast regarding what works, how it works, and for whom. Development of a knowledge base should include defining the term 'recidivism', systematic reporting of demographics, and identifying effective common elements.

The prevalence of mental disorders among homeless people in high-income countries: An updated systematic review and meta-regression analysis.

Homelessness continues to be a pressing public health concern in many countries, and mental disorders in homeless persons contribute to their high rates of morbidity and mortality. Many primary studies have estimated prevalence rates for mental disorders in homeless individuals. We conducted a systematic review and meta-analysis of studies on the prevalence of any mental disorder and major psychiatric diagnoses in clearly defined homeless populations in any high-income country. We systematically searched for observational studies that estimated prevalence rates of mental disorders in samples of homeless individuals, using Medline, Embase, PsycInfo, and Google Scholar. We updated a previous systematic review and meta-analysis conducted in 2007, and searched until 1 April 2021. Studies were included if they sampled exclusively homeless persons, diagnosed mental disorders by standardized criteria using validated methods, provided point or up to 12-month prevalence rates, and were conducted in high-income countries. We identified 39 publications with a total of 8,049 participants. Study quality was assessed using the JBI critical appraisal tool for prevalence studies and a risk of bias tool. Random effects meta-analyses of prevalence rates were conducted, and heterogeneity was assessed by meta-regression analyses. The mean prevalence of any current mental disorder was estimated at 76.2% (95% CI 64.0% to 86.6%). The most common diagnostic categories were alcohol use disorders, at 36.7% (95% CI 27.7% to 46.2%), and drug use disorders, at 21.7% (95% CI 13.1% to 31.7%), followed by schizophrenia spectrum disorders (12.4% [95% CI 9.5% to 15.7%]) and major depression (12.6% [95% CI 8.0% to 18.2%]). We found substantial heterogeneity in prevalence rates between studies, which was partially explained by sampling method, study location, and the sex distribution of participants. Limitations included lack of information on certain subpopulations (e.g., women and immigrants) and unmet healthcare needs. Public health and policy interventions to improve the health of homeless persons should consider the pattern and extent of psychiatric morbidity. Our findings suggest that the burden of psychiatric morbidity in homeless persons is substantial, and should lead to regular reviews of how healthcare services assess, treat, and follow up homeless people. The high burden of substance use disorders and schizophrenia spectrum disorders need particular attention in service development. This systematic review and meta-analysis has been registered with PROSPERO (CRD42018085216). PROSPERO CRD42018085216.

Mental disorders among adults formerly in out-of-home care: a systematic review and meta-analysis of longitudinal studies

While children and adolescents placed in child welfare or juvenile justice out-of-home care show higher prevalence rates of mental disorders compared to the general population, it remains unclear whether this pattern persists into adulthood. A quantitative synthesis of existing studies is lacking. The aim of this meta-analysis was to estimate the prevalence rates for mental disorders among adults with a foster or residential child welfare or juvenile justice care history, comparing them where possible to rates among the general population. PubMed, PsycInfo, EMBASE, and Web of Science were systematically searched for epidemiological studies published up to 28 October 2020. Nineteen studies, totaling 604,257 participants, met our inclusion criteria. Random-effects models were used for prevalence rates and odds ratios (OR) of mental disorders, and study quality was rated. A prevalence rate of 30% [95% CI (23.36, 37.36)] for any mental disorder in adults with a child welfare care history was found (3–17% for specific disorders). A prevalence rate of 45% [95% CI (42.38, 47.38)] for any mental disorder was found in adults with a juvenile justice care history (6–66% for specific disorders). For out-of-home placement history, adult mental disorders were significantly higher than in the general population (OR = 1.33–2.76). Studies differed in terms of methodology and the disorder groups considered, so heterogeneity between effect sizes ranged from low to high. Our findings suggest that the high risk that mental health issues will persist in adults with an out-of-home placement history needs to be taken seriously in the transition from adolescence to adulthood. The care systems involved need to collaborate and to be aware of these risks.