Mood disorders in first- and second-generation immigrants: systematic review and meta-analysis

Meta-Analysis of Acculturation and Suicide-Related Outcomes: A Test of the Immigrant Paradox

OBJECTIVE

This meta-analysis aimed to systematically test the relation between acculturation and suicide-related outcomes among immigrants, with attention to key methodological (i.e., measure of suicide-related outcome, measure of acculturation) and demographic (i.e., race, gender, age, geographic region, publication year) moderators.

METHOD

We conducted a meta-analysis of 72 independent samples from 50 studies (38 peer-reviewed articles, 12 dissertations) representing more than 1.4 million immigrants. Participants' age ranged from 11.20 to 74.70 years (M = 29.96, SD = 15.07). Random effects models were used for both main and moderation analyses.

RESULTS

We found significant positive associations between acculturation and suicidal ideation, but not suicide attempts and deaths. We also found a significant and positive effect of acculturation on suicide-related outcomes when acculturation was measured by psychological scales, but not by generation status, length of residence in the host country, and proficiency in the host country's language. More acculturated Latinx immigrants were at higher risk for suicide-related outcomes, whereas a reverse pattern was found among Asian immigrants. Meta-regressions revealed that the moderating effects of participants' age and publication year were also significant.

CONCLUSION

Our results show partial support for the immigrant paradox but suggest that the relation between acculturation and suicide-related outcomes is complex and multifaceted. We discuss the implications of our findings and recommendations for research and prevention.

Criminological and Psychiatric Profiles of Immigrant and Refugee Offenders: A Retrospective Analysis of Cases in a Forensic Setting

This study aimed to scrutinize the characteristics of immigrant and refugee offenders within our institution, focusing on factors such as immigrant status, country of birth, duration of residence in Turkey, as well as psychiatric, socio-demographic, and criminal profiles. The data were obtained through a retrospective examination of case records referred to the Observation Department of the Council of Forensic Medicine for the assessment of criminal responsibility between 2017 and 2022. The study categorized the cases into two groups: refugees and immigrants, comprising 35 and 22 offenders, respectively. Significant differences in educational levels were identified between immigrants and refugees within our study group (p < .001). Notably, drug use disorders were more prevalent among refugees, whereas alcohol use disorders were more common among immigrants, with statistical significance (p < .005). During forensic psychiatric assessments, 57.1% of refugees and 54.5% of immigrants required interpretation services. The most prevalent offense in the refugee group was homicide (37.1%), followed by child sexual abuse (28.6%). In contrast, homicide (31.8%) and theft and extortion (22.7%) were the most common offenses for the immigrant group. Six cases (10.5%) were judged to have reduced or no criminal liability. Among the cases, 52.6% had a history of prior outpatient psychiatric referrals, with the most frequent diagnosis being atypical psychosis at 10.5%. The findings underscore the necessity for additional research and targeted interventions to address the mental health and criminological complexities confronted by this vulnerable population.

Influence of biopsychosocial factors on self-reported anxiety/depression symptoms among first-generation immigrant population in the U.S

BACKGROUND

Despite increasing studies on mental health among immigrants, there are limited studies using nationally representative samples to examine immigrants' mental health and its potential biopsychosocial contributing factors, especially during the COVID-19 pandemic. We explored and estimated the influence of life satisfaction, social/emotional support, and other biopsychosocial factors on self-reported anxiety/depression symptoms among a nationally representative sample of first-generation immigrants in the U.S.

METHODS

We conducted a secondary data analysis using the 2021 National Health Interview Survey among first-generation adults aged ≥ 18 years (n = 4295). We applied survey weights and developed multivariable logistic regression model to evaluate the study objective.

RESULTS

The prevalence of daily, weekly, or monthly anxiety/depression symptoms was 10.22% in the first-generation immigrant population. There were 2.04% daily, 3.27% weekly, and 4.91% monthly anxiety/depression among the population: about 8.20%, 9.94%, and 9.60% experienced anxiety symptoms, whereas 2.49%, 3.54%, and 5.34% experienced depression symptoms daily, weekly, and monthly, respectively. The first-generation population aged 26-49 years were less likely to experience anxiety/depression daily, weekly, or monthly compared to those aged 18-25. Females (versus males) were more likely to experience anxiety/depression daily, weekly, or monthly. Those who identified as gay/lesbian had higher odds of experiencing anxiety/depression daily, weekly, or monthly compared to heterosexual persons. Relative to non-Hispanic White individuals, non-Hispanic Asian, Black/African American, and Hispanic individuals had lower odds, while other/multi-racial/ethnic groups were more likely to experience anxiety/depression daily, weekly, or monthly. A higher life satisfaction score was associated with lower odds of experiencing anxiety/depression daily, weekly, or monthly. Having social/emotional support sometimes/rarely or using healthcare within the past one/two years was associated with experiencing anxiety/depression daily, weekly, or monthly.

CONCLUSIONS

The findings reveal significant burden of anxiety and depression among first-generation population in the U.S., with higher risks among subgroups like young adults, females, sexual minorities, and non-Hispanic White and other/multi-racial individuals. Additionally, individuals with lower life satisfaction scores, limited social/emotional support, or healthcare utilization in the past one or two years present increased risk. These findings highlight the need for personalized mental health screening and interventions for first-generation individuals in the U.S. based on their diversity and health-related risks.

De-Salazar P, Alegría M. Association of sociocultural stressors with bipolar disorder onset in Puerto Rican youth growing up as members of a minoritized ethnic group: results from the Boricua Youth Longitudinal Study

Background

The development of bipolar disorder is currently explained by a complex interaction of genetic and environmental factors. Less is known regarding the influence of sociocultural factors. This study aims to evaluate the incidence and impact of sociocultural factors on bipolar disorder onset in two comparable samples of youth growing up in different social settings.

Methods

We leveraged data from two urban population-based cohorts representative of Puerto Rican children growing up in either San Juan (Puerto Rico) or the South Bronx (NYC) and followed up for 17 years. Bipolar disorder diagnoses were based on retrospective self-reports on the World Health Organization Composite International Diagnostic Interview. We used a causal inference approach to estimate associations of sociocultural factors with bipolar disorder onset after adjusting for potential confounders.

Findings

We found that South Bronx children, who grew up as a minoritized group, had twice the risk of bipolar disorder onset as young adults, with an incidence rate of 2.22 new cases per 1000 person-years compared to 1.08 new cases in San Juan (incidence rate difference, 1.13; 95% CI, 0.09-1.20). After adjusting for potential confounders, South Bronx children had the same lifetime hazard of bipolar disorder onset compared to San Juan children. However, our analysis demonstrated that caregivers' exposure to societal cultural stress partially explained the increased risk of bipolar disorder onset in the South Bronx, in addition to the potential contribution of genetics.

Interpretation

Our results provide evidence that societal cultural stress can increase the risk of lifetime bipolar disorder onset in youth growing up as a minoritized group. Addressing stress in minoritized groups might reduce the risk of bipolar disorder onset.

Funding

The Boricua Youth Study has been supported by the National Institutes of HealthMH56401, MH098374, DA033172, and AA020191. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the article.

Unintentional Discrimination Against Patients with a Migration Background by General Practitioners in Mental Health Management: An Experimental Study

Populations with a migration background have a higher prevalence of mental health problems than their native counterparts. They are also more likely to have unmet medical needs and are less frequently referred to mental health services. One potential explanation for this is that physicians, such as general practitioners (GPs), may unintentionally discriminate against migrant patients, particularly when they lack humanization. To date, no experimental study has investigated this hypothesis. This paper assesses the influence of humanization on GPs' discriminatory decisions regarding migrant patients with depression. A balanced 2 × 2 factorial experiment was carried out with Belgian GPs (N = 797) who received video-vignettes depicting either a native patient or a migrant patient with depression. Half of the respondents were exposed to a text that humanized the patient by providing more details about the patient's life story. Decisions related to diagnosis, treatment and referral were collected, as well as the time spent on each video and text, and were analysed using ANOVA. Migrant patients' symptoms were judged to be less severe than those of native patients (F = 7.71, p < 0.05). For almost all treatments, the decision was less favourable for the migrant patient. Humanization had little effect on medical decisions. We observed that GPs spent significantly more time on the vignette with the humanization intervention, especially for the migrant patients. The results indicate that ethnic differences in the management of depression persist in primary care. Humanization, however, does not mitigate those differences in medical decisions.

Racial/Ethnic Differences in the Association Between Food Security and Depressive Symptoms Among Adult Foreign-Born Immigrants in the US: A Cross-Sectional Study

Foreign-born immigrants are at greater risks of both food insecurity and depressive symptoms, while the association between the two has yet to be elucidated. Our sample includes 6,857 adults aged 20 years and older from the National Health and Nutrition Examination Survey (NHANES) from 2005 to 2016. Multivariable logistic regression was used to examine whether the association between food security and depressive symptoms varies across race/ethnicity among US foreign-born immigrants. The prevalence of depressive symptoms was 9.6% and 15.7% for low food security (LFS) and very low food security (VLFS). The adjust odds ratios (aORs) of depressive symptoms among Mexican American and Other Hispanic immigrants with VLFS were 2.66 (95% Confidence interval [CI]: 1.61, 4.38) and 2.05 (95% CI: 1.08, 3.86) as compared to those with full food security (FFS). Race/ethnicity may modify the association between food security and depressive symptoms among US foreign-born immigrants and a dose-response relationship was indicated among Hispanic and Other Race immigrants.

Deconstructing Cultural Aspects of Mental Health Care in Hispanic/Latinx People

In the United States, 18.9% of the population identifies as Hispanic or Latin. The culture of these communities is as diverse, heterogenous, and rich as the history of this population. Culture shapes the perception of symptoms and psychiatric disorders. To provide culturally sensitive care, it is relevant to understand the history of these communities in the US, recognize cultural humility, and acknowledge aspects and values (eg, culturally bound syndromes, familism, paternalism, stigma of mental illness, machismo, immigration) inherent to the cultural experience and unique barriers to care. Incorporating these aspects into clinical practice is essential for positive outcomes. The purpose of this article is to give a brief historical context, encourage cultural humility, and describe cultural aspects that are essential when providing culturally sensitive care to the Hispanic and Latinx community in the US.

Migrant status, clinical symptoms and functional outcome in youth at clinical high risk for psychosis: findings from the NAPLS-3 study

PURPOSE

Migrant status is a known risk factor for psychosis, but the underlying causes of this vulnerability are poorly understood. Recently, studies have begun to explore whether migrant status predicts transition to psychosis in individuals at clinical high risk (CHR) for psychosis. Results, however, have been inconclusive. The present study assessed the impact of migrant status on clinical symptoms and functional outcome in individuals at CHR for psychosis who took part in the NAPLS-3 study.

METHODS

Participants' migrant status was classified as native-born, first-generation, or second-generation migrant. Clinical symptoms were assessed using the Structured Interview for Psychosis-Risk Syndromes (SIPS); functional outcome was measured using the Global Functioning Scales:Social and Role (GF:S; GF:R). Assessments were conducted at baseline, 12-months, 18-months, and 24-months follow-up. Generalized linear mixed models for repeated measures were used to examine changes over time and differences between groups.

RESULTS

The overall sample included 710 individuals at CHR for psychosis (54.2% males; Age: M = 18.19; SD = 4.04). A mixed model analysis was conducted, and no significant differences between groups in symptoms or functioning were observed at any time point. Over time, significant improvement in symptoms and functioning was observed within each group. Transition rates did not differ across groups.

CONCLUSION

We discuss potential factors that might explain the lack of group differences. Overall, migrants are a heterogeneous population. Discerning the impact of migration from that of neighborhood ethnic density, social disadvantage or socio-economic status of different ethnic groups could help better understand vulnerability and resilience to psychosis.

The prevalence of anxiety, depression, and post-traumatic stress disorder among African migrants: A systematic review and meta-analysis

BACKGROUND

Evidence exists reporting a high mental health burden among migrants globally. However, there is no global estimate of mental ill-health among African migrants despite their adverse pre-migration environments. This systematic review and meta-analysis summarise the current scholarship regarding the prevalence of anxiety, depression and Post-traumatic Stress Disorder (PTSD) in the global African migrant population.

METHODS

We searched six databases (Medline (EBSCOHost), PsycINFO (EBSCOHost), Web of Science, PubMed, Scopus and Cumulative Index to Nursing and Allied Health (CINAHL) from 1st January 2000 to 31st August 2021. We screened retrieved articles using strict inclusion and exclusion criteria. Study quality was assessed using the Joanna Briggs Institute Critical Appraisal tools. Random-effects meta-analyses were employed using DerSimonian and Laird estimator based on inverse variance weights. The I² statistic was used to measure heterogeneity.

RESULTS

Our search retrieved 1091 articles, of which 46 were included representing a total of 28,367 African migrants. The weighted mean age of African migrants was 32.98 years, and nearly half were male (n= 12852, 45.31%). Among the included studies, almost nine out of ten (n=41, 89.1%) were cross-sectional studies. The pooled prevalence of anxiety, depression and PTSD was 34.60%;95%CI (26.30-43.00), 33.20%;95%CI (27.70-38.37) and 37.9%;95%CI (23.5- 52.4) respectively. Significant heterogeneity (I² >98%) existed in the prevalence estimates for anxiety, depression, and PTSD. Sub-group analyses indicate a significantly higher prevalence of anxiety and depression but PTSD for studies conducted in Africa than outside Africa. Similarly, higher prevalence rates for anxiety, depression, and PTSD were seen in studies that used a screening tool than in those that used a diagnostic tool, although a significant difference was observed for depression only.

CONCLUSION

Despite significant heterogeneity among included studies, our systematic review and meta-analysis show a high prevalence of anxiety, depression, and PTSD among African migrants. Our findings underscore the need to develop and implement serious, culturally appropriate mental health interventions that address post-migration stressors that increase their risk of mental ill-health and successful integration into host communities.

Discussing the unspoken: A qualitative analysis of online forum discussions on mental health problems in young Moroccan-Dutch migrants

Migrants and their offspring are at increased risk of developing mental disorders. Previous research has shown associations between adverse social factors (e.g., discrimination, lack of social support) and mental health problems in migrants, but it is unknown how these associations are understood by migrants themselves. In this study, we aimed to gain explorative insight into the way young Moroccan-Dutch people experience their social environment, and how they relate this social environment to the development of mental health problems. At www.marokko.nl, the largest online discussion platform for young Moroccan-Dutch people, contributors discuss a broad variety of subjects, including societal, cultural, religious, and mental health issues. Combining deductive and inductive approaches to qualitative data analysis, we analysed 22 forum discussions at marokko.nl about mental health problems, after which data saturation was reached. Contributors described feeling isolated and experiencing discrimination in their social environment. Contributor comments identified social challenges arising from Dutch society, Dutch culture (e.g., being too individualistic), Moroccan culture (e.g., strict parenting style), and living between these two cultures. These social challenges are perceived to be associated with mental health problems. Furthermore, we created a model describing the different types of explanations contributors used for mental health problems, being: religious (e.g., possession); medical (i.e., a bio-psycho-social cause); or a combination of both. This model can help clinicians in delivering culturally sensitive mental health care. Lastly, this study shows the taboo on mental health problems in the Moroccan-Dutch population and the opportunity to open up in the online environment.

Global prevalence of anxiety and PTSD in immigrants: a systematic review and meta-analysis

BACKGROUND

A systematic and meta-analysis of the prevalence of anxiety and posttraumatic stress disorder (PTSD) in immigrants was conducted.

METHODS

Based on the keywords, scientific databases were systematically searched to identify articles. The search included the three databases PubMed, Google Scholar and Research Gate until June 2020. The analysis was performed to assess the prevalence of anxiety and PTSD; subgroups were examined based on anxiety disorders.

RESULTS

The prevalence of agoraphobia, PTSD, generalized anxiety disorder (GAD), panic disorder, obsessive-compulsive disorder (OCD), social phobia and specific phobia were 4, 25, 9, 4, 3, 5 and 8%, respectively.

CONCLUSIONS

Considering the findings of the present study regarding the significant prevalence of anxiety and PTSD in the immigrant population, it is necessary to pay special attention to the mental health of this population.

Comparing Risk Factors for Non-affective Psychotic Disorders With Common Mental Disorders Among Migrant Groups: A 25-Year Retrospective Cohort Study of 2 Million Migrants

BACKGROUND AND HYPOTHESIS

Although migration is a well-established risk factor for psychotic disorders, less is known about factors that modify risk within migrant groups. We sought to assess whether socio-demographic, migration-related, and post-migration factors were associated with the risk of non-affective psychotic disorders (NAPD) among first-generation migrants, and to compare with estimates for common mental disorders (CMD) to explore specificity of the effect.

STUDY DESIGN

We constructed a retrospective cohort of first-generation migrants to Ontario, Canada using linked population-based health administrative data (1992-2011; n = 1 964 884). We identified NAPD and CMD using standardized algorithms. We used modified Poisson regression models to estimate incidence rate ratios (IRR) for each factor to assess its effect on the risk of each outcome.

STUDY RESULTS

Nearly 75% of cases of NAPD met the case definition for a CMD prior to the first diagnosis of psychosis. Our findings suggest that younger age at migration, male sex, being of African-origin, and not having proficiency in national languages had a specificity of effect for a higher risk of NAPD. Among migrants who were over 19 years of age at landing, higher pre-migratory education and being married/common-law at landing showed specificity of effect for a lower risk of NAPD. Migrant class, rurality of residence after landing, and post-migration neighborhood-level income showed similar effects across disorders.

CONCLUSIONS

Our findings help identify high-risk groups to target for intervention. Identifying factors that show specific effects for psychotic disorder, rather than mental disorders more broadly, are important for informing prevention and early intervention efforts.

Examining Variations in the Prevalence of Diagnosed Mood or Anxiety Disorders Among Migrant Groups in Ontario, 1995-2015: A Population-Based, Repeated Cross-Sectional Study

BACKGROUND

International evidence on the frequency of mood or anxiety disorders among migrant groups is highly variable, as it is dependent on the time since migration and the socio-political context of the host country. Our objective was to estimate trends in the prevalence of diagnosed mood or anxiety disorders among recent (<5 years in Canada) and settled (5-10 years in Canada) migrant groups, relative to the general population of Ontario, Canada.

METHODS

We used a repeated cross-sectional design consisting of four cross-sections spanning 5 years each, constructed using health administrative databases from 1995 to 2015. We included all Ontario residents between the ages of 16 and 64 years. We assessed differences in the prevalence of mood or anxiety disorders adjusting for age, sex, and neighbourhood-level income. We further evaluated the impact of migrant class and region of birth.

RESULTS

The prevalence of mood or anxiety disorders was lower among recent (weighted mean  =  4.10%; 95% confidence interval [CI], 3.59% to 4.60%) and settled (weighted mean  =  4.77%; 95% CI, 3.94% to 5.61%) migrant groups, relative to the general population (weighted mean  =  7.39%; 95% CI,  6.83% to 7.94%). Prevalence estimates varied greatly by region of birth and migrant class. We found variation in prevalence estimates over time, with refugee groups having the largest increases between 1995 and 2015.

CONCLUSIONS

Our findings highlight the complexity of mood and anxiety disorders among migrant groups, and that not all groups share the same risk profile. These results can be used to help inform health service allocation and the development of supportive programs for specific migrant groups.

Religiosity and prevalence of suicide, psychiatric disorders and psychotic symptoms in the French general population

We aimed to examine the association between religious beliefs and observance and the prevalence of psychiatric disorders, psychotic symptoms and history of suicide attempts in the French general population. The cross-sectional survey interviewed 38,694 subjects between 1999 and 2003, using the MINI. Current religious beliefs and observance were identified by means of two questions: "are you a believer?" and "are you religiously observant?". We studied the association between religiosity and psychiatric outcomes using a multivariable logistic regression model adjusted for sociodemographic characteristics, including migrant status. Religious beliefs were positively associated with psychotic symptoms and disorders [OR = 1.37, 95% CI (1.30-1.45) and OR = 1.38, 95% CI (1.20-1.58)], unipolar depressive disorder [OR = 1.15, 95% CI (1.06-1.23)] and generalized anxiety disorder [OR = 1.13, 95% CI (1.06-1.21)], but negatively associated with bipolar disorder [OR = 0.83, 95% CI (0.69-0.98)], alcohol use disorders [OR = 0.69, 95% CI (0.62-0.77)], substance use disorders [OR = 0.60, 95% CI (0.52-0.69)] and suicide attempts [OR = 0.90, 95% CI (0.82-0.99)]. Religious observance was positively associated with psychotic symptoms and disorders [OR = 1.38, 95% CI (1.20-1.58) and OR = 1.25, 95% CI (1.07-1.45)], but negatively associated with social anxiety disorder [OR = 0.87, 95% CI (0.76-0.99)], alcohol use disorders [OR = 0.60, 95% CI (0.51-0.70)], substance use disorders [OR = 0.48, 95% CI (0.38-0.60)] and suicide attempts [OR = 0.80, 95% CI (0.70-0.90)]. Among believers, religious observance was not associated with psychotic outcomes. Religiosity appears to be a complex and bidirectional determinant of psychiatric symptoms and disorders. In this respect, religiosity should be more thoroughly assessed in epidemiological psychiatric studies, as well as in clinical practice.

Major depressive disorders in young immigrants: A cohort study from primary healthcare settings in Sweden

AIMS

Previous studies on major depressive disorder (MDD) among immigrants have reported mixed results. Using data from primary healthcare settings in Sweden, we compared the incidence of MDD among first- and second-generation immigrants aged 15-39 years with natives.

METHODS

This was a retrospective nationwide open cohort study. Eligible individuals were born 1965-1983, aged 15-39 years at baseline, and resided in Sweden for at least one year during the study period 2000-2015. We identified MDD cases through the Primary Care Registry (PCR). The follow-up for each individual started when they met the inclusion criteria and were registered in the PCR and ended at MDD diagnosis, death, emigration, moving to a county without PCR coverage, or the end of the study period, whichever came first. Results: The final sample included 1,341,676 natives and 785,860 immigrants. The MDD incidence rate per 1000 person-years ranged from 6.1 (95% confidence intervals: 6.1, 6.2) to 16.6 (95% confidence intervals: 16.2, 17.0) in native males and second-generation female immigrants with a foreign-born father, respectively. After adjusting for income, the MDD risk did not differ substantially between first-generation male and female immigrants and natives. However, male and female second-generation immigrants had a 16-29% higher adjusted risk of MDD than natives.

CONCLUSIONS

This cohort study using primary healthcare data in Sweden, albeit incomplete, indicated that second-generation immigrants seem to be at a particularly high risk of MDDs. The underlying mechanisms need further investigation.

Depression and anxiety disorders among immigrants living in Finland: Comorbidity and mental health service use

BACKGROUND

The aims of this study were to (1) compare differences in psychiatric comorbidity of depression and anxiety disorders between immigrants and native Finns and to (2) compare differences in the intensity of psychiatric care received by different immigrant groups and Finnish-born controls with depression and/or anxiety disorders.

METHODS

The study uses registered-based data, which includes all immigrants living in Finland at the end of 2010 and matched Finnish-born controls. For this study, we selected individuals who had received a diagnosis of depression and/or an anxiety disorder during the follow-up (2011-2015) (immigrants n = 6542, Finnish-born controls n = 9281). We compared differences in comorbidity between the immigrants and the Finnish-born controls using chi-squared tests. Multinomial logistic regression was used to predict psychiatric treatment intensity by immigrant status, region of origin, and other background factors.

RESULTS

In both diagnosis groups, Finnish-born participants exhibited greater comorbidity of other psychiatric disorders. Immigrants more often received lower intensity treatment and less often higher intensity treatment. These differences were most striking among those from Eastern Europe, the Middle East, and Africa.

LIMITATIONS

We did not have the information on the perceived need for the services, which limits us from drawing further conclusions about the mechanisms behind the observed patterns.

CONCLUSIONS

Immigrants in Finland receive less intensive treatment for depression and anxiety disorders compared to the Finnish-born population. Since lower symptom levels can unlikely alone explain these differences, they could reflect a need for improvement in the psychiatric services for immigrants.

Secular Trends in Physical Activity Among Immigrants in the United States, 2009-2018

BACKGROUND

The objective of this study was to evaluate secular trends in domain-specific physical activity in the immigrant population in the US between 2009 and 2018.

METHOD

A secondary data analysis from the 2009-2018 National Health and Nutrition Examination Survey; a total of 7282 immigrants in the US were included in this analysis. All domain-specific physical activity was assessed by a self-reported questionnaire. Tests for linear trends were performed to examine the trends of each physical activity time using orthogonal polynomial coefficients. Physical activity trends were assessed by the whole group and the various subgroups.

RESULTS

Total physical activity showed an upward linear trend in female (Ptrend = .04) and young adult (Ptrend = .009) immigrants. Work-related physical activity showed an upward linear trend in young adult immigrants (Ptrend = .01). Recreational physical activity showed an upward linear trend in young adult (Ptrend = .03) and Mexican American (Ptrend < .001) immigrants and in immigrants living in the US for 15-29 years (Ptrend = .02). In contrast, we observed downward linear trends in transit-related physical activity for immigrants across male (Ptrend = .04), middle-aged adult (Ptrend = .01), and non-Hispanic black groups (Ptrend = .004) and in immigrants living in the US for 15-29 years (Ptrend = .03).

CONCLUSION

There were no significant linear trends in the 4 domains of physical activity in the overall US immigrant population; however, trends in domain-specific physical activity in the US immigrant population differed by gender, age, race/ethnicity, and length of residence. These findings may inform physical activity promotion strategies targeting US immigrant populations with diverse sociocultural backgrounds.

Characterizing individuals accessing mental health services in the UAE: a focus on youth living in Dubai

Background

Most mental health issues develop during adolescence, therefore identifying youth mental health needs and pathways to care is critical to improve prevention. To date, studies have typically focused on Western samples, while the impact of cultural diversity on perception of health and illness, and pathways to care, remain poorly understood. To address the shortage of studies conducted in the Arab world, and particularly in the United Arab Emirates (UAE), the present investigation aims to identify the characteristics of youth accessing mental health services in Dubai.

Methods

Data was collected retrospectively from patients’ records at Rashid Hospital Child Psychiatry Service. Information collected included demographics, life stressors, symptoms duration, main diagnosis, and presence/absence of psychotic features in patients’ symptomatology. The relationship between demographic and clinical variables was explored using Chi-square tests and negative binomial regression models.

Results

The sample included 99 treatment-seeking young patients (mean age 15.3; SD = 1.7); 47.5 % were Emirati (UAE national) and 52.5 % were non-Emirati patients. In our treatment-seeking youth sample Depressive disorders represented the most frequent diagnosis, followed by Bipolar and related disorders, Anxiety and stress related disorders, and Schizophrenia and psychotic disorders. Compared to Emirati patients, non-Emirati patients were more likely to report relationships with friends as a source of stress. Female help-seekers, compared to males, were more likely to report stressful relationships with family members, and to receive a diagnosis of Depressive disorders. The duration of symptoms before seeking help was significantly predicted by family stress, gender, self-harm behavior, a symptomatology with psychotic features, and a diagnosis of Anxiety disorders.

Conclusions

The present study contributes to characterizing youth accessing mental health services at Rashid Hospital’s Child Psychiatry service in Dubai. An overall prevalence of poor family functioning among help-seeking youth, and the importance of peer support for expatriate youth were highlighted. Gender differences in perceived stressors, diagnoses and help-seeking behavior suggest the need to promote help-seeking among young boys. While presentation with psychotic features seems to lead to quicker access to medical care, self-harm and anxiety appear to delay help-seeking. The potential implications of our results for promoting youth wellbeing in the region are discussed.

Attention deficit hyperactivity disorder in first- and second-generation immigrant children and adolescents: A nationwide cohort study in Sweden

BACKGROUND

Studies on the incidence of Attention Deficit Hyperactivity Disorder (ADHD) among immigrant children and adolescents is limited and results are mixed. The aim of this study was to compare the ADHD risk between first- and second-generation immigrants aged 4-16 years and their native peers in Sweden.

METHODS

This was an open nationwide retrospective cohort study. We included 1,902,526 native and 805,450 children and adolescents with an immigrant background, born 1987-2010, and aged 4-16 years at baseline. We identified participants using national population data and participants were observed until they received an ADHD diagnosis in the National Patient Register, turned 18 years, migrated, died, or until the end of the study, whichever came first. ADHD risks were adjusted for birth year and age and maternal income at baseline.

RESULTS

For both males and females, the ADHD risk was lower among most immigrant groups. However, the combination of a Swedish-born mother and foreign-born father was associated with an increased risk of ADHD. The ADHD risk varied substantially between immigrants from different regions of the world. For example, immigrants from other Scandinavian countries, North America, and Latin America and the Caribbean had higher rates of ADHD compared with natives.

CONCLUSIONS

Future research should examine the underlying factors behind the differences in ADHD risks between certain immigrant subgroups and natives, such as family structure, cultural and language barriers and potential differences in health care utilization among immigrant families.

Mental disorders among young adults of immigrant background: a nationwide register study in Norway

PURPOSE

Previous research indicates increased risk of various mental disorders in immigrant populations, particularly for schizophrenia and PTSD. However, findings are inconclusive due to variations in contextual factors, characteristics of immigrant groups and study design. Our study aims to investigate prevalence differences of receiving an ICD-10 psychiatric diagnosis between 2008 and 2016 among four first-generation immigrant groups and one second-generation immigrant group compared to ethnic Norwegians.

METHODS

Linked register data from the Norwegian Patient Registry and Statistics Norway were utilised. The sample (age 18-35) comprises 758,774 ethnic Norwegians, 61,124 immigrants originating from Poland, Somalia, Iran and Pakistan and 4630 s-generation Pakistani immigrants. Age- and gender-adjusted binary logistic regression models were applied.

RESULTS

The odds of schizophrenia were significantly elevated for all groups except for Poles. The highest odds were observed for second-generation Pakistani immigrants (adjusted OR 2.72, 95% CI 2.21-3.35). For PTSD, the odds were significantly increased for Somalis (aOR 1.31, 95% CI 1.11-1.54), second-generation Pakistani immigrants (aOR 1.37, 95% CI 1.11-1.70), and in particular for Iranians (aOR 3.99, 95% CI 3.51-4.54). While Iranians showed similar or higher odds of receiving the vast majority of psychiatric diagnoses, the remaining groups showed lower or similar odds compared to ethnic Norwegians.

CONCLUSION

Our findings suggest considerable prevalence differences in receiving a psychiatric diagnosis according to country of origin and generational status compared to ethnic Norwegian controls. The general pattern was lower prevalence of most ICD-10 mental disorders for the majority of immigrant groups compared to ethnic Norwegians, except for schizophrenia and PTSD.

Sadness and the continuum from well-being to depressive disorder: Findings from a representative US population sample

OBJECTIVE

Sadness is a common symptom in the general population. We tested the hypothesis that sadness is an intermediate state on a continuum from well-being to major depressive disorder (MDD).

METHODS

Using data from The National Epidemiologic Study of Alcohol and Related Conditions III (NESARC-III), a large and representative US population sample, we assessed the prevalence of sadness, its sociodemographic and clinical correlates, using three non-overlapping groups: (i) non-depressed sad participants, (ii) non-sad non-depressed participants and (iii) depressed participants. We estimated sensitivity and specificity of sadness.

RESULTS

Sadness was frequent in the general population 34.3%), and present in almost all participants with MDD (99.6%). Sad (N = 4593) and MDD participants (N = 4593) and 7889 respectively) shared common sociodemographic characteristics. Compared to controls, sad and MDD participants presented more psychiatric disorders, including anxiety, substance use, psychotic, eating and personality disorders. Sadness was an intermediate state, sad individuals reporting more psychiatric disorders than controls, but less than participants with MDD. Sadness demonstrated a very high sensitivity (99.6%), with a good specificity (83.8%) for MDD.

LIMITATIONS

The NESARC assessed sadness over lifetime, which may involve memorization bias.

CONCLUSION

Our study confirms the existence of a depressive continuum. Sadness is frequent in general population, and shares correlates with MDD. We have also shown a continuum where sadness is an intermediate state between well-being and psychiatric disorders. With high sensitivity and specificity, sadness appears as a clear MDD prodrome and at-risk state, and may be a symptom of a transdiagnostic distress process.

Schizophrenia: Developmental Variability Interacts with Risk Factors to Cause the Disorder: Nonspecific Variability-Enhancing Factors Combine with Specific Risk Factors to Cause Schizophrenia

A new etiological model is proposed for schizophrenia that combines variability-enhancing nonspecific factors acting during development with more specific risk factors. This model is better suited than the current etiological models of schizophrenia, based on the risk factors paradigm, for predicting and/or explaining several important findings about schizophrenia: high co-morbidity rates, low specificity of many risk factors, and persistence in the population of the associated genetic polymorphisms. Compared with similar models, e.g., de-canalization, common psychopathology factor, sexual-selection, or differential sensitivity to the environment, this proposal is more general and integrative. Recently developed research methods have proven the existence of genetic and environmental factors that enhance developmental variability. Applying such methods to newly collected or already available data can allow for testing the hypotheses upon which this model is built. If validated, this model may change the understanding of the etiology of schizophrenia, the research models, and preventionbrk paradigms.

Influence of migration on the thought process of individuals at ultra-high risk for psychosis

Objective:

To assess the influence of migration on the psychopathological presentation of individuals at ultra-high risk for psychosis (UHR) in São Paulo, Brazil.

Methods:

This study is part of the Subclinical Symptoms and Prodromal Psychosis (SSAPP) project, a cohort study in São Paulo, Brazil, designed to follow individuals at UHR. After screening with the Prodromal Questionnaire (PQ) and a clinical interview, the Global Assessment of Functioning (GAF) was administered, a neuropsychological assessment was performed, sociodemographic and migration data were obtained. We then analyzed UHR individuals who had migration data to see if migration had any effect on their cognition and psychopathology. Chi-square tests were used for categorical variables, and Student’s t test or analysis of variance (ANOVA) were used for nonparametric and parametric distributions, respectively.

Results:

The sample was composed of 42 at-risk subjects, of whom 5 had a migration history in the past two generations. Those with migration history showed significantly more formal thought disturbances (p = 0.012) and sleeping problems (p = 0.033) compared to those without.

Conclusions:

Our data reinforce migration as a risk factor for psychosis in developing countries as well, and highlights the importance of studying the specific effect of this factor in UHR psychopathology.

Purchases of psychotropic drugs among the migrant population in Finland: a nationwide register-based cohort study

Background

Migrant populations may have different mental health service needs when compared with native populations. One indicator of service use is the use of psychotropic medication. The aim of this study was to compare the purchases of psychotropic drugs among different migrant populations with the native population in Finland.

Methods

Foreign-born participants (n = 184 805) and their Finnish-born controls (n = 185 183) were identified from the Finnish Central Population Register. Information on their purchases of psychotropic drugs in 2011–15 was collected from the National Prescription Register. A washout period of 2009–10 was used to define incident purchases. Cox regression analysis was the statistical method used.

Results

At least one incident purchase of a psychotropic drug was identified for 11.1% of migrant women, 11.4% of Finnish-born women, 8.7% of migrant men and 9.8% of Finnish-born men. When controlled for age, sex, marital status, socioeconomic status and social assistance, migrants were less likely to purchase psychotropic drugs (adjusted hazard ratio 0.96, 95% confidence interval 0.93–0.98), but there was variation between different drug categories. Recent migrants and migrants from Asia and Sub-Saharan Africa were least likely to purchase drugs. Migrants from Nordic countries and other Western countries most closely resembled the Finnish-born controls.

Conclusions

Recent migrants in Finland appear to use fewer psychotropic drugs than native Finns. It is important to analyze the reasons for this pattern, as they may indicate delays in access to care or benefits. The heterogeneity of migrant populations must also be considered when developing services to better address their needs.

Climate anxiety: Psychological responses to climate change

Climate change will affect psychological wellbeing. Substantial research has documented harmful impacts on physical health, mental health, and social relations from exposure to extreme weather events that are associated with climate change. Recently, attention has turned to the possible effects of climate change on mental health through emotional responses such as increased anxiety. This paper discusses the nature of climate anxiety and some evidence for its existence, and speculates about ways to address it. Although climate anxiety appears to be a real phenomenon that deserves clinical attention, it is important to distinguish between adaptive and maladaptive levels of anxiety. A focus on individual mental health should not distract attention from the societal response that is necessary to address climate change.

Higher prevalence of depressed mood in immigrants' offspring reflects their social conditions in the host country: The HELIUS study

BACKGROUND

Immigrants from low- and middle-income countries who have settled in high-income countries show higher risks of depression in comparison with host populations. The risks are associated with adverse social conditions. Indecisive results have been reported on the depression risks of the offspring of immigrant populations.

OBJECTIVE

To assess the prevalence of depressed mood in immigrant offspring relative to the host population and to analyse whether that risk is explained by social conditions.

METHODS

Cross-sectional data from the Dutch HELIUS study were analysed, involving 19,904 men and women of Dutch, South-Asian Surinamese, African Surinamese, Turkish or Moroccan ethnic descent aged 18 to 70. Depressive symptomatology was assessed using the Patient Health Questionnaire-9 (PHQ-9). Indicators of social conditions were socioeconomic position (educational level, occupational level, employment status), perceived ethnic discrimination and sociocultural integration (ethnic identity, cultural orientation, social network). We used logistic regression to assess the risk of depressed mood (PHQ-9 sum score ≥10) in immigrants' offspring, as well as in first generation immigrants, relative to the risk in the host population. Social indicators were stepwise added to the model.

RESULTS

The prevalence of depressed mood was 13% to 20% among immigrant offspring, with the lowest level for those of African Surinamese descent; prevalence in the Dutch origin population was 7%. Relative risk of depressed mood, expressed as average marginal effects (AMEs), decreased substantially in all offspring groups after adjustment for socioeconomic indicators and discrimination. E.g. the AME of Turkish vs. Dutch decreased from 0.11 (0.08-0.13) to 0.05 (0.03-0.08). Patterns resembled those in first generation immigrants.

CONCLUSIONS

Results suggest that the observed higher prevalence of depressed mood in immigrants' offspring will decline to the level of the host population as the various populations grow closer in terms of socioeconomic position and as immigrant offspring cease to experience discrimination.

Associations in physical activity and sedentary behaviour among the immigrant and non-immigrant US population

BACKGROUND

Immigrants are at a higher risk of poor mental and physical health. Regular participation in physical activity (PA) and low levels of sedentary time are beneficial for both these aspects of health. The aim was to investigate levels and trends in domain-specific PA and sedentary behaviour in the US. immigrant compared with non-immigrant populations.

METHODS

From the 2007-2016 National Health and Nutrition Examination Survey (NHANES), a total of 25 142 adults (≥18 years) were included in this analysis. PA and sedentary behaviour time were assessed by a questionnaire.

RESULTS

Transit-related PA showed downward linear trends in young immigrant adults (p _trend=0.006) and middle-aged non-immigrant adults (p _trend=0.009). We found significant upward linear trends in sedentary behaviour for both immigrants and non-immigrants across all age groups. For sitting watching TV or videos ≥2 hours/day, there was a downward linear trend in young immigrant adults (p _trend=0.009). For computer use ≥1 hours/day, an upward linear trend in older non-immigrants was found (p _trend=0.024). Young immigrants spent 37.5 (95% CI -55.4 to -19.6) min less than non-immigrants on recreational PA per week. Also, older immigrants spent 23.5 (95% CI 1.5 to 45.6) and 22.5 (95% CI 5.9 to 39.0) min/week more than non-immigrants on recreational PA and transit-related PA, respectively. Last, young and middle-aged immigrants spent 37.6 (95% CI -68.2 to -7.0) and 37.6 (95% CI -99.7 to -9.7) min/day less than non-immigrants on sedentary behaviour, respectively.

CONCLUSION

Overall, levels of recreational PA were stable, yet the transit-related PA declined coupled with an increase in sedentary behaviour. US. immigrants exhibit higher levels of transit-PA, lower levels of leisure-time PA and lower levels of sedentary behaviour, in some age groups.

Immigrants' mental health service use compared to that of native Finns: a register study

PURPOSE

Many aspects related to migration might predispose immigrants to mental health problems. Yet immigrants have been shown to underuse mental health services. The aim of this study was to compare the intensity of psychiatric care, as an indicator of treatment adequacy, between natives and immigrants living in Finland.

METHODS

We used nationwide register data that included all the immigrants living in Finland at the end of 2010 (n = 185,605) and their matched controls. Only those who had used mental health services were included in the analyses (n = 14,285). We used multinomial logistic regression to predict the categorized treatment intensity by immigrant status, region and country of origin, length of residence, and other background variables.

RESULTS

Immigrants used mental health services less than Finnish controls and with lower intensity. The length of residence in Finland increased the probability of higher treatment intensity. Immigrants from Eastern Europe, sub-Saharan Africa, the Middle East, and Northern Africa were at the highest risk of receiving low-intensity treatment.

CONCLUSIONS

Some immigrant groups seem to persistently receive less psychiatric treatment than Finnish-born controls. Identification of these groups is important and future research is needed to determine the mechanisms behind these patterns.

Migration and psychosis: a meta-analysis of incidence studies

BACKGROUND

The aims of this meta-analysis are (i) to estimate the pooled relative risk (RR) of developing non-affective psychotic disorder (NAPD) and affective psychotic disorder (APD) among migrants and their children; (ii) to adjust these results for socioeconomic status (SES); (iii) to examine the sources of heterogeneity that underlie the risk of NAPD.

METHODS

We included population-based incidence studies that reported an age-adjusted RR with 95% confidence interval (CI) published 1 January 1977-12 October 2017 and used a random-effects model.

RESULTS

We retrieved studies performed in Europe (n = 43), Israel (n = 3), Canada (n = 2) and Australia (n = 1). The meta-analysis yielded a RR, adjusted for age and sex, of 2.13 (95% CI 1.99-2.27) for NAPD and 2.94 (95% CI 2.28-3.79) for APD. The RRs diminished, but persisted after adjustment for SES. With reference to NAPD: a personal or parental history of migration to Europe from countries outside Europe was associated with a higher RR (RR = 2.94, 95% CI 2.63-3.29) than migration within Europe (RR = 1.88, 95% 1.62-2.18). The corresponding RR was lower in Israel (RR = 1.22; 0.99-1.50) and Canada (RR = 1.21; 0.85-1.74). The RR was highest among individuals with a black skin colour (RR = 4.19, 95% CI 3.42-5.14). The evidence of a difference in risk between first and second generation was insufficient.

CONCLUSIONS

Positive selection may explain the low risk in Canada, while the change from exclusion to inclusion may do the same in Israel. Given the high risks among migrants from developing countries in Europe, social exclusion may have a pathogenic role.

First-generation migrants' use of psychotropic medication in Northern Ireland: a record linkage study

PURPOSE

There is a recent and growing migrant population in Northern Ireland. However, rigorous research is absent regarding access to mental health care by different migrant groups. In order to address this knowledge gap, this study aimed to identify the relative use of psychotropic medication between the largest first generation migrant groups in Northern Ireland and the majority population.

METHODS

Census (2011) data was linked to psychotropic prescriptions for the entire enumerated population of Northern Ireland using data linkage methodology through the Administrative Data Research Centre Northern Ireland (ADRC-NI).

RESULTS

Lower prescription dispensation for all psychotropic medication types, particularly antidepressants (OR = 0.35, CI 95% 0.33-0.36) and anxiolytics (OR = 0.42, CI 95% 0.40-0.44), was observed for all migrant groups with the exception of migrants from Germany.

CONCLUSIONS

It is likely that the results reflect poorer access to services and indicate a need to improve access and the match between resources, services and the health and social care needs of migrants. Further research is required to identify barriers to accessing primary care and mental health services.

Ethnic inequalities in the incidence of diagnosis of severe mental illness in England: a systematic review and new meta-analyses for non-affective and affective psychoses

PURPOSE

Although excess risks particularly for a diagnosis of schizophrenia have been identified for ethnic minority people in England and other contexts, we sought to identify and synthesise up-to-date evidence (2018) for affective in addition to non-affective psychoses by specific ethnic groups in England.

METHODS

Systematic review and meta-analysis of ethnic differences in diagnosed incidence of psychoses in England, searching nine databases for reviews (citing relevant studies up to 2009) and an updated search in three databases for studies between 2010 and 2018. Studies from both searches were combined in meta-analyses allowing coverage of more specific ethnic groups than previously.

RESULTS

We included 28 primary studies. Relative to the majority population, significantly higher risks of diagnosed schizophrenia were found in Black African (Relative risk, RR 5.72, 95% CI 3.87-8.46, n = 9); Black Caribbean (RR 5.20, 95% CI 4.33-6.24, n = 21); South Asian (RR 2.27, 95% CI 1.63-3.16, n = 14); White Other (RR 2.24, 95% CI 1.59-3.14, n = 9); and Mixed Ethnicity people (RR 2.24, 95% CI 1.32-3.80, n = 4). Significantly higher risks for diagnosed affective psychoses were also revealed: Black African (RR 4.07, 95% CI 2.27-7.28, n = 5); Black Caribbean (RR 2.91, 95% CI 1.78-4.74, n = 16); South Asian (RR 1.71, 95% CI 1.07-2.72, n = 8); White Other (RR 1.55, 95% CI 1.32-1.83, n = 5); Mixed Ethnicity (RR 6.16, 95% CI 3.99-9.52, n = 4).

CONCLUSIONS

The risk for a diagnosis of non-affective and affective psychoses is particularly elevated for Black ethnic groups, but is higher for all ethnic minority groups including those previously not assessed through meta-analyses (White Other, Mixed Ethnicity). This calls for further research on broader disadvantages affecting ethnic minority people.

Antidepressant medication use among working age first-generation migrants resident in Finland: an administrative data linkage study

BACKGROUND

A higher risk of common mental health disorders has been found for first-generation migrants in high income countries, but few studies have examined the use of mental health care. This study aimed to identify the level of antidepressant use amongst the largest first generation migrant groups resident in Finland.

METHODS

This cohort study used record-based data linkage methodology to examine the hazard of antidepressant use between migrant groups in Finland using Cox proportional hazard models. Data was derived using socio-demographic and prescription data from Statistics Finland and the Finnish Population Registry. The cohort included a random sample of 33% of the working age population in 2007 (N = 1,059,426, 49.8% women, 2.5% migrants) and dispensed antidepressant prescriptions from 2008 to 2014.

RESULTS

After adjustment for socio-demographic characteristics, results show higher antidepressant use for female migrants from North Africa and the Middle East compared to the Finland-born majority, a similar level of use for migrants from Western countries, and lower use for migrants from other non-Western countries.

CONCLUSIONS

The gender and country of origin dependent use of antidepressant medication is discussed in terms of socio-political and cultural between-group differences. Recommendations are made to address inequalities in accessing services, particularly for migrants from non-Western countries.

Gaps in Understanding of the Epidemiology of Mood and Anxiety Disorders among Migrant Groups in Canada: A Systematic Review

OBJECTIVE

Estimates of mood and anxiety disorders are highly variable among migrant groups, as they are influenced by the socio-political context. Our objective was to conduct a systematic review and meta-analysis to synthesize available Canadian evidence on the prevalence and incidence of mood and anxiety disorders among migrant groups.

METHODS

Studies were identified from MEDLINE, EMBASE, and PsycINFO. They were included if they used population-based samples, presented data on the incidence or prevalence of diagnosed or self-reported mood or anxiety disorders for first-generation migrant groups in Canada, and used a Canadian-born or long-term resident reference group.

RESULTS

Nineteen studies met our inclusion criteria. Prevalence ratios ranged from 0.48 to 0.87, and nearly all estimates were obtained from population health surveys. Prevalence estimates among migrant groups were lower than the reference group, with the 90th percentile of estimates ranging from 1.5% to 8.2%. Risk factors for mood and anxiety disorders among migrants included being female, younger, unemployed, having lower income, and living in neighborhoods with a lower proportion of migrants.

CONCLUSIONS

There remain many gaps in our current understanding of mood and anxiety disorders among migrant groups in Canada. Although evidence suggests the prevalence of mood and anxiety disorders are consistently lower among migrant groups, a lack of incidence estimates limits the strength of this conclusion. Future research should focus on comparisons of self-reported and diagnosed estimates, the use of a range of different primary or secondary data sources, and consideration of important risk factors.

PROSPERO CITATION

Jordan Edwards, Malini Hu, Amardeep Thind, Saverio Stranges, Maria Chiu, Kelly Anderson. The burden of mood and anxiety disorders among immigrant and refugee populations in Canada: a systematic review. PROSPERO 2018 CRD42018087869 Available from: http://www.crd.york.ac.uk/PROSPERO/display_record.php?ID=CRD42018087869 .

Parental immigration and offspring post-traumatic stress disorder: A nationwide population-based register study

OBJECTIVES

The aim of this study was to investigate the association between parental immigration status and a diagnosis of post-traumatic stress disorder (PTSD) in their offspring.

METHODS

This nested matched case-control study was based on a Finnish national birth cohort for 1987-2010 and cases were diagnosed with PTSD by 2012 from the Care Register for Health Care. We identified 3639 cases and 14,434 controls individually matched for gender, place and date of birth (±30 days). Conditional logistic regression analyses were conducted to examine the association between parental immigration status, parents' region of birth and time since paternal immigration, and PTSD after controlling for confounding factors.

RESULTS

The likelihood of being diagnosed with PTSD was significantly increased among children with an immigrant father (OR 1.8, 95% CI 1.3 - 2.4) than those with two Finnish parents and one immigrant mother. There was no significant association between having an immigrant mother or two immigrant parents and receiving a diagnosis of PTSD. The likelihood of being diagnosed with PTSD was increased if the children's fathers had migrated less than five years before their birth (OR 1.4, 95% CI 1.03 - 1.9) and if their immigrant fathers had been born in North Africa or the Middle East (OR 2.1, 95% CI 1.4 - 3.3).

LIMITATIONS

The sample included a heterogeneous migrant group without information on the reason for migration. The cases were identified from hospital diagnosis that may have only included severe cases.

CONCLUSION

The increased likelihood of a diagnosis of PTSD underlines the need for psychosocial services among second-generation immigrants.

The UCL-Lancet Commission on Migration and Health: the health of a world on the move

With one billion people on the move or having moved in 2018, migration is a global reality, which has also become a political lightning rod. Although estimates indicate that the majority of global migration occurs within low-income and middle-income countries (LMICs), the most prominent dialogue focuses almost exclusively on migration from LMICs to high-income countries (HICs). Nowadays, populist discourse demonises the very same individuals who uphold economies, bolster social services, and contribute to health services in both origin and destination locations. Those in positions of political and economic power continue to restrict or publicly condemn migration to promote their own interests. Meanwhile nationalist movements assert so-called cultural sovereignty by delineating an us versus them rhetoric, creating a moral emergency.

In response to these issues, the UCL-Lancet Commission on Migration and Health was convened to articulate evidence-based approaches to inform public discourse and policy. The Commission undertook analyses and consulted widely, with diverse international evidence and expertise spanning sociology, politics, public health science, law, humanitarianism, and anthropology. The result of this work is a report that aims to be a call to action for civil society, health leaders, academics, and policy makers to maximise the benefits and reduce the costs of migration on health locally and globally. The outputs of our work relate to five overarching goals that we thread throughout the report.

First, we provide the latest evidence on migration and health outcomes. This evidence challenges common myths and highlights the diversity, dynamics, and benefits of modern migration and how it relates to population and individual health. Migrants generally contribute more to the wealth of host societies than they cost. Our Article shows that international migrants in HICs have, on average, lower mortality than the host country population. However, increased morbidity was found for some conditions and among certain subgroups of migrants, (eg, increased rates of mental illness in victims of trafficking and people fleeing conflict) and in populations left behind in the location of origin. Currently, in 2018, the full range of migrants’ health needs are difficult to assess because of poor quality data. We know very little, for example, about the health of undocumented migrants, people with disabilities, or lesbian, gay, bisexual, transsexual, or intersex (LGBTI) individuals who migrate or who are unable to move.

Second, we examine multisector determinants of health and consider the implication of the current sector-siloed approaches. The health of people who migrate depends greatly on structural and political factors that determine the impetus for migration, the conditions of their journey, and their destination. Discrimination, gender inequalities, and exclusion from health and social services repeatedly emerge as negative health influences for migrants that require cross-sector responses.

Third, we critically review key challenges to healthy migration. Population mobility provides economic, social, and cultural dividends for those who migrate and their host communities. Furthermore, the right to the highest attainable standard of health, regardless of location or migration status, is enshrined in numerous human rights instruments. However, national sovereignty concerns overshadow these benefits and legal norms. Attention to migration focuses largely on security concerns. When there is conjoining of the words health and migration, it is either focused on small subsets of society and policy, or negatively construed. International agreements, such as the UN Global Compact for Migration and the UN Global Compact on Refugees, represent an opportunity to ensure that international solidarity, unity of intent, and our shared humanity triumphs over nationalist and exclusionary policies, leading to concrete actions to protect the health of migrants.

Fourth, we examine equity in access to health and health services and offer evidence-based solutions to improve the health of migrants. Migrants should be explicitly included in universal health coverage commitments. Ultimately, the cost of failing to be health-inclusive could be more expensive to national economies, health security, and global health than the modest investments required.

Finally, we look ahead to outline how our evidence can contribute to synergistic and equitable health, social, and economic policies, and feasible strategies to inform and inspire action by migrants, policy makers, and civil society. We conclude that migration should be treated as a central feature of 21st century health and development. Commitments to the health of migrating populations should be considered across all Sustainable Development Goals (SDGs) and in the implementation of the Global Compact for Migration and Global Compact on Refugees. This Commission offers recommendations that view population mobility as an asset to global health by showing the meaning and reality of good health for all. We present four key messages that provide a focus for future action.

Amygdala reactivity in ethnic minorities and its relationship to the social environment: an fMRI study

BACKGROUND

Ethnic minority individuals have an increased risk of developing a psychotic disorder, particularly if they live in areas of ethnic segregation, or low own group ethnic density. The neurobiological mechanisms underlying this ethnic minority associated risk are unknown. We used functional MRI to investigate neural responses to faces of different ethnicity, in individuals of black ethnicity, and a control group of white British ethnicity individuals.

METHODS

In total 20 individuals of black ethnicity, and 22 individuals of white British ethnicity underwent a 3T MRI scan while viewing faces of black and white ethnicity. Own group ethnic density was calculated from the 2011 census. Neighbourhood segregation was quantified using the Index of Dissimilarity method.

RESULTS

At the within-group level, both groups showed greater right amygdala activation to outgroup faces. Between groups, the black ethnicity group showed greater right amygdala activation to white faces, compared to the white ethnicity group. Within the black ethnicity group, individuals living in areas of lower own group ethnic density showed greater right amygdala reactivity to white faces (r = -0.61, p = 0.01).

CONCLUSIONS

This is the first time an increased amygdala response to white faces has been demonstrated in individuals of black ethnicity. In the black ethnicity group, correlations were observed between amygdala response and neighbourhood variables associated with increased psychosis risk. These results may have relevance for our understanding of the increased rates of paranoia and psychotic disorders in ethnic minority individuals.

Immigrants and mental disorders in the united states: New evidence on the healthy migrant hypothesis

OBJECTIVES

Despite experiencing migration-related stress and social adversity, immigrants are less likely to experience an array of adverse behavioral and health outcomes. Guided by the healthy migrant hypothesis, which proposes that this paradox can be explained in part by selection effects, we examine the prevalence and comorbidity of mental disorders among immigrants to the United States (US).

METHODS

Findings are based on the National Epidemiologic Survey on Alcohol and Related Conditions (2012-2013), a nationally representative survey of 36,309 adults in the US.

RESULTS

Immigrants were significantly less likely than US-born individuals to meet criteria for a lifetime disorder (AOR = 0.63, 95% CI = 0.57-0.71) or to report parental history of psychiatric problems. Compared to US-born individuals, the prevalence of mental disorders was not significantly different among individuals who immigrated as children; however, differences were observed for immigrants who arrived as adolescents (ages 12-17) or as adults (age 18+).

DISCUSSION

Consistent with the healthy migrant hypothesis, immigrants are less likely to come from families with psychiatric problems, and those who migrate after childhood-when selection effects are most likely to be observed-have the lowest levels of psychiatric morbidity.

Increased prevalence of anxiety disorders in third-generation migrants in comparison to natives and to first-generation migrants

INTRODUCTION

We sought to examine the prevalence of anxiety disorders associated with migration in the first-, second- and third-generation.

METHODS

The French Mental Health in the General Population cross-sectional survey interviewed 38,694 individuals using the MINI. The prevalence of lifetime anxiety disorders, and comorbidities was compared between migrants and non-migrants and by generation. All analyses were adjusted for age, sex, and income and education levels.

RESULTS

In comparison to natives, pooled anxiety disorders were more common among migrants (25.3% vs. 20.7%, OR = 1.24) and among the three studied generations of migrants. Moreover, the prevalence rate of the pooled anxiety disorders was significantly higher in third-generation migrants, in comparison to first-generation (26.7% vs. 22.6%, OR = 1.14). Prevalence rates were higher in migrants for panic disorder (6.6% vs. 5.3%, OR = 1.20), general anxiety disorder (15.0% vs. 12.0%, OR = 1.24), posttraumatic stress disorder (1.0% vs. 0.6%, OR = 1.51), but not for social anxiety disorder. In comparison to natives, migrants with anxiety disorders had higher prevalence rates of suicide attempts (14.0% vs. 12.8% for natives), psychotic disorders (8.3% vs. 5.7%), unipolar depressive disorder (29.5% vs. 25.4%), bipolar disorder (5.0% vs. 4.0%), and addictive disorders (9.6% vs. 6.2% for alcohol use disorder, 8.2% vs. 4.1% for substance use disorders).

CONCLUSION

Migration was associated with a higher prevalence of all anxiety disorders, in the first, second and third generation, and associated with more psychiatric comorbidities. Moreover, the prevalence increased across generations, and was significantly higher among third-generation migrants, in comparison to first-generation.

The impact of ethnic density on dispensing of antipsychotic and antidepressant medication among immigrants in the Netherlands

PURPOSE

A higher own-group ethnic density in the area of residence is often associated with a lower risk for psychotic disorder. For common mental disorders the evidence is less convincing. This study explores whether these findings are mirrored in data on dispensing of antipsychotics and antidepressants.

METHODS

Health insurance data on dispensed medication among all adults living in the four largest Dutch cities were linked to demographic data from Statistics Netherlands. Dispensing of antipsychotics and antidepressants in 2013 was analyzed in relation to the proportion of the own ethnic group in the neighborhood.

RESULTS

Higher own-group ethnic density was associated with lower dispensing of antipsychotics among the Moroccan-Dutch (N = 115,455), after adjusting for age, gender, and SES of the neighborhood (OR_adj for the highest vs. the lowest density quintile = 0.72 [0.66-0.79]). However, this association vanished after adjustment for household composition (OR_adj = 0.93 [0.85-1.03]). Similar results were found for the Turkish-Dutch (N = 105,460) (OR_adj = 0.86 [0.76-0.96] and 1.05 [0.94-1.18]). For those of Surinamese (N = 147,123) and Antillean origin (N = 41,430), in contrast, the association between ethnic density and lower risk remained after each adjustment (P < 0.001). For antidepressants, a negative association with own-group ethnic density was consistently found for those of Antillean origin (OR_adj = 0.62 [0.52-0.74]) only.

CONCLUSION

These data on dispensing of psychomedication confirm the ethnic density hypothesis for psychosis alongside earlier equivocal findings for other mental disorders. The negative association between own-group ethnic density and dispensing of antipsychotics among the Moroccan- and Turkish-Dutch may be explained, at least in part, by a favourable household composition (i.e., living in a family) in high-density neighborhoods.

Migrant and ethnic minority status as risk indicators for schizophrenia: new findings

PURPOSE OF REVIEW

Arguably, the strongest evidence of an environmental contribution to the cause of psychosis is the increased risk for certain groups of migrants and ethnic minorities. This article summarizes findings published since 2016.

RECENT FINDINGS

Two studies suggested that migration or minority status are proxies for exposure to an inferior social status. A study from Bologna, Italy, showed that the psychosis risk for internal migrants from Southern Italy was as much increased as that for international migrants. A report from New Zealand reported a higher risk for Maoris than for the remainder of the population.Furthermore, a Danish investigation showed that own-group ethnic density of the neighbourhood at age 15 strongly modified the psychosis risk at adult age. This rules out differential mobility during the prodromal phase as an explanation for the ethnic density effect. Preliminary evidence suggests that the psychotogenic effect of migration may be mediated by elevated dopamine in the striatum.

SUMMARY

An increasing body of evidence suggests that the higher psychosis risk for certain migrant or ethnic minority groups is due to an inferior social status. Neuroimaging of the dopamine system appears to be a promising avenue for research into pathogenesis.

The Impact of Cultural Dissonance and Acculturation Orientations on Immigrant Students’ academic performance

Prior research has documented meaningful differences between school performance of immigrant and native students. Multicultural education has been associated with academic failure of foreign students. The aim of this study was to examine the impact of a set of psychosocial variables on the perceived academic achievement of first generation immigrant adolescents from public secondary schools in Northern Spain. Results showed that 46% of the variability in foreign students’ perceived academic performance was explained by home-school cultural dissonance. We also explored the impact of acculturation orientation to separation, perception of discrimination from teachers, school adjustment and psychological well-being in academic performance. Any multicultural education context should take into account psychosocial adjustment, given its influence on academic performance of all students.

Incidence and prevalence of mental disorders among immigrants and native Finns: a register-based study

PURPOSE

Migrants appear to have a higher risk of mental disorders, but findings vary across country settings and migrant groups. We aimed to assess incidence and prevalence of mental disorders among immigrants and Finnish-born controls in a register-based cohort study.

METHODS

A register-based cohort study of 184.806 immigrants and 185.184 Finnish-born controls (1.412.117 person-years) was conducted. Information on mental disorders according to ICD-10 was retrieved from the Hospital Discharge Register, which covers all public health care use.

RESULTS

The incidence of any mental disorder was lower among male (adjusted HR 0.82, 95% CI 0.77-0.87) and female (aHR 0.76, 95% CI 0.72-0.81) immigrants, being lowest among Asian and highest among North African and Middle Eastern immigrants. The incidence of bipolar, depressive and alcohol use disorders was lower among immigrants. Incidence of psychotic disorders was lower among female and not higher among male immigrants, compared with native Finns. Incidence of PTSD was higher among male immigrants (aHR 4.88, 95% CI 3.38-7.05).

CONCLUSIONS

The risk of mental disorders varies significantly across migrant groups and disorders and is generally lower among immigrants than native Finns.

Risk of eating disorders in immigrant populations

OBJECTIVE

The risk of certain psychiatric disorders is elevated among immigrants. To date, no population studies on immigrant health have addressed eating disorders. We examined whether risk of eating disorders in first- and second-generation immigrants differs from native-born Danes and Swedes.

METHOD

All individuals born 1984-2002 (Danish cohort) and 1989-1999 (Swedish cohort) and residing in the respective country on their 10th birthday were included. They were followed up for the development of eating disorders based on out-patient and in-patient data.

RESULTS

The risks of all eating disorder types were lower among first-generation immigrants compared to the native populations: Incidence-rate ratio (95% confidence interval) was 0.39 (0.29, 0.51) for anorexia nervosa, 0.60 (0.42, 0.83) for bulimia nervosa, and 0.62 (0.47, 0.79) for other eating disorders in Denmark and 0.27 (0.21, 0.34) for anorexia nervosa, 0.30 (0.18, 0.51) for bulimia nervosa, and 0.39 (0.32, 0.47) for other eating disorders in Sweden. Likewise, second-generation immigrants by both parents were at lower risk, whereas those with only one foreign-born parent were not.

CONCLUSION

The decreased risk of eating disorders among immigrants is opposite to what has been observed for other psychiatric disorders, particularly schizophrenia. Possible explanations include buffering sociocultural factors and underdetection in health care.