A prospective study of severe mental disorder in Afro-Caribbean patients

The perceived effects of migration on the mental health of Afro-Caribbean immigrants: A narrative synthesis of qualitative studies

WHAT IS KNOWN ON THE SUBJECT?: Economic and educational opportunities are usually the principal driving forces for migration. There is a large body of quantitative research studies, mainly from the U.K., supporting the high prevalence of psychiatric disorders, mainly psychotic disorders, in Afro-Caribbean immigrants which increases across generations. The process of migration and acculturation can present significant risk factors for psychiatric disorders in immigrants. Research involving members of the Black community is generally conducted with the perception that Blacks are a homogenous group, ignoring the cultural and ethnic differences among the subgroups. WHAT THE PAPER ADDS TO EXISTING KNOWLEDGE?: It provides a broadened understanding of the experiences, thoughts and feelings of Afro-Caribbean immigrants, and the factors within the processes of migration and acculturation that negatively impacts their mental health. It provides context to the volume of quantitative studies indicating a high prevalence of psychiatric disorders, particularly psychotic disorders, in Afro-Caribbean immigrants and their offspring. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: Nurses conducting mental health evaluations and assessments for members of the Black community should be culturally competent. Cultural competence entails an understanding of cultural beliefs, race, ethnicity and values. Additionally, knowledge of the effects of migration and acculturation as mental health risks is also important to improve mental health outcomes. Cultural competence will help reduce health disparities by increasing trust in the health care system and providers, not only for Afro-Caribbean immigrants, but all immigrant groups.

ABSTRACT

INTRODUCTION: There is evidence to support migration as a significant risk factor for psychiatric disorders in immigrants. Unfortunately, as an immigrant group, little is known about the mental health of Afro-Caribbean immigrants and the factors that threaten their mental health.

AIM

To explore the perceived effects of migration on the mental health of Afro-Caribbean immigrants.

METHODS

A qualitative narrative synthesis was employed to interpretively integrate 13 primary qualitative research findings. Eleven of the primary studies were conducted in the U.K., one in the U.S. and one in Canada.

RESULTS

The themes gleaned: (1) experiences of racism, (2) generational conflicts, (3) feelings of powerlessness, (4) limited socioeconomic resources, (5) unfulfilled expectations, (6) fragmented family and community and (7) ignoring cultural/ethnic identity.

DISCUSSION

The findings broadened the understanding and experiences of Afro-Caribbean immigrants and their mental health vulnerabilities as they navigate through migration and acculturation.

IMPLICATIONS FOR PRACTICE

Addressing the mental health of Afro-Caribbeans will require health care providers to: (1) be cognizant of their immigrant status; (2) understand how migration and acculturation influence the mental health of immigrants; (3) be aware of the ethnocultural differences among Black subgroups.

A conceptual framework for culturally appropriate advocacy with racialised groups

Independent mental health advocacy was introduced in England to protect and promote the rights of people detained under mental health legislation. However, shortcomings in access and delivery to racialised people, raising concerns about equity, were identified by a review of the Mental Health Act. The development of culturally appropriate advocacy was recommended. While the term culturally appropriate may be taken for granted it is poorly defined and limited efforts have conceptualized it in relation to advocacy. Ideally, advocacy operates as a liberatory practice to challenge epistemic injustice, which people experiencing poor mental health are at acute risk of. This is amplified for people from racialised communities through systemic racism. This paper argues that advocacy and culturally appropriate practices are especially relevant to racialised people. It clarifies the importance of culture, race and racism to the role of advocacy, and understanding advocacy through the conceptual lens of epistemic injustice. A central aim of the paper is to draw on and appraise cultural competency models to develop a conceptual framing of cultural appropriate advocacy to promote epistemic justice.

Development and Validation of Predictive Model for a Diagnosis of First Episode Psychosis Using the Multinational EU-GEI Case-control Study and Modern Statistical Learning Methods

Background and Hypothesis

It is argued that availability of diagnostic models will facilitate a more rapid identification of individuals who are at a higher risk of first episode psychosis (FEP). Therefore, we developed, evaluated, and validated a diagnostic risk estimation model to classify individual with FEP and controls across six countries.

Study Design

We used data from a large multi-center study encompassing 2627 phenotypically well-defined participants (aged 18-64 years) recruited from six countries spanning 17 research sites, as part of the European Network of National Schizophrenia Networks Studying Gene-Environment Interactions study. To build the diagnostic model and identify which of important factors for estimating an individual risk of FEP, we applied a binary logistic model with regularization by the least absolute shrinkage and selection operator. The model was validated employing the internal-external cross-validation approach. The model performance was assessed with the area under the receiver operating characteristic curve (AUROC), calibration, sensitivity, and specificity.

Study Results

Having included preselected 22 predictor variables, the model was able to discriminate adults with FEP and controls with high accuracy across all six countries (rangesAUROC = 0.84-0.86). Specificity (range = 73.9-78.0%) and sensitivity (range = 75.6-79.3%) were equally good, cumulatively indicating an excellent model accuracy; though, calibration slope for the diagnostic model showed a presence of some overfitting when applied specifically to participants from France, the UK, and The Netherlands.

Conclusions

The new FEP model achieved a good discrimination and good calibration across six countries with different ethnic contributions supporting its robustness and good generalizability.

Social Defeat, Psychotic Symptoms, and Crime in Young Caribbean Immigrants to Rotterdam

Background: The negative experience of being excluded from the majority group (social defeat) may be associated with psychosis in immigrants. The social defeat hypothesis is supported by the high frequency of perceived discrimination and acculturation problems in psychotic immigrants. In addition, social defeat may lead to crime through social problems such as unemployment, school dropout, a broken family structure, or psychotic symptoms. Methods: We assessed the association between social defeat and acculturation on the one hand and broadly defined psychotic symptoms and crime on the other in Caribbean immigrants to Rotterdam who are aged 18-24 years. The municipality of Rotterdam provided data about Caribbean immigrants to Rotterdam. Acculturation, social defeat (perceived discrimination, sense of control, and evaluation of self and others), psychotic symptoms, and crime were assessed using online questionnaires. Results: Social defeat was associated with psychotic symptoms in women (β = 0.614, p < 0.001). This relation applied particularly to the negative self-perception domain of social defeat. Acculturation was associated with neither social defeat nor psychotic symptoms or crime and did not mediate the association between social defeat and psychosis. Conclusion: The social defeat hypothesis of psychosis may be gender-specific valid but does not extend to crime.

Psychosis, migration and social environment: an age-and-gender controlled study

Purpose

Adverse social experiences are frequently invoked to explain the higher rate of psychosis among migrant groups. The aim of the present study was to establish the socio-environmental factors distinguishing migrant psychotic patients from autochthonous patients.

Subjects and method

We conducted a cross-sectional survey involving 341 migrant psychotic patients matched for age and gender with 341 autochthonous psychotic patients.

Results

Migrant patients lived more often with their parental family, were less often enrolled with a referral psychiatrist, presented a lower rate of employment, a lower percentage of alcohol misuse and of suicide attempts.

Discussion

Our findings add to the growing body of results showing that more attention needs to be focused on socio-environmental variables in psychosis research. However, several limitations have to be taken into account, particularly with regard to selection biases and age of onset of the psychotic illness.

Conclusion

Our results are compatible with the hypothesis that unemployment is a contributing factor in the risk for psychosis among migrant groups. Migrants’ families are an important keystone in the mental health care process of their sick relatives. Our service models need to be adapted with the aim to make the treatment easier for migrant patients.

Where next for understanding race/ethnic inequalities in severe mental illness? Structural, interpersonal and institutional racism

In this article we use the example of race/ethnic inequalities in severe mental illness to demonstrate the utility of a novel integrative approach to theorising the role of racism in generating inequality. Ethnic minority people in the UK are at much greater risk than White British people of being diagnosed with a severe - psychosis related - mental illness, and this is particularly the case for those with Black Caribbean or Black African origins. There is entrenched dispute about how we might understand the drivers of this inequality. To address this dispute we build on, and to a certain extent refine, established approaches to theorising structural and institutional racism, and integrate this within a theoretical framework that also incorporates racist/discriminatory interactions (interpersonal racism). We argue that this provides a conceptually robust and thorough analysis of the role of inter-related dimensions of racism in shaping risks of severe mental illness, access to care, and policy and practice responses. This analysis carries implications for a broader, but integrated, understanding of the fundamental drives of race/ethnic inequalities in health and for an anti-racism public health agenda.

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.

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.

Immigrants' outcome after a first-episode psychosis

AIM

Immigration is a risk factor for psychosis emergence, and previous studies show that immigrants are less likely to engage in treatment for psychosis. However, the literature on outcome is scant and heterogeneous. This study was designed to compare first-generation (FGI) and second-generation immigrants (SGI) to non-immigrants' symptomatic and functional outcomes 2 years after a first-episode psychosis (FEP).

METHODS

A 2-year prospective longitudinal study of 223 FEP patients between 18 and 30 years took place in two early intervention services (EIS) in Montreal, Canada.

RESULTS

Forty-two per cent of the sample were immigrants (FGI (n = 56), SGI (n = 38)). Compared with non-immigrants, immigrants had similar symptomatic and functioning profiles at baseline, 1 and 2 years, except that fewer SGI had a history of homelessness and more were living with their families. FGI were less likely to have a substance use disorder but more likely to pursue their studies and to present depressive symptoms.

CONCLUSIONS

Even if immigrants are known to be at greater risk of developing psychosis, probably secondary to stress related to immigration, their symptomatic and functional outcomes, once engaged in EIS treatment, are similar to or sometimes better than non-immigrants' outcomes. Because immigrants tend to be less engaged in their follow-up, understanding why they disengage from treatment is crucial to develop better therapeutic approaches to better engage them as EIS treatment can improve their outcomes effectively.

Schizophrenia in Afro-Caribbean Immigrants

Hospital admission rates for schizophrenia are higher in Afro-Caribbean immigrants to Britain than in the white British-born population. However, the reported differences in incidence and prevalence could be due to confounding variables: the diagnosis of schizophrenia might not carry the same prognostic implications in the two groups; and the differences in formal admission rates might not persist when demographic and diagnostic differences are allowed for. The case-notes of 50 Afro-Caribbean immigrants and 41 British-born white patients with a hospital diagnosis of schizophrenia were examined retrospectively, the average period covered being 12 years. There were no differences in the number of readmissions, but in the Afro-Caribbean group readmissions were shorter. Involuntary admissions were twice as common in Afro-Caribbeans and this excess was not explained by differences in age, sex, or type of illness. The reported excess of schizophrenia in Afro-Caribbean immigrants to Britain is real, but the illness seems to run a milder course than in the white British-born population.

Are psychiatrists sexist? a study of bias in the assessment of psychiatric emergencies

In order to investigate bias in history taking among psychiatric trainees, a retrospective study of case-notes was undertaken in an emergency psychiatric clinic in a teaching district. Two hundred and twenty-seven consecutive new patient assessments were assessed for quality of alcohol, substance use and forensic histories. Trainees were more likely to take alcohol, substance use and forensic histories from men, and more likely to take substance use histories from younger patients. It is concluded that trainees make sexist and ageist assumptions when they assess patients. There is a need for the education of doctors in this area.

Environmental influences in schizophrenia: the known and the unknown

Despite much research, environmental influences that can be said to cause a schizophrenic illness remain elusive. When the effects of an (often prolonged) prodromal syndrome are taken into account, the first episode appears to come from nowhere. However, over the past couple of decades a number of factors have emerged that can be argued to influence, and not merely reflect, the illness onset. The possible effects of season and geography of birth, urbanisation, immigration, substance misuse, prenatal influenza, famine and other stresses, and obstetric complications are summarised. These varied findings, often of small effect and borderline significance, present a challenge to clinicians attempting to make sense of their patients' life experiences. Any hard conclusions still depend largely on how one formulates the illness.

What is an Afro-Caribbean? Implications for psychiatric research

The term Afro-Caribbean is used to describe black people of Caribbean origin in Britain. Migrants from the Caribbean, their children and their children's children are all covered by this term. The group as a whole is reported to have a higher incidence rate of schizophrenia than white groups, (King et al 1994), and British-born children of Caribbean parents have an even higher rate (Harrison et al, 1988). These reports have led to the hypothesis that Afro-Caribbeans may have a special vulnerability to schizophrenia. While limitations to these studies have been identified, (Wessly et al 1991) none has sought to question the use of the term Afro-Caribbean as a valid and reliable ethnic grouping. If we are to be able to produce good hypotheses for the aetiology of the reported increases in incidence, or to produce research which is useful to Black and ethnic minority groups, we need a clear understanding of the people under study.

What attitudes do psychiatrists hold towards people with mental illness?

Aims and Method

To investigate the attitudes that psychiatrists hold towards people with mental illness. Each member of the Royal College of Psychiatrists in the UK was sent a questionnaire based on previous research in this area, supplemented with relevant questions on management.

Results

2813 of 6524 questionnaires were returned (43%). Psychiatrists' attitudes compared favourably with those of the general population. Among other findings, they believed that the risk of dangerousness was overemphasised, that misdiagnosis of schizophrenia in Black people is common, and that polypharmacy and the use of antipsychotic medication above British National Formulary levels occurs too often.

Clinical Implications

Psychiatrists' attitudes are substantially more favourable towards people with mental illness than those of the general population with individual, but important, exceptions. Some aspects of psychiatric management, especially of antipsychotic medication, may undermine this, however. Comparison with other groups, e.g. general practitioners, nurses and social workers, would be useful in planning how to reduce the stigmatisation of people with mental illness.

Blacks and psychiatry: a framework for understanding access to psychiatric services

In efforts to improve the acceptability of psychiatric services and their ease of access, the issue of how people get psychiatric help when they need it is one of growing concern. There is now increasing evidence that psychiatric services operate differently for black and white people in Britain, and much concern that services may differentially disadvantage blacks (Francis et al, 1989).

Health professionals' views of services for schizophrenia – fragmentation and inequality

There has been much debate about effective treatments, service configurations and costs within Britain's mental health care system, but it has largely taken place in academic and management circles. We were interested in the views of those providing care. We organised a meeting of community psychiatric nurses, general practitioners and consultant psychiatrists (funded with an educational grant from Zeneca Pharmaceuticals). Participants worked in various parts of Great Britain, including rural and inner city areas. The authors facilitated the discussion, the emphasis of which was on participants' clinical experience.

Ethnicity and outcome of appeal after detention under the Mental Health Act 1983

Aims and Method

There is insufficient research into the relationship between ethnicity and appeals against detention under mental health legislation. We sought to identify rates and success of appeals in different ethnic groups through a retrospective analysis of all detentions under the Mental Health Act 1983 over 1 year.

Results

We found high rates of appeals overall, with substantial differences between ethnic groups (36 (39%) White British compared with 71 (63%) Black Caribbean (P = 0.0001) and 21 (68%) White Irish (P = 0.01) individuals (Yates corrected chi-squared)). Success rates on appeal were very low in all groups.

Clinical Implications

There are significant ethnic differences in appeals against detention under the Mental Health Act.

Mental illness in Black and Asian ethnic minorities: pathways to care and outcomes

A substantial body of research indicates that, for people from Black and Asian ethnic minorities, access to, utilisation of and treatments prescribed by mental health services differ from those for White people (Lloyd & Moodley, 1992; for a review see Bhui, 1997). Pathways to mental health care are important, and the widely varying pathways taken in various societies may reflect many factors: the attractiveness and cultural appropriateness of services; attitudes towards services; previous experiences; and culturally defined lay referral systems (Goldberg, 1999). Contact with mental health care services may be imposed on the individual, but people who choose to engage with services usually do so only if they think that their changed state of functioning is health-related and potentially remediable through these services. In such cases, they will contact whoever they perceive to be the most appropriate carer, and these carers are often not part of a national health care network.

African–Caribbeans and schizophrenia: contributing factors

The epidemiology and management of schizophrenia have been well studied over the past few decades. In the UK, key findings that have emerged time and again are the excess prevalence and incidence rates of schizophrenia among people of African–Caribbean origin. The reasons for this excess and the implications of this finding are many. The findings may reflect a true excess or a methodological artefact related to errors in the estimation of numerator and denominator data. The findings have been increasingly accepted as better designed studies have emerged, but these still do not fully address concerns about the nature of schizophrenia in other cultural groups and in societies in which industrialisation and economic productivity of the individual are not considered to be as crucial for an individual's sense of belonging in a community.

Socio-economic deprivation and admission rates to secure forensic psychiatry services

Annual admission rates from the North-East Thames Region to maximum- and medium-secure forensic psychiatry services demonstrated a highly significant correlation with social deprivation measured at district health authority level using the Jarman UPA 8. There were specific associations with the number of unemployed persons, overcrowded households, and persons from ethnic minorities in the districts studied. There was a 10-fold difference in treated prevalence rates across the region, indicating that certain purchasing authorities may be seriously underfunded to meet the needs of their catchment area populations for secure forensic psychiatry services. Further research is required into the nature of the association between admissions to these services and social deprivation. It is readily apparent that a new formula is required for the allocation of resources in the face of such wide disparities in demand from different geographical locations.

Migration and mental illness

Human beings have moved from place to place since time immemorial. The reasons for and the duration of these migrations put extraordinary stress on individuals and their families. Such stress may not be related to an increase in mental illness for all conditions or to the same extent across all migrant groups. In this paper, we provide an overview of some observations in the field of migration and mental health, hypothesise why some individuals and groups are more vulnerable to psychiatric conditions, and consider the impact of migration experiences on provision of services and care.

Patterns of illness and care over the 5 years following onset of psychosis in different ethnic groups; the GAP-5 study

PURPOSE

Previous research has not provided us with a comprehensive picture of the longitudinal course of psychotic disorders in Black people living in Europe. We sought to investigate clinical outcomes and pattern of care in Black African and Black Caribbean groups compared with White British patients during the first 5 years after first contact with mental health services for psychosis.

METHODS

245 FEP cases aged 18-65 who presented to psychiatric services in 2005-2010 in South London (UK). Using the electronic psychiatric clinical notes in the South London and Maudsley NHS Foundation Trust (SLaM), extensive information was collected on three domains-clinical, social, and service use.

RESULTS

During the 5-year follow-up (mean = 5.1 years, s.d. = 2.4; 1251 person years) after first contact with mental health services, a higher proportion of Black African and Black Caribbean ethnicity had compulsory re-admissions (χ 2 = 17.34, p = 0.002) and instances of police involvement during an admission to a psychiatric unit (χ 2 = 22.82, p < 0.001) compared with White British ethnic group. Patients of Black African and Black Caribbean ethnicity did not differ from the ethnic group in overall functional disability and illness severity, or frequency of remission or recovery during the follow-up period. However, patients of Black ethnicity become increasing socially excluded as their illness progress.

CONCLUSIONS

The longitudinal trajectory of psychosis in patients of Black ethnicity did not show greater clinical or functional deterioration than white patients. However, their course remains characterised by more compulsion, and longer periods of admission.

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

BackgroundAlthough there are consistent reports of higher psychosis rates among immigrants, the information on mood disorders is limited.AimsTo review and quantify the difference in incidence of mood disorders in first- and second-generation immigrant (FGI and SGI) groups v. non-immigrants.MethodPubMed, EMBASE and PsycINFO were searched for articles from cohort studies reporting incidence of mood disorders among FGIs and SGIs.ResultsEighteen studies met our inclusion criteria. The summary relative risk (RR) for FGIs was 1.25 (95% CI 1.11-1.41), based on 17 effect sizes and 6120 cases, and 1.16 (95% CI 0.96-1.40) for SGIs based on three effect sizes. Men seemed at higher risk (RR = 1.29, 95% CI 1.06-1.56).ConclusionsClinicians should view FGIs as a group at risk of mood disorders, especially men. Further research is needed to understand immigrants' risk, especially in SGI.

Ideology, Camouflage or Contingency? Racism in British Psychiatry

"...Are we so sure that the racist form of intolerance results chiefly from the wrong ideas of this or that group of people about the dependence of cultural evolution on organic evolution? Might not these ideas be simply ideological camouflage for more concrete oppositions based on a desire to subjugate other groups and maintain a posi tion of power?"

Epidemiology and Sociology as Incommensurate Games: Accounts from the Study of Health and Ethnicity

The ‘discrete variables’ methodology of epidemiology is contrasted with the contextuality and complexity of sociology in general and of qualitative fieldwork in particular. Sociology has always interrogated the categories which it deploys. The lessons of the contemporary interrogation of the category ‘ethnic group’ are applied in a critique of positivistic methodologies which have tended to treat ethnic groups as natural divisions of the population. The meanings of ethnicity in health research are explored and then illustrated by detailed accounts from fieldwork. The article closes with comments on the contribution which qualitative and sociologically informed methodologies may make to epidemiological studies.

Prevalence of DSM-IV intermittent explosive disorder in Black adolescents: Findings from the National Survey of American Life, Adolescent Supplement

Little is known about the epidemiology of Diagnostic and Statistical Manual of Mental Disorders (4th ed.; DSM–IV) intermittent explosive disorder (IED) in adolescents, and no information is currently available regarding the relationship between race/ethnicity and IED among Black youth in the United States. Using the World Health Organization World Mental Health Composite International Diagnostic Interview (Adolescent Version), we estimated the prevalence, severity, and disability of IED in a national, probability sample of African American and Caribbean Black youth (ages 13–17) from the National Survey of American Life, Adolescent Supplement. Face-to-face surveys of 810 African American and 360 Caribbean Black youth were conducted between 2001 and 2003. We calculated lifetime and 12-month diagnoses of IED using diagnostic algorithms based on DSM–IV and assessed IED disability using a modified Sheehan Disability Scale. Overall findings indicated lifetime and 12-month IED prevalence rates of 9.2% and 7.0%, respectively. Lifetime prevalence rates of IED were 9.0% for African American and 12.4% for Caribbean Black teens. Within the past 12 months, 6.7% of African American and 11.5% of Caribbean Black adolescents met diagnostic criteria for IED. Lifetime and 12-month IED were associated with anxiety disorders. In addition, few teens with lifetime IED received any treatment. Findings are consistent with recent evidence that intermittent explosive disorder may be more common than previously considered, especially among adolescents. Significant acts of aggression and impairment are associated with IED, and low treatment rates indicate that more research on this disorder and intervention options is warranted.

Negative symptoms and impaired social functioning predict later psychosis in Latino youth at clinical high risk in the North American prodromal longitudinal studies consortium

AIM

Examining ethnically related variables in evaluating those at risk for psychosis is critical. This study investigated sociodemographic and clinical characteristics of Latino versus non-Latino clinical high-risk (CHR) subjects and healthy control (HC) subjects in the first North American Prodrome Longitudinal Study.

METHODS

Fifty-six Latino CHR subjects were compared to 25 Latino HC and 423 non-Latino CHR subjects across clinical and demographic variables. Thirty-nine of the 56 CHR subjects completed at least one subsequent clinical evaluation over the 2.5-year period with 39% developing a psychotic illness. Characteristics of Latino CHR subjects who later converted to psychosis ('converters') were compared to those who did not ('non-converters').

RESULTS

Latino CHR subjects were younger than non-Latino CHR subjects and had less education than Latino HC subjects and non-Latino CHR counterparts. Latino CHR converters had higher scores than Latino non-converters on the Structured Interview for Prodromal Syndromes total negative symptoms that were accounted for by decreased expression of emotion and personal hygiene/social attentiveness subsections. Latino CHR converters scored lower on the global functioning:social scale, indicating worse social functioning than Latino non-converters.

CONCLUSION

Based on this sample, Latino CHR subjects may seek treatment earlier and have less education than non-Latino CHR subjects. Deficits in social functioning and impaired personal hygiene/social attentiveness among Latino CHR subjects predicted later psychosis and may represent important areas for future study. Larger sample sizes are needed to more thoroughly investigate the observed ethnic differences and risk factors for psychosis in Latino youth.

Psychological Wellbeing in Three Groups of Skilled Immigrants to New Zealand

The present study sought to investigate the current levels of psychological wellbeing in three immigrant groups to New Zealand. In addition, we sought to determine whether aspects of the acculturation process were related to mental health outcomes. This is a cross–sectional study from the fifth wave of annual in-depth interviews with three groups of recently arrived skilled immigrants from India, the People's Republic of China and South Africa. Interviews focused on international contacts and the migration of relatives and friends, housing, language, qualifications and employment, and social participation. Participants were also asked about health difficulties, homesickness, and whether they felt settled in New Zealand. The SF-36 Health Status Questionnaire (Ware, 1997), assessed the respondent's functional status and wellbeing in relation to four health concepts: vitality, social functioning, role limitations due to emotional health, and general mental wellbeing. The immigrant group differed significantly from the New Zealand population on only one of the four mental health scales, Vitality, with immigrants reporting higher levels. Different acculturation factors were found to predict different mental health subscales in regression analyses. Gender, home contact and health difficulty explained 22% of the unique variance in Vitality; employment status and health difficulty explained 18% of the variance in Social Functioning; health difficulty significantly contributed to the explained variance (14%) in the Role limitations due to emotional health subscale; gender, home contact and health difficulty explained 27% of the variance in the Mental Health subscale. There was little evidence for lower levels of psychological wellbeing for the three immigrant groups compared to the general New Zealand population, nor for differences between the three groups. However, results highlight the importance of differential predictors in the understanding of psychological health in migrant groups.

Schizophrenia and other psychotic disorders in Caribbean-born migrants and their descendants in England: systematic review and meta-analysis of incidence rates, 1950-2013

PURPOSE

Increased risk of schizophrenia and other psychotic disorders among black Caribbean migrants and their descendants have been described since the 1960s. It remains unclear whether this risk varies over time, between rural and urban areas, or according to methodological artefact.

METHODS

We conducted a systematic review of the incidence of adult-onset psychotic disorders in black Caribbean groups relative to the baseline population in England, published 1950-2013. Subject to sufficient data (N ≥ 5) we used random effects meta-analyses to estimate pooled incidence rates (IR) and rate ratios (IRR) of seven psychotic disorder outcomes, and meta-regression to inspect whether any variation was attributable to study-level methodological features, including case ascertainment, denominator reliability, choice of baseline population and study quality.

RESULTS

Eighteen studies met inclusion for review. Sixteen demonstrated statistically significant elevated incidence rates in the black Caribbean group, present across all major psychotic disorders, including schizophrenia and bipolar disorder. Methodological quality increased over time (p = 0.01), but was not associated with estimated IR or IRR. For schizophrenia (N = 11 studies) the pooled IRR in the black Caribbean group was 4.7 (95 % CI 3.9-5.7) relative to the baseline; no evidence of publication bias was observed. We found weak evidence to suggest schizophrenia IRRs were smaller from studies in more urban settings (odds ratio 0.98; 95 % CI 0.96-1.00; p = 0.06).

CONCLUSIONS

Higher incidence rates of psychotic disorders have been present for more than 60 years amongst black Caribbean ethnic groups in England, despite improved study methodologies over time. Aetiological explanations appear to more parsimoniously account for this excess than methodological biases.

The urban risk and migration risk factors for schizophrenia: are cats the answer?

Being born in and/or raised in an urban area is a proven risk factor for developing schizophrenia. Migrating from countries such as Jamaica or Morocco to countries such as England or the Netherlands is also a proven risk factor for developing schizophrenia. The transmission of Toxoplasma gondii oocysts to children is reviewed and proposed as a partial explanation for both of these risk factors.

A meta-analysis of ethnic differences in pathways to care at the first episode of psychosis

OBJECTIVE

We sought to systematically review the literature on ethnic differences in the likelihood of general practitioner (GP) involvement, police involvement, and involuntary admission on the pathway to care of patients with first-episode psychosis (FEP).

METHOD

We searched electronic databases and conducted forward and backward tracking to identify relevant studies. We calculated pooled odds ratios (OR) to examine the variation between aggregated ethnic groups in the indicators of the pathway to care.

RESULTS

We identified seven studies from Canada and England that looked at ethnic differences in GP involvement (n=7), police involvement (n=7), or involuntary admission (n=5). Aggregated ethnic groups were most often compared. The pooled ORs suggest that Black patients have a decreased likelihood of GP involvement (OR=0.70, 0.57-0.86) and an increased likelihood of police involvement (OR=2.11, 1.67-2.66), relative to White patients. The pooled ORs were not statistically significant for patients with Asian backgrounds (GP involvement OR=1.23, 0.87-1.75; police involvement OR=0.86, 0.57-1.30). There is also evidence to suggest that there may be ethnic differences in the likelihood of involuntary admission; however, effect modification by several sociodemographic factors precluded a pooling of these data.

CONCLUSION

Ethnic differences in pathways to care are present at the first episode of psychosis.

The Concept of Schizophrenia: From Unity to Diversity

After over 100 years of research without clarifying the aetiology of schizophrenia, a look at the current state of knowledge in epidemiology, genetics, precursors, psychopathology, and outcome seems worthwhile. The disease concept, created by Kraepelin and modified by Bleuler, has a varied history. Today, schizophrenia is considered a polygenic disorder with onset in early adulthood, characterized by irregular psychotic episodes and functional impairment, but incident cases occur at all ages with marked differences in symptoms and social outcome. Men’s and women’s lifetime risk is nearly the same. At young age, women fall ill a few years later and less severely than men, men more rarely and less severely later in life. The underlying protective effect of oestrogen is antagonized by genetic load. The illness course is heterogeneous and depressive mood the most frequent symptom. Depression and schizophrenia are functionally associated, and affective and nonaffective psychoses do not split neatly. Most social consequences occur at the prodromal stage. Neither schizophrenia as such nor its main symptom dimensions regularly show pronounced deterioration over time. Schizophrenia is neither a residual state of a neurodevelopmental disorder nor a progressing neurodegenerative process. It reflects multifactorial CNS instability, which leads to cognitive deficits and symptom exacerbations.

Violence and crime among male inpatients with severe mental illness: attempting to explain ethnic differences

BACKGROUND

Studies report that in the U.K., among men with severe mental illness (SMI), those of black Caribbean ethnicity display increased risk of aggressive behaviour, criminal convictions, and schizophrenia. The study aimed to compare aggressive behaviour and criminal convictions among men with SMI of white British, black Caribbean and black African ethnicity, and to explore factors associated with differences across ethnicities.

METHOD

Sample 1 included 1,104 male inpatients with SMI. Sample 2 included a representative sub-sample of 165 who completed interviews, and authorized access to medical and criminal files. Ethnicity was self-ascribed.

RESULTS

Staff-rated violence prior to admission, self-reported aggressive behaviour, and convictions for non-violent and violent crimes differed among men with SMI of different ethnicities. Relative to men with SMI of white British ethnicity, those of black African ethnicity showed decreased risk of aggressive behaviour, and those of black Caribbean ethnicity showed elevated risk of convictions for non-violent, and marginally, for violent crimes. Relative to men with SMI of black African ethnicity, those of black Caribbean ethnicity showed elevated risk of aggressive behaviour and criminal convictions. Proportionately more of the men of both black African and black Caribbean ethnicity, than those of white British ethnicity, presented schizophrenia spectrum disorders. Multivariate analyses failed to identify factors that would explain differences in aggressive behaviour, and criminal convictions across ethnic groups.

CONCLUSIONS

Differences in four different measures of aggressive and antisocial behaviour among men with SMI of different ethnicities were observed but factors associated with these differences were not found.

Clinical symptoms of psychotic episodes and 25-hydroxy vitamin D serum levels in black first-generation immigrants

OBJECTIVE

Dark-skinned immigrants have a higher risk for schizophrenia and other psychoses than other immigrants. The first British studies reported that first-generation immigrants (FGIs) from the Caribbean presented atypical psychoses. This study examines the characteristics of psychotic episodes in black FGIs to Canada.

METHOD

The charts of 18 FGIs from Africa and Haiti, extracted from a series of 20 black patients consecutively admitted to Psychiatry, were retrospectively reviewed regarding clinical features, diagnoses and vitamin D levels.

RESULTS

Young FGIs presented acute psychotic episodes with abrupt onset, florid positive symptoms, few negative symptoms and good evolution. The onset was more insidious in older FGIs. Overall, catatonia was very frequent (28%), and mood symptoms still more frequent (44%). No cognitive decline was observed during follow-up. Serum levels of 25-hydroxy vitamin D were in the insufficiency range. Supplementation at 1000 IU/day did not restore normal levels.

CONCLUSION

The clinical features of psychotic episodes in black FGIs are similar to those reported in dark-skinned FGIs to other countries. They are also observed in other immigrants and in non-immigrants. These atypical psychoses are possibly related to a recent vitamin D deficit. This hypothesis should be tested by clinical trials of sufficient vitamin D supplementation.

Social capital, narratives of fragmentation, and schizophrenia: an ethnographic exploration of factors shaping African-Caribbeans' social capital and mental health in a North London community

Recent research studies have proposed the concept of social capital-broadly defined as social networks, community cohesion, and participation-as a social risk factor for health disparities and the high rates of schizophrenia among individuals of Caribbean heritage in England. However, many of the existing studies lack sociohistorical contexts and do not capture the experiential dimensions of individuals' social capital. This paper adds to the debate by examining the mechanisms and sociocultural processes that shape the understandings and experiences of social capital in a sample of British African-Caribbeans. Drawing on ethnographic and survey data collected over 2 years in a North London community, the paper focuses on participants' every day experiences and the stories they tell about their community and social fragmentation. These stories suggest that social changes and historical forces interact to affect the social capital and emotional well-being of local African-Caribbean residents. I argue that my participants' collective narratives about their social environment contribute to the emotional tone of the community, and create added stressors that may impact their mental health.

Disparate patterns of hospitalisation reflect unmet needs and persistent ethnic inequalities in mental health care: the Scottish health and ethnicity linkage study

OBJECTIVES

The presence and extent of mental health inequalities in Scotland is unclear. We investigated ethnic variations in psychiatric hospitalisations and compulsory treatment in relation to socioeconomic indicators.

DESIGN

In a retrospective cohort study design, using data linkage methods, we examined ethnic variations in psychiatric [any psychiatric, mood (affective), and psychotic disorders) hospitalisations and use of the Mental Health (Care and Treatment) (Scotland) Act 2003 (Emergency Detentions (ED), Short-Term Detentions (STD) and Compulsory Treatment Orders (CTO)] using age (and sex for compulsory treatment), car ownership, and housing tenure adjusted risk ratios (RR). 95% CIs for the data below exclude the reference White Scottish group value (100).

RESULTS

Compared to the White Scottish population, Other White British men and women had lower hospitalisation from any psychiatric disorder (RR = 77.8, 95% CI: 71.0-85.2 and 85.8, 95% CI: 79.3-92.9), mood disorder (91.2, 95% CI: 86.9-95.8 and 83.6, 95% CI: 75.1-93.1), psychotic disorder (67.1, 95% CI: 59.9-75.2 and 78.5, 95% CI: 67.6-91.1), CTO (84.6, 95% CI: 72.4-98.9) and STD (88.2, 95% CI: 78.6-99.0). Any Mixed Background women had higher hospitalisation from any psychiatric disorder (137.2, 95% CI: 110.9-169.6) and men and women had a higher risk of psychotic disorder (200.6, 95% CI: 105.7-380.7 and 175.5, 95% CI: 102.3-301.2), CTO (263.0, 95% CI: 105.4-656.3), ED (245.6, 95% CI: 141.6-426.1) and STD (311.7, 95% CI: 190.2-510.7). Indian women had lower risk of any psychiatric disorder (43.2, 95% CI: 28.0-66.7). Pakistani men had lower risk of any psychiatric disorder (78.7, 95% CI: 69.3-89.3), and higher risk of mood disorders (117.5, 95% CI: 100.2-137.9). Pakistani women had similar risk of any psychiatric and mood disorder however, a twofold excess risk of psychotic disorder (227.3, 95% CI: 195.8-263.8). Risk of STD was higher in South Asians (136.9, 95% CI: 109.0-171.9). Chinese men and women had the lowest risk of hospitalisation for any psychiatric disorder (35.3, 95% CI: 23.2-53.7 and 44.5, 95% CI: 30.3-65.5) and mood disorder (51.5, 95% CI: 31.0-85.4 and 47.5, 95% CI: 23.2-97.4) but not psychotic disorders and higher risk for CTO (181.4, 95% CI: 121.0-271.0). African women had higher risk of any psychiatric disorder (139.4, 95% CI: 119.0-163.2). African men and women had the highest risk for psychotic disorders (230.8, 95% CI: 177.8-299.5 and 240.7, 95% CI: 163.8-353.9) and were also overrepresented in STD (214.3, 95% CI: 122.4-375.0) and CTO (486.6, 95% CI: 231.9-1021.1). Differences in hospitalisations were not fully attenuated when adjusted for car ownership and housing tenure and the effect of these adjustments varied by ethnic group.

CONCLUSION

Our data show disparate patterns of psychiatric hospitalisations by ethnic group in Scotland providing new observations concerning the mental health care experience of Chinese, Mixed background and White subgroups not fully explained by socioeconomic indicators. For South Asian and Chinese groups in particular, our data indicate under and late utilisation of mental health services. These data call for monitoring and review of services.

First episode psychosis patients show impaired cognitive function--a study of a South Asian population in the UK

BACKGROUND

Cognitive deficits are a core symptom of schizophrenia, severely debilitating and untreated by current medication. However, to date there is limited research focusing on the precise nature of the cognitive disturbances at first episode in ethnic populations. Improved understanding of this will allow improved approaches to therapy. The aim of this study was to investigate cognitive function with a first episode of psychosis South Asian patients.

METHODS

Twenty South Asian first episode psychosis patients and 15 healthy South Asian matched controls were recruited. All were second generation South Asian people living in the UK. Subjects who took part in the study completed the Positive and Negative Syndrome Scale (patient group), the Wechsler Test of Adult Reading and a battery of neuropsychological assessments to assess specific domains of cognition of relevance to Measurement and Treatment Research to Improve Cognition in Schizophrenia using the Cambridge Neuropsychological Test Automated Battery (CANTAB) (all groups).

RESULTS

Results show that first episode patients performed significantly worse than controls across all cognitive domains tested using CANTAB. Significant impairments were found in tests of visual and spatial memory, executive function, working memory, spatial planning and attention. Importantly, a number of cognitive performance indices (visual memory, spatial memory, executive function) were positively correlated with the severity of negative symptoms.

CONCLUSION

We demonstrate that first episode South Asian patients display significant and specific cognitive deficits with evidence to support an association between negative symptoms and certain cognitive domains at first episode in this patient population.

Training to recognise the early signs of recurrence in schizophrenia

BACKGROUND

Schizophrenia has a lifetime prevalence of less than one per cent. Studies have indicated that early symptoms that are idiosyncratic to the person with schizophrenia (early warning signs) often precede acute psychotic relapse. Early warning signs interventions propose that learning to detect and manage early warning signs of impending relapse might prevent or delay acute psychotic relapse.

OBJECTIVES

To compare the effectiveness of early warning signs interventions plus treatment as usual involving and not involving a psychological therapy on time to relapse, hospitalisation, functioning, negative and positive symptomatology.

SEARCH METHODS

Search databases included the Cochrane Schizophrenia Group Trials Register (July 2007 and May 2012) which is based on regular searches of BIOSIS, CENTRAL, CINAHL, EMBASE, MEDLINE and PsycINFO. References of all identified studies were reviewed for inclusion. We inspected the UK National Research Registe and contacted relevant pharmaceutical companies and authors of trials for additional information.

SELECTION CRITERIA

We included all randomised clinical trials (RCTs) comparing early warning signs interventions plus treatment as usual to treatment as usual for people with schizophrenia or other non-affective psychosis

DATA COLLECTION AND ANALYSIS

We assessed included studies for quality and extracted data. If more than 50% of participants were lost to follow-up, the study was excluded. For binary outcomes, we calculated standard estimates of risk ratio (RR) and the corresponding 95% confidence intervals (CI), for continuous outcomes, we calculated mean differences (MD) with standard errors estimated, and for time to event outcomes we calculated Cox proportional hazards ratios (HRs) and associated 95 % CI. We assessed risk of bias for included studies and assessed overall study quality using the GRADE approach.

MAIN RESULTS

Thirty-two RCTs and two cluster-RCTs that randomised 3554 people satisfied criteria for inclusion. Only one study examined the effects of early warning signs interventions without additional psychological interventions, and many of the outcomes for this review were not reported or poorly-reported. Significantly fewer people relapsed with early warning signs interventions than with usual care (23% versus 43%; RR 0.53, 95% CI 0.36 to 0.79; 15 RCTs, 1502 participants; very low quality evidence). Time to relapse did not significantly differ between intervention groups (6 RCTs, 550 participants; very low quality evidence). Risk of re-hospitalisation was significantly lower with early warning signs interventions compared to usual care (19% versus 39%; RR 0.48, 95% CI 0.35 to 0.66; 15 RCTS, 1457 participants; very low quality evidence). Time to re-hospitalisation did not significantly differ between intervention groups (6 RCTs; 1149 participants; very low quality evidence). Participants' satisfaction with care and economic costs were inconclusive because of a lack of evidence.

AUTHORS' CONCLUSIONS

This review indicates that early warning signs interventions may have a positive effect on the proportions of people re-hospitalised and on rates of relapse, but not on time to recurrence. However, the overall quality of the evidence was very low, indicating that we do not know if early warning signs interventions will have similar effects outside trials and that it is very likely that further research will alter these estimates. Moreover, the early warning signs interventions were used along side other psychological interventions, and we do not know if they would be effective on their own. They may be cost-effective due to reduced hospitalisation and relapse rates, but before mental health services consider routinely providing psychological interventions involving the early recognition and prompt management of early warning signs to adults with schizophrenia, further research is required to provide evidence of high or moderate quality regarding the efficacy of early warning signs interventions added to usual care without additional psychological interventions, or to clarify the kinds of additional psychological interventions that might aid its efficacy. Future RCTs should be adequately-powered, and designed to minimise the risk of bias and be transparently reported. They should also systematically evaluate resource costs and resource use, alongside efficacy outcomes and other outcomes that are important to people with serious mental illness and their carers.

Course and outcome of psychosis in black Caribbean populations and other ethnic groups living in the UK: a systematic review

BACKGROUND

A higher incidence of psychosis has repeatedly been reported in black Caribbean populations in the UK. This has been attributed to a number of biological, psychological and sociocultural causes, including black Caribbean populations having a different illness course and outcome compared to other ethnic populations living in the UK.

AIMS

A systematic review of UK-based quantitative studies, which compared at least two aspects of outcome in black Caribbean populations and other ethnic populations living in the UK, was conducted to assess whether the current body of research suggests that there are differences in the course and outcome of psychoses for these populations.

METHOD

A wide variety of databases were searched using MeSH terms and keywords. Studies were evaluated according to specified inclusion criteria and analysed using predefined scoring criteria.

RESULTS

Searches yielded a heterogeneous collection of studies. Large variances in methodological approaches and the quality of studies were reported. Many studies reported little or no difference between black Caribbean and other ethnic populations living in the UK.

CONCLUSIONS

Emphasis is placed on the unreliability of these findings given the methodological limitations of the studies, and the need for higher-quality research in this area is highlighted.

Incidence of schizophrenia and other psychoses in England, 1950-2009: a systematic review and meta-analyses

BACKGROUND

We conducted a systematic review of incidence rates in England over a sixty-year period to determine the extent to which rates varied along accepted (age, sex) and less-accepted epidemiological gradients (ethnicity, migration and place of birth and upbringing, time).

OBJECTIVES

To determine variation in incidence of several psychotic disorders as above.

DATA SOURCES

Published and grey literature searches (MEDLINE, PSycINFO, EMBASE, CINAHL, ASSIA, HMIC), and identification of unpublished data through bibliographic searches and author communication.

STUDY ELIGIBILITY CRITERIA

Published 1950-2009; conducted wholly or partially in England; original data on incidence of non-organic adult-onset psychosis or one or more factor(s) pertaining to incidence.

PARTICIPANTS

People, 16-64 years, with first -onset psychosis, including non-affective psychoses, schizophrenia, bipolar disorder, psychotic depression and substance-induced psychosis.

STUDY APPRAISAL AND SYNTHESIS METHODS

Title, abstract and full-text review by two independent raters to identify suitable citations. Data were extracted to a standardized extraction form. Descriptive appraisals of variation in rates, including tables and forest plots, and where suitable, random-effects meta-analyses and meta-regressions to test specific hypotheses; rate heterogeneity was assessed by the I²-statistic.

RESULTS

83 citations met inclusion. Pooled incidence of all psychoses (N = 9) was 31.7 per 100,000 person-years (95%CI: 24.6-40.9), 23.2 (95%CI: 18.3-29.5) for non-affective psychoses (N = 8), 15.2 (95%CI: 11.9-19.5) for schizophrenia (N = 15) and 12.4 (95%CI: 9.0-17.1) for affective psychoses (N = 7). This masked rate heterogeneity (I²: 0.54-0.97), possibly explained by socio-environmental factors; our review confirmed (via meta-regression) the typical age-sex interaction in psychosis risk, including secondary peak onset in women after 45 years. Rates of most disorders were elevated in several ethnic minority groups compared with the white (British) population. For example, for schizophrenia: black Caribbean (pooled RR: 5.6; 95%CI: 3.4-9.2; N = 5), black African (pooled RR: 4.7; 95%CI: 3.3-6.8; N = 5) and South Asian groups in England (pooled RR: 2.4; 95%CI: 1.3-4.5; N = 3). We found no evidence to support an overall change in the incidence of psychotic disorder over time, though diagnostic shifts (away from schizophrenia) were reported.

LIMITATIONS

Incidence studies were predominantly cross-sectional, limiting causal inference. Heterogeneity, while evidencing important variation, suggested pooled estimates require interpretation alongside our descriptive systematic results.

CONCLUSIONS AND IMPLICATIONS OF KEY FINDINGS

Incidence of psychotic disorders varied markedly by age, sex, place and migration status/ethnicity. Stable incidence over time, together with a robust socio-environmental epidemiology, provides a platform for developing prediction models for health service planning.

Income-related inequalities in common mental disorders among ethnic minorities in England

PURPOSE

The relative prevalence of common mental health problems among different ethnic groups in Britain is one of the least researched topics in health variations research. We calculate and compare income-related inequalities in common mental disorders among ethnic groups in Britain.

METHOD

Data from a nationally representative survey of ethnic minorities (the EMPIRIC survey) were used to calculate concentration index values to indicate the extent of income-related inequalities within and across ethnic groups.

RESULTS

Looking at income-related inequalities in common mental disorders within each of the ethnic groups, it was found that the burden of these disorders were greater for the lower income groups among the Irish, White and African Caribbean communities. Within-group inequality was less clearly defined for each of the three Asian communities: Indian, Bangladeshi and Pakistani. However, when the data were pooled and individuals were assigned income ranks in the pooled set (not within their own ethnic group), the relative position of those in lower income groups among the different groups was striking. The poor among the Bangladeshi, Pakistani and the African Caribbean groups clearly suffered both from low income and a greater burden of mental health morbidity than the other three groups. The effect of lower income is thus worse for the mental health of populations if they are African Caribbean, Pakistani or Bangladeshi than if they are White, Irish or Indian.

CONCLUSION

Inequality in mental health morbidity between and within ethnic groups is at least partly linked to income, and thus to employment and education. Tackling disadvantage and discrimination in these areas could help to tackle the challenge of mental ill-health.

Understanding patients in multicultural settings: a personal reflection on ethnicity and culture in clinical practice

OBJECTIVE

To identify and discourse on the complexities of ethnicity and culture, their role in the social and psychological functioning of patients and their potential impact on clinical assessment and treatment of these patients in diverse cultural contexts.

DESIGN

Description of aspects of the cultural competence required by clinicians in mental health service provisions in therapeutic interactions involving the therapist and patient and also in the encounter between practitioners.

RESULTS

The four-decade clinical experience of the author, an African Jamaican psychiatrist, encompasses clinical experience in the Caribbean, North America, Europe and New Zealand. From this wealth of multicultural clinical practice the author uses personal examples of four experiences with patients and professionals of African Caribbean, British and Maori ethnicities to discuss issues of ethnicity, ethnic identity and stereotyping, culture, cultural competency and alterity in the exchanges between the therapist and patient, and between therapists and the difficulties encountered in effective assessment and treatment of patients in multicultural settings. The author highlights the importance of historical experience in the psychological constitution of patients, which is the basis of a novel analytic model called psychohistoriography. This insight-oriented individual or group-focused intervention was created with the intention of attempting to heal the wounds of history; an aim that is absent from existing psychoanalytic treatment modalities.

CONCLUSION

Psychohistoriography may be a viable therapeutic option in the negotiation of cross-cultural clinical interactions.

Did the Great Irish Famine increase schizophrenia?

BACKGROUND

Evidence from regions where there have been severe dietary restriction suggests that individuals in utero during periods of starvation may subsequently be at increased risk of schizophrenia. Because Ireland was the location of a major nineteenth century famine an attempt has been made to determine whether any such evidence for famine/schizophrenia association can be found.

METHOD

The data used derive mainly from the Annual Reports on the District, Criminal and Private Lunatic Asylums supplied by the Inspectors of Lunacy in Ireland for the relevant years. Nineteenth century diagnostic labels have been adjusted to conform to schizophrenia as currently understood. Evidence relating to a possible schizophrenia increase in famine-related emigrants is examined.

RESULTS

There was an increase in first admission rates for schizophrenia of 85.7% from 1860 to 1875. Admissions for other disorders, chiefly melancholia, also increased. Similar admission increases were evident in other jurisdictions over the same period. Data relating to the mental health of famine - migrating Irish are sparse and of difficult interpretation.

CONCLUSION

The evidence from available data sources attempting to link the Irish famines of the 1840s with a subsequent increase in the incidence of schizophrenia is equivocal and inconclusive.

Ethnicity and access to an inner city home treatment service: a case-control study

There is strong evidence suggesting ethnic variations in mental health service use and disproportionate numbers of people of black ethnic origin being admitted to hospital. The objective of this study was to establish whether people of black ethnic origin had equal access to home treatment in a mental health crisis. Using a case-control design, we selected a random sample of 240 inpatient episodes and compared them with a sample of 77 home treatment episodes over a 12-month period (1 April 2008-31 March 2009). We found no difference in the proportion of people of black ethnic origin being home treated in comparison to receiving an inpatient admission, although they experienced longer hospital admissions than people of other ethnic origin. Diagnosis, housing status and source of referral were found to be significant in influencing the choice of intervention in our multivariate analysis. People of black ethnic origin were found to use home treatment to the same extent as other ethnic groups in a mental health crisis, but further research is required for the early discharge function of home treatment teams to evaluate whether this aspect of care is experienced differently by different ethnic groups.

A meta-analysis of the risk for psychotic disorders among first- and second-generation immigrants

BACKGROUND

There is increasing acceptance of migration as a risk factor for schizophrenia and related disorders; however, the magnitude of the risk among second-generation immigrants (SGIs) remains unclear. Generational differences in the incidence of psychotic disorders among migrants might improve our understanding of the relationship between migration, ethnicity and psychotic disorders. This meta-analysis aimed at determining the risk of psychotic disorders among SGIs in comparison with non-migrants and first-generation immigrants (FGIs).

METHOD

Medline, EMBASE and PsycINFO databases were searched systematically for population-based studies on migration and psychotic disorders published between 1977 and 2008. We also contacted experts, tracked citations and screened bibliographies. All potential publications were screened by two independent reviewers in a threefold process. Studies were included in the meta-analysis if they reported incidence data, differentiated FGIs from SGIs and provided age-adjusted data. Data extraction and quality assessment were conducted for each study.

RESULTS

Twenty-one studies met all inclusion criteria. A meta-analysis of 61 effect sizes for FGIs and 28 for SGIs yielded mean-weighted incidence rate ratios (IRRs) of 2.3 [95% confidence interval (CI) 2.0-2.7] for FGIs and 2.1 (95% CI 1.8-2.5) for SGIs. There was no significant risk difference between generations, but there were significant differences according to ethno-racial status and host country.

CONCLUSIONS

The increased risk of schizophrenia and related disorders among immigrants clearly persists into the second generation, suggesting that post-migration factors play a more important role than pre-migration factors or migration per se. The observed variability suggests that the risk is mediated by the social context.

Time to abandon the bio-bio-bio model of psychosis: Exploring the epigenetic and psychological mechanisms by which adverse life events lead to psychotic symptoms

Mental health services and research have been dominated for several decades by a rather simplistic, reductionistic focus on biological phenomena, with minimal consideration of the social context within which genes and brains inevitably operate. This ‘medical model’ ideology, enthusiastically supported by the pharmaceutical industry, has been particularly powerful in the field of psychosis, where it has led to unjustified and damaging pessimism about recovery. The failure to find robust evidence of a genetic predisposition for psychosis in general, or ‘schizophrenia’ in particular, can be understood in terms of recently developed knowledge about how epigenetic processes turn gene transcription on and off through mechanisms that are highly influenced by the individual's socio-environmental experiences. To understand the emerging evidence of the relationship between adverse childhood events and subsequent psychosis, it is necessary to integrate these epigenetic processes, especially those involving the stress regulating functions of the HPA axis, with research about the psychological mechanisms by which specific types of childhood trauma can lead to specific types of psychotic experiences. The implications, for research, mental health services and primary prevention, are profound.

Declaration of Interest: None of the authors have any conflicts of interest in relation to this paper.