I.H. Minas

The Treated Prevalence of Mental Disorder Amongst Immigrants and the Australian-Born: Community and Primary-Care Rates

The objective of the study was to explore the relationship between birthplace and the treated prevalence of mental disorder in Australia. Treated prevalence rates were derived from two surveys. These were the 1989-1990 National Health Survey, carried out by the Australian Bureau of Statistics, and the general practice component of a one-day mental health census carried out in the state of Victoria by the authors in 1993. Differences due to the age and sex composition of birthplace groups were controlled statistically. Treated rates of mental disorder, and the use of psychotropic medication, were consistently high amongst those born in Greece, and low amongst those born in the U.K./Ireland or in South East Asia, compared to the Australian-born. Country of birth has a significant effect on the treated prevalence of mental disorder, as reported by patients or their doctor. Further research is needed to reveal the underlying causes of these differences.

The three-syndrome model of schizophrenia: meta-analysis of an artefact.

In two recent studies, Smith et al. (Smith, D.A., Mar, C.M., Turoff, B.K., 1998. The structure of schizophrenic symptoms: a meta-analytic confirmatory factor analysis. Schizophr. Res. 31, 57-70) and Grube et al. (Grube, B.S., Bilder, R.M., Goldman, R.S., 1998. Meta-analysis of symptom factors in schizophrenia. Schizophr. Res. 31, 113-120) used meta-analysis to examine the syndromal structure of schizophrenia. A limitation of both these studies is that the nine subscale scores from Andreasens Scales for Assessment of Positive and Negative symptoms formed the basis of the analyses. These nine ratings, only four of which represent positive symptoms, do not adequately respresent the diversity of positive symptoms. A review of studies that examined the correlation between the individual items of these scales failed to support the classification of symptoms into these nine subgroups. Studies that indicated low numbers of syndromes suffered from one or more of the following limitations: (1) samples that were restricted to chronic schizophrenia, (2) exclusion of many items from analysis, and (3) a poor fit of the symptom model to the data. Studies not limited in these ways indicated the presence of at least 11 major dimensions of schizophrenic symptomatology, not including affective symptoms. It is concluded that the three-syndrome model of schizophrenia is largely an artefact of inadequate measurement at the symptom level.

Mental health and global movement of people

Migration is a key part of globalisation and the social cultural economic and political forces of globalisation have substantially changed the determinants and consequences of migration. 170 million people live outside their country of origin and every year more than 700 million people cross national boundaries. The public-health importance of this massive movement of people is apparent for communicable diseases and although less visible is no less important for mental health. Although globalisation promises universal economic and social benefits it leads to increased marginalisation unemployment erosion of job security increased poverty reduced access to health care and education and reduced social provision for people who are ill or unemployed. Many factors that lead to permanent and temporary migration are products of globalisation and are determinants of mental health and illness. Rapidly emerging market economies need cheap labour which might involve women from rural areas with poor education who have been separated from their family and who have access to few legal protections. (excerpt)

Cultural diversity in Australian medical education

The present study sought to explore the relevance of cultural dimensions and cultural diversity among overseas and local medical students. The main comparison among the fourth year medical students studied was between Asian origin and Anglophone background students. The measures used included cultural variation, reasons for studying medicine, learning approaches and strategies, patient interaction confidence, and medical practices anxieties. Results indicated cultural differences between the two groups, and relationships between cultural variables and, in particular, reasons for studying medicine, learning approaches and strategies, and patient interaction confidence. Results were interpreted according to Hofstedes(1980, 1986) theory of cultural dimensions as they may apply in the educational setting.

Is social skills performance a correlate of schizophrenia subtypes

53 inpatients with a DSM-III diagnosis of schizophrenia were assessed in the week prior to discharge from hospital on measures of social skills performance and on severity of positive and negative symptoms. A cluster analysis based on the total positive and negative symptom scores resulted in three groups. The group with the least negative symptoms exhibited the best social skills performance. The findings add a further dimension to the validity of the subtyping of schizophrenia on the basis of positive and negative symptoms.

Psychometric properties of the Manchester Scale

This article reports a preliminary investigation of the psychometric properties of the Manchester Scale (MS). Fifty‐three patients were assessed on the instrument, 33 at time 1 (7–10 days after admission) and 53 at time 2 (during the week prior to discharge). Interrater reliabilities were generally good at time 2. The factor analyses conducted on the 8 MS items at times 1 and 2 suggest that MS contains a heterogeneous group of items: only the MS negative symptoms were related to one another. The MS positive and negative symptoms were strongly correlated with their counterpart items on the Schedules for the Assessment of Positive Symptoms and Negative Symptoms, suggesting that the MS items have good concurrent validity.

Depression, negative and positive symptoms, and the DST in schizophrenia

It has been suggested that the presence of depression is a major determinant of abnormal dexamethasone suppression in patients with schizophrenia. It has been reported that negative symptoms in patients with schizophrenia are associated with increased rates of nonsuppression. In this study of schizophrenic inpatients, the Dexamethasone Suppression Test (DST), depression and negative and positive symptom ratings were carried out in two phases of the acute episode, in the second week after administration to, and in the week prior to discharge from, hospital. There was no association between depression and cortisol nonsuppression or between negative and positive symptoms and cortisol nonsuppression either early or late in the acute episode. It is concluded that the DST has no clinical utility in identifying the non-melancholic depression which occurs commonly in schizophrenia.