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Biomedical subjects

A Jablensky

Publications and source records attributed to A Jablensky.

At least 37 records · Page 2Linked to original sources
PubMed1997

Influenza epidemics and incidence of schizophrenia, affective disorders and mental retardation in Western Australia: no evidence of a major effect.

In-utero exposure to influenza has been implicated as a risk factor for developmental CNS damage. This study tests the hypothesis that in-utero exposure to influenza: (1) in the second gestational trimester is associated with an increased risk of schizophrenia and affective psychoses; and (2) in the first gestational trimester is associated with an increased risk of mental retardation. Analysis was confined to 1852 cases on the Western Australian psychiatric case register with ICD-9 diagnoses of schizophrenia, affective psychoses, or neurotic depression (comparison group), and 804 cases on the Intellectual Handicap Register with mental retardation that were related to 82,963 'exposed' and 32,462 'non-exposed' births between 1950 and 1960 in the total population of Western Australia. The data were examined for effects associated with six influenza epidemics in the period 1950-1960. Using relative risk ratios for individual epidemics as well as Poisson regression and a proportional hazards model to examine systematic effects for the whole period, no major effect could be identified for maternal influenza on the incidence of schizophrenia, affective psychoses and neurotic depression, despite sufficient statistical power to detect an effect. However, a possible effect was found for mental retardation in males exposed in the first and second gestational trimester.

Adolescent↗
PubMed1997

Is the earlier age at onset of schizophrenia in males a confounded finding? Results from a cross-cultural investigation.

BACKGROUND: The finding of an earlier age at onset of schizophrenia in males compared with females, replicated across a number of studies, appears to be so robust as to support hypotheses about gender differences in the aetiology of the disorder. However, the possibility that this observed gender effect might reflect other confounding variables has not been adequately explored. METHOD: We analysed data on 778 men and 653 women, in three developing countries and in seven developed countries, who had been assessed in the WHO 10-country study of schizophrenia. We applied a generalised linear modelling strategy to estimate the unconfounded contributions of gender, family history, premorbid personality and marital status to age at onset. RESULTS: The model that explained the highest percentage of the total variance indicated strong main effects (P < 0.001) for marital status and premorbid personality, a weak effect for family history, and an attenuated effect for gender. Two independent verification procedures suggested an independent onset-delaying effect for marital status (married), more marked in males. CONCLUSIONS: The gender difference in the age at onset of schizophrenia is not a robust biological characteristic of the disorder. Failure to control for marital status and premorbid personality in male/ female comparisons of age at onset may explain a large part of the differences reported previously.

Adult↗
PubMed1995

Dementia praecox and manic-depressive insanity in 1908: a Grade of Membership analysis of the Kraepelinian dichotomy.

Grade of Membership (GoM) analysis, a multivariate classification technique based on fuzzy-set mathematics, was applied to the demographic, history, and mental-state data on 53 dementia praecox cases and 134 manic-depressive insanity cases admitted to Kraepelin's University Psychiatric Clinic in Munich in 1908. The original data recorded by Kraepelin and his collaborators on special Zählkarten (counting cards) were rated and coded in terms of the Present State Examination (PSE) Syndrome Check List. The statistical analysis resulted in a high degree of replication of Kraepelin's clinical entities. However, the dichotomy of dementia praecox and manic-depressive insanity was not fully supported. The catatonic syndrome tended to occupy an intermediate position between the two major psychoses. The possibility is discussed that catatonia in Kraepelin's time shared certain clinical features with the later diagnostic groupings of schizoaffective disorder, cycloid psychoses, and other "atypical" forms of psychotic illnesses.

Bipolar Disorder↗
PubMed1994

Symptom profiles of psychiatric disorders based on graded disease classes: an illustration using data from the WHO International Pilot Study of Schizophrenia.

The Grade of Membership (GoM) model is a classification procedure which allows a person to be a member of more than one diagnostic class. It simultaneously quantifies the degrees of membership in classes while generating the discrete symptom profiles or 'pure types' describing classes. The model was applied to the symptomatology, history, and follow-up of 1065 cases in the WHO International Pilot Study of Schizophrenia. The model produced an eight diagnostic class or 'pure type' solution, of which five were related to the diagnostic concepts of schizophrenia and paranoid disorder, two types were affective disorders, and one asymptomatic type. A subtype of paranoid schizophreniform disorder found primarily in developing countries was identified. There was a strong association between pure types and the original clinical and computer generated (CATEGO) diagnoses. A GoM based psychiatric classification might more clearly identify core disease processes than conventional classification models by filtering the confounding effects of individual heterogeneity from pure type definitions.

Adult↗
PubMed1993

Kraepelin revisited: a reassessment and statistical analysis of dementia praecox and manic-depressive insanity in 1908.

A meta-analysis was carried out on 53 cases of dementia praecox (DP) and 134 cases of manic-depressive insanity (MDI) originally diagnosed by Kraepelin or his collaborators in Munich in 1908. The original case material was coded in terms of Present State Examination syndromes and analysed statistically for internal consistency and discrimination between the two diagnostic entities. Kraepelin's DP and MDI were found to define homogeneous groups of disorders which could be clearly distinguished from one another. A CATEGO re-classification of the cases revealed an 80.2% concordance rate between Kraepelin's diagnoses and ICD-9. Cluster analysis of the original data reproduced closely Kraepelin's dichotomous classification of the psychoses but suggested that DP was a narrower concept than schizophrenia today, while MDI was a composite group including both 'typical' manic-depressive illnesses and schizoaffective disorders.

Adult↗
PubMed1992

The International Pilot Study of Schizophrenia: five-year follow-up findings.

A five-year follow-up of the patients initially included in the International Pilot Study of Schizophrenia was conducted in eight of the nine centres. Adequate information was obtained for 807 patients, representing 76% of the initial cohort. Clinical and social outcomes were significantly better for patients in Agra and Ibadan than for those in the centres in developed countries. In Cali, only social outcome was significantly better.

Activities of Daily Living↗
PubMed1992

Politics and mental health I.

The origins and evolution of psychiatry as a medical discipline since the end of the 18th century have been influenced by society's beliefs about the 'nature of man', the dominant forms of social organisation, and the level of technology which could be mobilised to modify human behaviour. These are also the themes from which politics develop. Throughout the past two centuries and up to the present day, two distinct streams can be traced in the political history of psychiatry: first, psychiatry as social control of deviance; and secondly, psychiatry as advocacy of the 'right to be different'. The 'third psychiatric revolution' which is now in progress in many parts of the world has been inspired by the second set of beliefs. It has already produced positive effects on the quality of life of many patients but is also experiencing certain setbacks. The extent to which the new approach to mental health care delivery will benefit patients and society depends not so much on psychiatry as a discipline as on the perceptions and actions of politicians.

Cross-Cultural Comparison↗
PubMed1991

The national mental health programme in the United Republic of Tanzania. A report from WHO and DANIDA.

This is the terminal report on the pilot implementation phase of the national mental health programme in the United Republic of Tanzania which was carried out as a cooperative venture between the Government of Tanzania, the Danish International Development Agency (DANIDA), and the World Health Organization (WHO). Although Tanzania had already achieved wide coverage of its population through a decentralized and easily accessible system of primary health care facilities providing the most essential services, its mental health services were poorly staffed and concentrated in a few custodial-type institutions and out-patient departments hardly capable of ensuring even one contact per year to about one-fifth of the estimated 100,000 severely mentally ill adults and 37,000 children in need of care at any given point in time. The programme design, developed jointly by the three parties involved, aimed to take full advantage of Tanzania's existing primary health care infrastructure by integrating mental health into the general health services of the country, including the 'grassroot' level of the services in the village and the district. The objectives guiding the new programme were: (i) to create an infrastructure for mental health care provision which should meet the requirements of both adequate population coverage and quality of service; (ii) to raise the community's awareness of mental health issues (including informing the community on the availability of effective means to deal with specific problems) and thus enlist its support and participation. The essential features of the adopted strategy were as follows. 1. Mental health care provision was conceived as a sub-system within the health care system, extending from rural health posts and dispensaries through rural health centres to district and regional hospitals. While full integration of mental health care within the general functions of the health workers was sought at the village and dispensary level (first echelon of care), relative differentiation and identity of mental health services were considered necessary at the district and regional levels (the second echelon). Tasks appropriate to each level of care were defined in operational terms and referral pathways were designated to enable the unobstructed access of the patient to more specialized diagnostic or therapeutic services if the problem was not within the competence of the more peripheral level. These pathways were also used in reverse when, following assessment or treatment, a patient was discharged back to the rural service with appropriate instructions about maintenance treatment and aftercare.(ABSTRACT TRUNCATED AT 400 WORDS)

Adolescent↗
PubMed1990

Relatives' expressed emotion and the course of schizophrenia in Chandigarh. A two-year follow-up of a first-contact sample.

A two-year follow-up was conducted of a subsample of the Chandigarh cohort of first-contact schizophrenic patients from the WHO Determinants of Outcome project. The patients were those living with family members who had been interviewed initially to determine their levels of expressed emotion (EE). The interview was repeated for 74% of the relatives at one-year follow-up. A dramatic reduction had occurred in each of the EE components and in the global index. No rural relative was rated as high EE at follow-up. Of the patients included in the one-year follow-up, 86% were followed for two years. In contrast to the one-year findings, the global EE index at initial interview did not predict relapse of schizophrenia over the subsequent two years. However, there was a significant association between initial hostility and subsequent relapse. The better outcome of this cohort of schizophrenic patients compared with samples from the West is partly attributable to tolerance and acceptance by family members.

Attitude to Health↗