Jean Paul Selten

..The possibility remains, however, that a common factor explains seasonal (birth rate) deficits in these disorders...

..We examined, in these groups, the risks of a first admission for manic-depressive psychosis...

..The risk of developing a schizophrenic disorder was 2.4 times higher (95% CI 1.3-4.2) in Surinamese immigrants than in residents of Surinam. The increased risk is probably due to environmental factors in The Netherlands...

..The incidence of schizophrenia among Surinamese immigrants to the Netherlands is high. The authors tested Ødegaard's hypothesis that this phenomenon is explained by selective migration...

..Lack of knowledge about the individual hair growth rate is an important limitation to the usefulness of this method...

..Previous reports on the incidence of schizophrenia in immigrant groups to The Netherlands were based on hospital data...

..It is unlikely that the high incidence of schizophrenia in Surinamese immigrants is caused by BDV, but the small number of subjects examined do not warrant definitive conclusions...

..High distress scores were best predicted by the combination of high scores for depression and high scores for insight into positive symptomatology. However, this model explained only a quarter of the variance in distress scores...

..Maternal stress during pregnancy is a possible risk factor for schizophrenia in the offspring. Using data from the Israel Psychiatric Registry we examined the impact of wars in Israel...

..To describe the early course of psychotic disorders in general and to examine whether certain variables can predict the early course of schizophrenic disorders (DSM-IV: schizophrenia, schizophreniform or schizoaffective disorder)...

..The purpose of the study was to assess the independent influences of gender and cannabis use on milestones of early course in schizophrenia...

..No study outside the UK has examined the diagnostic stability of psychotic disorders in a population-based sample...

..The prevalence of 22q11.2DS in schizophrenia patients is lower than the frequently reported prevalence of 2% or more...

..An exploration of the evidence that a history of migration is a risk factor for schizophrenia and an evaluation of those studies that seek an explanation for this...

..Intermediate phenotypes or endophenotypes may facilitate genetic research if they display a simpler mode of transmission than schizophrenia itself, i.e., if they reflect more closely the underlying genetic effects...

..However, to our knowledge no large-scale studies have been conducted which examine the specificity of these risk factors in the general population...

..Inflammatory processes may play a role in the pathophysiology of schizophrenia. The aim of this study was to determine the efficacy of adjuvant treatment with aspirin (acetylsalicylic acid) in schizophrenia spectrum disorders...

..The relative risks for male and female subjects were 0.41 (95% CI: 0.17-0.97) and 1.31 (95% CI: 0.65-2.64), respectively. These results suggest that in men NSAIDs may lower the risk of psychosis...

..The numbers of NSS at inclusion and at 2 years follow-up were similar, but there was a significant increase in the numbers of NSS in the sub-group of patients whose dosage of antipsychotic medication had increased over time...

..The possibility of an increased incidence of the disorder in Surinam (which might also explain the increased incidence among migrants) has not been ruled out by the results of this study...

..The purpose of this population-based study was to compare the risk of suicide in Dutch natives and immigrants with or without NAPD...

..We tested the hypothesis that the ethnic pattern for DUD is similar to the previously demonstrated pattern for schizophrenia...

..05 (95% CI: 0.98-1.12), respectively. The pooled results of the type B and type C studies were also negative. Given high infection rates during the pandemic (about 50%), these results do not support the maternal influenza hypothesis...

..Migration is a risk factor for the development of schizophrenia...

..It is possible that the patients with a history of OCs carry fewer genes for schizophrenia (and NSS) and 'needed' the OCs to develop schizophrenia...

..When alienation is not accompanied by audibility, it will result in the experience of thought insertion. The 2 hypothesized components are illustrated using case vignettes...

..32 (95% CI, 1.13-1.55). CONCLUSION: This meta-analysis provides evidence for a sex difference in the risk of developing schizophrenia, as reported in the published literature from the last 2 decades...

..These results suggest a relationship between family dysfunction and migration in the development of psychosis...

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..Some studies suggest that ethnic density may influence the incidence of schizophrenia. The authors investigated whether this increased incidence among immigrants depends on the ethnic density of the neighborhoods in which they live...

..Experiences of social adversity, which have been associated with persecutory delusions, and cultural factors may contribute to the observed differences in severity and content of psychopathology between Moroccans and native Dutch...

..We investigated whether the increased risk among these groups depends upon the degree to which they perceive discrimination based on race or ethnicity...

..To investigate if associations between cannabis use and psychotic symptoms occur independently, or occur as a consequence of previous-other types of-psychopathology...

..Black individuals in the UK have higher rates of contact with psychiatric emergency services than their White counterparts. It is unknown whether this is also the case in other European countries...

..8 (95% CI, 2.9-11.4) for Moroccans, 2.9 (1.6-5.0) for Surinamese, 2.3 (1.0-5.4) for Turks, and 3.5 (1.8-6.8) for immigrants from other non-Western countries...

..To assess if cannabis use is a risk factor for future psychotic symptoms, and vice versa, in adolescents and young adults from the general population...

..The authors synthesize findings of previous studies implicating migration as a risk factor for the development of schizophrenia and provide a quantitative index of the associated effect size...

..In humans, the chronic experience of social defeat may lead to sensitisation (and/or increased baseline activity) of the mesolimbic dopamine system and thereby increase the risk for schizophrenia...

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..This increased risk may result from sensitisation of the mesolimbic dopamine system and/or increased baseline activity of this system. Data supporting the social defeat hypothesis are presented...