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  • Correlates of delusion-like experiences in a non-psychotic community sample

    Author(s)
    Varghese, Daniel
    Scott, James
    McGrath, John
    Griffith University Author(s)
    McGrath, John J.
    Year published
    2008
    Metadata
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    Abstract
    Objective: Several large population-based studies have reported that otherwise-well individuals endorse items related to delusion-like experiences. The aim of the present study was to examine selected correlates of delusion-like experiences in a sample of non-psychotic individuals. Method: Subjects (n=310) were screened with the Diagnostic Interview for Psychosis in order to exclude psychotic disorders. Delusion-like experiences were assessed with the Peters Delusional Inventory (PDI). Non-parametric statistics were used to assess the relationship between total PDI score and a range of demographic (age, sex, migrant ...
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    Objective: Several large population-based studies have reported that otherwise-well individuals endorse items related to delusion-like experiences. The aim of the present study was to examine selected correlates of delusion-like experiences in a sample of non-psychotic individuals. Method: Subjects (n=310) were screened with the Diagnostic Interview for Psychosis in order to exclude psychotic disorders. Delusion-like experiences were assessed with the Peters Delusional Inventory (PDI). Non-parametric statistics were used to assess the relationship between total PDI score and a range of demographic (age, sex, migrant status, paternal age), physical (minor physical anomalies) symptom-related variables (hallucinations, awareness of thought disorder) and family history of mental illness. Results: The median (range) PDI score was 4 (0-26), while one-third of the subjects endorsed seven or more items. The presence of a family history of any psychiatric condition was significantly correlated with a higher PDI score. PDI score was significantly positively correlated with endorsement of hallucinations and awareness of thought disorder. PDI was not significantly associated with sex, family history of schizophrenia, paternal age, migrant status nor scores related to minor physical anomalies. There was a trend level association between younger age and higher PDI score. Conclusion: Delusion-like experiences are relatively common in non-psychotic individuals. The association with a family history of mental disorders provides clues to the mechanisms underlying the profile of delusion-like experience.
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    Journal Title
    Australian and New Zealand Journal of Psychiatry
    Volume
    42
    Issue
    6
    Publisher URI
    http://informahealthcare.com/doi/abs/10.1080/00048670802050595
    Subject
    Epidemiology
    Medical and Health Sciences
    Psychology and Cognitive Sciences
    Publication URI
    http://hdl.handle.net/10072/26990
    Collection
    • Journal articles

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