Anxiety and depressive disorders are associated with delusional-like experiences: a replication study based on a National Survey of Mental Health and Wellbeing

@article{Saha2012AnxietyAD,
  title={Anxiety and depressive disorders are associated with delusional-like experiences: a replication study based on a National Survey of Mental Health and Wellbeing},
  author={Sukanta Saha and James Scott and Daniel Varghese and John J. McGrath},
  journal={BMJ Open},
  year={2012},
  volume={2}
}
Objectives There is growing evidence that delusional-like experiences (DLE) are associated with common mental disorders. In particular, a National Mental Health Survey conducted in Australia during 2007 reported an association between DLE and both anxiety disorder and major depressive disorder (MDD). However, the previous study did not examine this association with respect to subtypes of anxiety disorder nor with severity of MDD. The aim of this study was to examine the associations between DLE… 
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TLDR
Delusional-like experiences are common in the Australian community, and are associated with selected chronic physical disorders and with impaired hearing, and the direction of causality between these variables warrants closer research scrutiny.
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TLDR
The association between family history of a wide range of mental disorders and DLE in an Australian general population survey suggests that familial factors associated with DLE may be shared with aWide range of common mental disorders.
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While psychotic-like experiences are usually associated with psychotic disorders, individuals with depression and anxiety are also more likely to report these symptoms compared with well individuals.
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TLDR
The association with a family history of mental disorders provides clues to the mechanisms underlying the profile of delusion-like experience in non-psychotic individuals.
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Many of the correlates of endorsement of psychosis-screen items are also associated with psychosis, and unravelling the factors that contribute to this broader non-clinical phenotype will aid the understanding of psychosis.
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TLDR
The findings linking alcohol and tobacco use and DLE suggest that the influence of these substances on psychosis-related outcomes warrants closer scrutiny in longitudinal prospective studies.
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