Abstract:
BACKGROUND:The presence of a psychosis continuum is suggested by studies showing that schizophrenia and non-clinical psychotic symptoms in the general population share the same risk factors. However, to our knowledge no large-scale studies have been conducted which examine the specificity of these risk factors in the general population. AIM:To investigate whether socio-demographic characteristics associated with non-clinical psychotic symptoms are also associated with other psychiatric symptoms. And secondly, to examine to what extent concomitant psychiatric symptoms explain the relationship between socio-demographic characteristics and non-clinical psychotic symptoms. METHODS:In a general population sample of 4894 subjects (mean age 39 years, 45% men) from the Utrecht Health Project we investigated the associations of socio-demographical characteristics with non-clinical psychotic symptoms and other psychiatric symptoms by using the SCL-90. We examined these associations using multivariable logistic regression analyses with and without controlling for the presence of other psychiatric symptoms. RESULTS:Participants with non-clinical psychotic symptoms had an 89% probability of concomitant depressive, anxiety or phobic anxiety symptoms, compared to 11% in participants without psychotic symptoms. The risk profiles for non-clinical psychotic symptoms and other psychiatric symptoms were largely similar. Non-Dutch ethnicity was most strongly associated with non-clinical psychotic symptoms. Adjusting for other psychiatric symptoms did not increase the specificity of the risk factors. CONCLUSION:Socio-demographic risk factors for non-clinical psychotic symptoms in the general population are also risk factors for other psychiatric symptoms. The relationship between these risk factors and psychotic symptoms are for a substantial part explained by an increase in other psychiatric symptoms.
journal_name
Schizophr Resjournal_title
Schizophrenia researchauthors
Breetvelt EJ,Boks MP,Numans ME,Selten JP,Sommer IE,Grobbee DE,Kahn RS,Geerlings MIdoi
10.1016/j.schres.2010.03.033subject
Has Abstractpub_date
2010-07-01 00:00:00pages
184-90issue
1-3eissn
0920-9964issn
1573-2509pii
S0920-9964(10)01204-1journal_volume
120pub_type
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