We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Lifetime and 12-month prevalence rates of sub-clinical psychosis symptoms in a community cohort of 50-year-old individuals.
- Authors
Rössler, W.; Hengartner, M.P.; Ajdacic-Gross, V.; Haker, H.; Angst, J.
- Abstract
Abstract: Background: Estimation of prevalence rates of sub-clinical psychosis symptoms can vary considerably depending on the methodology used. Furthermore, discussions are ongoing how prevalence rates may differ across various syndromes. Method: We analyzed data from the prospective Zurich Study, assessing sub-clinical psychosis with a semi-structured clinical interview in a community cohort of 50 years old individuals. The higher-order factors of psychosis symptoms were analyzed with confirmatory factor analysis to validate the a priori specified symptom-structure. Further associations were examined with contingency tables and logistic regressions. Results: The confirmatory factor analysis was consistent with a structure with four higher-order syndromes. Those different syndromes were labeled “thought disorder” (lifetime prevalence=10.6%), “ego disorder” (4.8%), “hallucination” (9.7%), and “schizotypy” (28.2%). A strong discrepancy was noted between the 12-month prevalence of any symptoms and those considered to be severe. Twelve-month prevalence rates of distressful syndromes ranged from 0.1% for hallucinations up to 6.6% for schizotypy. The most strongly interrelated syndromes were thought disorder and ego disorder (OR=12.4). Conclusion: Our findings indicate a continuity of sub-clinical psychosis within the general population even though only a small proportion suffers from distressing symptoms. Our analyses showed that the syndromes identified here are similar to those found in full-blown schizophrenia, albeit in an attenuated form.
- Subjects
DISEASE prevalence; PSYCHOSES; SYMPTOMS; SCHIZOPHRENIA; COHORT analysis; INDIVIDUAL differences; PATHOLOGICAL psychology; CONFIRMATORY factor analysis
- Publication
European Psychiatry, 2013, Vol 28, Issue 5, p302
- ISSN
0924-9338
- Publication type
Article
- DOI
10.1016/j.eurpsy.2012.05.001