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Confirmation of Synergy Between Urbanicity and Familial Liability in the Causation of Psychosis

van Os, Jim, Pedersen, Carsten B., Mortensen, Preben B.·2004·American Journal of Psychiatry

Abstract

OBJECTIVE: This study replicated a previous report that there may be substantial synergism between urbanicity (a proxy environmental risk factor) and familial clustering of psychotic disorder (a proxy genetic risk factor). METHOD: The amount of synergism was estimated from the additive statistical interaction between urbanicity of place of birth and family history of schizophrenia or family history of any severe mental disorder in a population-based Danish cohort of 1,020,063 individuals. RESULTS: There was significant interaction between urbanicity and family history; between 20% and 35% of individuals who had been exposed to both of these risk factors had schizophrenia possibly because of their synergistic effects. CONCLUSIONS: The results suggest that a substantial proportion of the population morbidity force of schizophrenia may be the result of gene-environment interactions associated with urbanicity.

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Metadata

Authors
van Os, J., Pedersen, C. B., & Mortensen, P. B.
Venue
American Journal of Psychiatry
Published
2004-12-01
Volume
161
Issue
12
Pages
2312-2314
ISSN
  • 0002-953X (ISSN-L)
  • 1535-7228
OpenAlex
W2156521818
Cited by
181
References
0
FWCI
5.79
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Confirmation of Synergy Between Urbanicity and Familial Liability in the Causation of Psychosis. https://app.cochat.ai/papers/10.1176/appi.ajp.161.12.2312
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van Os, J., Pedersen, C. B., & Mortensen, P. B. (2004). Confirmation of Synergy Between Urbanicity and Familial Liability in the Causation of Psychosis. American Journal of Psychiatry. https://doi.org/10.1176/appi.ajp.161.12.2312

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.