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Self-reported psychotic symptoms in the general population: Results from the longitudinal study of the British National Psychiatric Morbidity Survey
Open accessAbstract
BACKGROUND: Scarce longitudinal data exist on the occurrence of psychotic symptoms in the general population. AIMS: To estimate the incidence of, and risk factors for, self-reported psychotic symptoms in Great Britain. METHOD: Data from the 18-month follow-up of a national survey were used. Incident cases were those who endorsed one or more items on the Psychosis Screening Questionnaire at follow-up, but not at baseline. The association between factors recorded at baseline and incident self-reported symptoms was examined. RESULTS: At follow-up, 4.4% of the general population reported incident psychotic symptoms. Six factors were independently associated with incident symptoms: living in a rural area; having a small primary support group; more adverse life events; smoking tobacco; neurotic symptoms; and engaging in a harmful pattern of drinking. CONCLUSIONS: A small but not insignificant percentage of the population of Great Britain reported incident psychotic symptoms over 18 months. The risk factors for psychotic symptoms showed some similarities with risk factors for schizophrenia, but there were also some striking differences. The relationship between such risk factors and the factors that perpetuate psychotic symptoms remains to be ascertained.
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“In the NPMS (21) there was an association between cannabis dependence and incident psychotic symptoms 18 months later in the unadjusted analysis, but this attenuated and CIs crossed the null after adjustment for confounders.”
From Association Between Cannabis and Psychosis: Epidemiologic Evidence (2016) · cites this paper as [21]
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“In the NPMS (21) there was an association between cannabis dependence and incident psychotic symptoms 18 months later in the unadjusted analysis, but this attenuated and CIs crossed the null after adjustment for confounders.”
From Association Between Cannabis and Psychosis: Epidemiologic Evidence (2016) · cites this paper as [21]
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Metadata
- Authors
- Wiles, N. J., Zammit, S., Bebbington, P., Singleton, N., Meltzer, H., & Lewis, G.
- Affiliations
- University of Bristol (GB)
- Cardiff University (GB)
- The Royal Free Hospital (GB)
- Home Office (GB)
- Office for National Statistics (GB)
- Corresponding author
- Wiles, Nicola J.
- Venue
- British Journal of Psychiatry
- Publisher
- Royal College of Psychiatrists
- Published
- 2006-06
- Volume
- 188
- Issue
- 6
- Pages
- 519-526
- ISSN
- 0007-1250 (ISSN-L)
- 1472-1465
- OpenAlex
- W2120843048
- Cited by
- 245
- References
- 39
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 4 · 2023: 10 · 2022: 9 · 2021: 10 · 2020: 12 · 2019: 5 · 2018: 10 · 2017: 13 · 2016: 13 · 2015: 16 · 2014: 15 · 2013: 13 · 2012: 22
- FWCI
- 8.65
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- The British Journal of Psychiatry (publishedVersion)
- PubMed (publishedVersion)
- UCL Discovery (University College London) (submittedVersion)
- ORCA Online Research @Cardiff (Cardiff University) (submittedVersion)
- Bristol Research (University of Bristol) (submittedVersion)
- Explore Bristol Research (submittedVersion)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
- Health Sciences › Medicine › Psychiatry and Mental health › Mental Health Treatment and Access
- Social Sciences › Arts and Humanities › Philosophy › Mental Health and Psychiatry
- Keywords
- psychotic symptoms, incidence, risk factors, general population, rural residence, social support, life events, smoking, neurotic symptoms, hazardous drinking, schizophrenia risk factors
- MeSH terms
- Adolescent, Adult, Aged, Epidemiologic Methods, Female, United Kingdom, Humans, Life Change Events, Male, Middle Aged, Psychiatric Status Rating Scales, Psychotic Disorders, Rural Health, Self Disclosure, Smoking, Social Support, Socioeconomic Factors, Alcohol-Related Disorders
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