The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Substance use in a population-based clinic sample of people with first-episode psychosis
Open accessAbstract
Background: Substance use is implicated in the cause and course of psychosis. Aims: To characterise substance and alcohol use in an epidemiologically representative treatment sample of people experiencing a first psychotic episode in south Cambridgeshire. Method: Current and lifetime substance use was recorded for 123 consecutive referrals to a specialist early intervention service. Substance use was compared with general population prevalence estimates from the British Crime Survey. Results: Substance use among people with first-episode psychosis was twice that of the general population and was more common in men than women. Cannabis abuse was reported in 51% of patients (n=62) and alcohol abuse in 43% (n=53). More than half (n=68, 55%) had used Class A drugs, and 38% (n=43) reported polysubstance abuse. Age at first use of cannabis, cocaine, ecstasy and amphetamine was significantly associated with age at first psychotic symptom. Conclusions: Substance misuse is present in the majority of people with first-episode psychosis and has major implications for management. The association between age at first substance use and first psychotic symptoms has public health implications.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Zammit, S., Allebeck, P., Andreasson, S., Lundberg, I., & Lewis, G. (2002) · BMJ · doi:10.1136/bmj.325.7374.1199 · Cited by 871
Cited by
Di Forti, M., Sallis, H., Allegri, F., Trotta, A., Ferraro, L., Stilo, S. A., Marconi, A., La Cascia, C., Reis Marques, T., Pariante, C., et al. (2014) · Schizophrenia Bulletin · doi:10.1093/schbul/sbt181 · Cited by 470
The genetics of bipolar disorder
Barnett, J. H., & Smoller, J. W. (2009) · Neuroscience · doi:10.1016/j.neuroscience.2009.03.080 · Cited by 407
Self-citationEpigenetic Mediation of Environmental Influences in Major Psychotic Disorders
Rutten, B. P. F., & Mill, J. (2009) · Schizophrenia Bulletin · doi:10.1093/schbul/sbp104 · Cited by 244
Houston, J. E., Murphy, J., Adamson, G., Stringer, M., & Shevlin, M. (2007) · Schizophrenia Bulletin · doi:10.1093/schbul/sbm127 · Cited by 162
Beary, M., Hodgson, R., & Wildgust, H. J. (2012) · Journal of Psychopharmacology · doi:10.1177/0269881112440512 · Cited by 79
Metadata
- Authors
- Barnett, J. H., Werners, U., Secher, S. M., Hill, K. E., Brazil, R., Masson, K., Pernet, D. E., Kirkbride, J. B., Murray, G. K., Bullmore, E. T., & Jones, P. B.
- Venue
- British Journal of Psychiatry
- Publisher
- Royal College of Psychiatrists
- Published
- 2007-06
- Volume
- 190
- Issue
- 6
- Pages
- 515-520
- ISSN
- 0007-1250 (ISSN-L)
- 1472-1465
- OpenAlex
- W2111190504
- Cited by
- 271
- References
- 1
- FWCI
- 12.92
- Type
- journal article
- Language
- en
- Open access
- bronze
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Substance use in a population-based clinic sample of people with first-episode psychosis. https://app.cochat.ai/papers/10.1192/bjp.bp.106.024448
- The paper
- Barnett, J. H., Werners, U., Secher, S. M., Hill, K. E., Brazil, R., Masson, K., Pernet, D. E., Kirkbride, J. B., Murray, G. K., Bullmore, E. T., & Jones, P. B. (2007). Substance use in a population-based clinic sample of people with first-episode psychosis. British Journal of Psychiatry. https://doi.org/10.1192/bjp.bp.106.024448
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
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.