The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.
Cannabis affects the severity of schizophrenic symptoms: results of a clinical survey
Abstract
Synopsis: Data on the history of cannabis use and a spot urine test for cannabinoids were obtained for 137 schizophrenics in treatment. Subjects who were using cannabis during the 6-month observation period presented with a significantly higher degree of delusional and hallucinatory activity than those who did not. Moreover, the group using cannabis made a higher average number of visits to the hospital during the same period. The status of cannabis use appeared to contribute to such variance more than did other relevant factors (age, stage of the illness, amount of medication prescribed, occasional use of other psychoactive substances).
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Citations
Cites
CANNABIS-ASSOCIATED PSYCHOSIS WITH HYPOMANIC FEATURES
ROTTANBURG, D. (1982) · The Lancet · doi:10.1016/s0140-6736(82)91270-3 · Cited by 178
Cannabis and neuroleptic agents in schizophrenia
Knudsen, P., & Vilmar, T. (1984) · Acta Psychiatrica Scandinavica · doi:10.1111/j.1600-0447.1984.tb02482.x · Cited by 140
Marijuana use in schizophrenia: a clear hazard
Treffert, D. A. (1978) · American Journal of Psychiatry · doi:10.1176/ajp.135.10.1213 · Cited by 139
WODAK, A. D. (1984) · The Medical Journal of Australia · doi:10.5694/j.1326-5377.1984.tb108436.x · Cited by 68
HARDING, T. W. (1973) · Archives of General Psychiatry · doi:10.1001/archpsyc.1973.04200050048008 · Cited by 67
Forty-Six Cases of Psychosis in Cannabis Abusers Gunila Bernhardson
Gunne, L. M. (1972) · International Journal of the Addictions · doi:10.3109/10826087209026757 · Cited by 66
The course of psychosis in early phases of schizophrenia
Harrow, M., Carone, B. J., & Westermeyer, J. F. (1985) · American Journal of Psychiatry · doi:10.1176/ajp.142.6.702 · Cited by 52
Psychosis Associated with Cannabis Smoking
Davison, K., & Wilson, C. (1972) · British Journal of Addiction to Alcohol & Other Drugs · doi:10.1111/j.1360-0443.1972.tb01198.x · Cited by 24
Zur Psychopathologie und Differentialdiagnose sogenannter Cannabispsychosen
Täschner, K.-L. (1983) · Fortschritte der Neurologie · Psychiatrie · doi:10.1055/s-2007-1002229 · Cited by 21
Tracking difficulties and paranoid ideation during hashish and alcohol intoxication
Melges, F. T. (1976) · American Journal of Psychiatry · doi:10.1176/ajp.133.9.1024 · Cited by 21
Cited by
Meta-analysis of the Association Between the Level of Cannabis Use and Risk of Psychosis
Marconi, A., Di Forti, M., Lewis, C. M., Murray, R. M., & Vassos, E. (2016) · Schizophrenia Bulletin · doi:10.1093/schbul/sbw003 · Cited by 899
Iversen, L. (2003) · Brain · doi:10.1093/brain/awg143 · Cited by 732
Cannabis Abuse and the Course of Recent-Onset Schizophrenic Disorders
Linszen, D. H. (1994) · Archives of General Psychiatry · doi:10.1001/archpsyc.1994.03950040017002 · Cited by 656
Medical Comorbidity in Schizophrenia
Jeste, D. V., Gladsjo, J. A., Lindamer, L. A., & Lacro, J. P. (1996) · Schizophrenia Bulletin · doi:10.1093/schbul/22.3.413 · Cited by 624
D’Souza, D. C., Abi-Saab, W. M., Madonick, S., Forselius-Bielen, K., Doersch, A., Braley, G., Gueorguieva, R., Cooper, T. B., & Krystal, J. H. (2005) · Biological Psychiatry · doi:10.1016/j.biopsych.2004.12.006 · Cited by 617
Metadata
- Authors
- Negrete, J. C., Knapp, W. P., Douglas, D. E., & Smith, W. B.
- Venue
- Psychological Medicine
- Publisher
- Cambridge University Press (CUP)
- Published
- 1986-08
- Volume
- 16
- Issue
- 3
- Pages
- 515-520
- ISSN
- 0033-2917 (ISSN-L)
- 1469-8978
- OpenAlex
- W2076018761
- Cited by
- 254
- References
- 11
- FWCI
- 3.68
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Cannabis affects the severity of schizophrenic symptoms: results of a clinical survey. https://app.cochat.ai/papers/10.1017/s0033291700010278
- The paper
- Negrete, J. C., Knapp, W. P., Douglas, D. E., & Smith, W. B. (1986). Cannabis affects the severity of schizophrenic symptoms: results of a clinical survey. Psychological Medicine. https://doi.org/10.1017/s0033291700010278
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.
