Type

Journal Article

Authors

Mogens Nygaard Christoffersen
Ask Elklit
Frédérique Vallières
Philip Hyland
Jamie Murphy
Eoin McElroy
Mark Shevlin

Subjects

Psychiatry

Topics
young people polydrug use odds ratio logistic regression analysis mental health health status cannabis use design methodology psychology

Cannabis and psychosis: the impact of polydrug use (2017)

Abstract Purpose While research has consistently identified an association between cannabis use and psychosis, few studies have examined this relationship in a polydrug context (i.e. combining cannabis with other illicit substances). Design/methodology/approach The present study sought to examine the association between recreational drug use (cannabis only v. polydrug) and psychotic disorders. Analysis was conducted on a large, representative survey of young Danish people aged 24 (N = 4,718). Participants completed self-report measures of lifetime drug use and this information was linked to the Danish psychiatric registry system. Findings Multivariate binary logistic regression analysis was used to examine the association between drug use (no drug use, cannabis only, cannabis and other drug) and ICD-10 psychotic disorders, while controlling for gender and parental history of psychosis. Compared with no drug use, the use of cannabis only did not increase the risk of psychosis while the odds ratio for cannabis and other drug were statistically significant. Research limitations/implications Psychosis risk may be associated with the cumulative effect of polydrug use. Practical implications Cannabis use may be a proxy for other drug use in research studies. Originality/value This study is innovative as it uses linked self-report and administrative data for a large sample. Administrative data was used to as an objective mental health status indicator.
Collections Ireland -> National College Ireland -> Status = Published
Ireland -> National College Ireland -> Subject = B Philosophy. Psychology. Religion
Ireland -> National College of Ireland -> Type = Article
Ireland -> National College Ireland -> Subject = B Philosophy. Psychology. Religion: Psychology
Ireland -> Maynooth University -> Status = Published
Ireland -> Maynooth University -> Open Access DRIVERset
Ireland -> Maynooth University -> Academic Unit = Faculty of Science and Engineering: Psychology
Ireland -> Maynooth University -> Type = Article
Ireland -> Maynooth University -> Academic Unit = Faculty of Science and Engineering
Ireland -> National College of Ireland -> Subject = B Philosophy. Psychology. Religion: Psychology
Ireland -> National College Ireland -> Type = Article
Ireland -> National College of Ireland -> Status = In Press

Full list of authors on original publication

Mogens Nygaard Christoffersen, Ask Elklit, Frédérique Vallières, Philip Hyland, Jamie Murphy, Eoin McElroy, Mark Shevlin

Experts in our system

1
Mogens Nygaard Christoffersen
National College Ireland
Total Publications: 13
 
2
Ask Elklit
National College of Ireland
Total Publications: 46
 
3
Frédérique Vallières
National College Ireland
Total Publications: 46
 
4
Philip Hyland
National College of Ireland
Total Publications: 231
 
5
Jamie Murphy
National College of Ireland
Total Publications: 43
 
6
Eoin McElroy
National College of Ireland
Total Publications: 10
 
7
Mark Shevlin
National College of Ireland
Total Publications: 125