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Associations of cannabis use, tobacco use, and incident anxiety, mood, and psychotic disorders: a systematic review and meta-analysis.

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Title: Associations of cannabis use, tobacco use, and incident anxiety, mood, and psychotic disorders: a systematic review and meta-analysis.
Authors: Burke, Chloe (AUTHOR), Freeman, Tom P. (AUTHOR), Sallis, Hannah (AUTHOR), Wootton, Robyn E. (AUTHOR), Burnley, Annabel (AUTHOR), Lange, Jonas (AUTHOR), Lees, Rachel (AUTHOR), Sawyer, Katherine (AUTHOR), Taylor, Gemma M. J. (AUTHOR)
Source: Psychological Medicine. Nov2024, Vol. 54 Issue 15, p1-15. 15p.
Subjects: Mental illness risk factors, Risk assessment, Medical information storage & retrieval systems, Research funding, Smoking, CINAHL database, Affective disorders, Meta-analysis, Descriptive statistics, Systematic reviews, MEDLINE, Psychoses, Anxiety disorders, Cannabis (Genus), Quality assurance, Psychology information storage & retrieval systems, Disease incidence
Geographic Terms: United Kingdom
Abstract: Background Observational studies consistently report associations between tobacco use, cannabis use and mental illness. However, the extent to which this association reflects an increased risk of new-onset mental illness is unclear and may be biased by unmeasured confounding. Methods A systematic review and meta-analysis (CRD42021243903). Electronic databases were searched until November 2022. Longitudinal studies in general population samples assessing tobacco and/or cannabis use and reporting the association (e.g. risk ratio [RR]) with incident anxiety, mood, or psychotic disorders were included. Estimates were combined using random-effects meta-analyses. Bias was explored using a modified Newcastle–Ottawa Scale, confounder matrix, E -values, and Doi plots. Results Seventy-five studies were included. Tobacco use was associated with mood disorders (K = 43; RR: 1.39, 95% confidence interval [CI] 1.30–1.47), but not anxiety disorders (K = 7; RR: 1.21, 95% CI 0.87–1.68) and evidence for psychotic disorders was influenced by treatment of outliers (K = 4, RR: 3.45, 95% CI 2.63–4.53; K = 5, RR: 2.06, 95% CI 0.98–4.29). Cannabis use was associated with psychotic disorders (K = 4; RR: 3.19, 95% CI 2.07–4.90), but not mood (K = 7; RR: 1.31, 95% CI 0.92–1.86) or anxiety disorders (K = 7; RR: 1.10, 95% CI 0.99–1.22). Confounder matrices and E -values suggested potential overestimation of effects. Only 27% of studies were rated as high quality. Conclusions Both substances were associated with psychotic disorders and tobacco use was associated with mood disorders. There was no clear evidence of an association between cannabis use and mood or anxiety disorders. Limited high-quality studies underscore the need for future research using robust causal inference approaches (e.g. evidence triangulation). [ABSTRACT FROM AUTHOR]
Copyright of Psychological Medicine is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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PubType: Academic Journal
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  Data: Associations of cannabis use, tobacco use, and incident anxiety, mood, and psychotic disorders: a systematic review and meta-analysis.
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  Data: <searchLink fieldCode="AR" term="%22Burke%2C+Chloe%22">Burke, Chloe</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Freeman%2C+Tom+P%2E%22">Freeman, Tom P.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sallis%2C+Hannah%22">Sallis, Hannah</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wootton%2C+Robyn+E%2E%22">Wootton, Robyn E.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Burnley%2C+Annabel%22">Burnley, Annabel</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lange%2C+Jonas%22">Lange, Jonas</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lees%2C+Rachel%22">Lees, Rachel</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sawyer%2C+Katherine%22">Sawyer, Katherine</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Taylor%2C+Gemma+M%2E+J%2E%22">Taylor, Gemma M. J.</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Psychological+Medicine%22">Psychological Medicine</searchLink>. Nov2024, Vol. 54 Issue 15, p1-15. 15p.
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  Data: <searchLink fieldCode="DE" term="%22United+Kingdom%22">United Kingdom</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Background Observational studies consistently report associations between tobacco use, cannabis use and mental illness. However, the extent to which this association reflects an increased risk of new-onset mental illness is unclear and may be biased by unmeasured confounding. Methods A systematic review and meta-analysis (CRD42021243903). Electronic databases were searched until November 2022. Longitudinal studies in general population samples assessing tobacco and/or cannabis use and reporting the association (e.g. risk ratio [RR]) with incident anxiety, mood, or psychotic disorders were included. Estimates were combined using random-effects meta-analyses. Bias was explored using a modified Newcastle–Ottawa Scale, confounder matrix, E -values, and Doi plots. Results Seventy-five studies were included. Tobacco use was associated with mood disorders (K = 43; RR: 1.39, 95% confidence interval [CI] 1.30–1.47), but not anxiety disorders (K = 7; RR: 1.21, 95% CI 0.87–1.68) and evidence for psychotic disorders was influenced by treatment of outliers (K = 4, RR: 3.45, 95% CI 2.63–4.53; K = 5, RR: 2.06, 95% CI 0.98–4.29). Cannabis use was associated with psychotic disorders (K = 4; RR: 3.19, 95% CI 2.07–4.90), but not mood (K = 7; RR: 1.31, 95% CI 0.92–1.86) or anxiety disorders (K = 7; RR: 1.10, 95% CI 0.99–1.22). Confounder matrices and E -values suggested potential overestimation of effects. Only 27% of studies were rated as high quality. Conclusions Both substances were associated with psychotic disorders and tobacco use was associated with mood disorders. There was no clear evidence of an association between cannabis use and mood or anxiety disorders. Limited high-quality studies underscore the need for future research using robust causal inference approaches (e.g. evidence triangulation). [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Psychological Medicine is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=182283792
RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1017/S0033291724002587
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      – Code: eng
        Text: English
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    Subjects:
      – SubjectFull: Mental illness risk factors
        Type: general
      – SubjectFull: Risk assessment
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      – SubjectFull: Medical information storage & retrieval systems
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      – SubjectFull: Research funding
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      – SubjectFull: Smoking
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      – SubjectFull: CINAHL database
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      – SubjectFull: Affective disorders
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      – SubjectFull: Meta-analysis
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      – SubjectFull: Descriptive statistics
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      – SubjectFull: Systematic reviews
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      – SubjectFull: MEDLINE
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      – SubjectFull: Psychoses
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      – SubjectFull: Cannabis (Genus)
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      – SubjectFull: Psychology information storage & retrieval systems
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      – SubjectFull: Disease incidence
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      – SubjectFull: United Kingdom
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              Text: Nov2024
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