Evidence map›Paper›PMID 31625495›Full record

ArticleBJPsych open2019

The association between health conditions and cannabis use in patients with opioid use disorder receiving methadone maintenance treatment.

Ieta Shams, Nitika Sanger, Meha Bhatt, Tea Rosic, Candice Luo, Hamnah Shahid, Natalia Mouravska, Sabrina Lue Tam, Alannah Hillmer, Caroul Chawar and 5 more

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BJPsych open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 15% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors at 8 institutions in 2 countries.

Ieta ShamsMedical student, Department of Psychiatry and Behavioural Neurosciences, McMaster University; and Faculty of Medicine, University of Ottawa, Canada.ORCID https://orcid.org/0000-0002-2263-0025
Nitika SangerPhD student, Department of Psychiatry and Behavioural Neurosciences, McMaster University, Canada.
Meha BhattResearcher, Department of Psychiatry and Behavioural Neurosciences, McMaster University; and Department of Health Research Methods, Evidence, and Impact, McMaster University, Canada.
Tea RosicPsychiatry Resident, Department of Psychiatry and Behavioural Neurosciences, McMaster University, Canada.ORCID https://orcid.org/0000-0001-7406-4056
Candice LuoMedical Student, Department of Psychiatry and Behavioural Neurosciences, McMaster University, Canada.
Hamnah ShahidPsychology Graduate Program Student, Department of Psychiatry and Behavioural Neurosciences, McMaster University, Canada.
Natalia MouravskaPsychiatry Resident, Department of Psychiatry, The Ottawa Hospital General Campus, Canada.
Sabrina Lue TamResident, HHS McMaster Children's Hospital, McMaster University, Canada.
Alannah HillmerGraduate student, Neuroscience Graduate Program, McMaster University, Canada.
Caroul ChawarGraduate student, Neuroscience Graduate Program, McMaster University, Canada.
Alessia D'EliaGraduate student, Neuroscience Graduate Program, McMaster University, Canada.
Jacqueline HudsonResearch Assistant, Department of Psychiatry and Behavioural Neurosciences, McMaster University, Canada.
David MarshAddiction Medicine Specialist, Northern Ontario School of Medicine, Laurentian University; and Researcher, Canadian Addiction Treatment Centres, Canada.
Lehana ThabaneProfessor, Department of Health Research Methods, Evidence, and Impact, McMaster University; Father Sean O'Sullivan Research Centre, St. Joseph's Healthcare Hamilton; and Researcher, Centre for Evaluation of Medicines, Programs for Assessment of Technology in Health (PATH) Research Institute, McMaster University, Canada.
Zainab SamaanAssociate Professor, Department of Psychiatry and Behavioural Neurosciences, McMaster University; Psychiatrist, Department of Health Research Methods, Evidence, and Impact, McMaster University; and Researcher, Population Genomics Program, Chanchlani Research Centre, McMaster University, Canada.
McMaster University · CACentre for Addiction and Mental Health · CAImpact · CAMcMaster Children's Hospital · CAOttawa Hospital · CAPopulation Health Research Institute · CAPrograms for Assessment of Technology in Health Research Institute · CAUniversity of Ottawa · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCannabis is the most commonly used substance among patients in methadone maintenance treatment (MMT) for opioid use disorder. Current treatment programmes neither screen nor manage cannabis use. The recent legalisation of cannabis in Canada incites consideration into how this may affect the current opioid crisis.

aimsInvestigate the health status of cannabis users in MMT.

methodPatients were recruited from addiction clinics in Ontario, Canada. Regression analyses were used to assess the association between adverse health conditions and cannabis use. Further analyses were used to assess sex differences and heaviness of cannabis use.

resultsWe included 672 patients (49.9% cannabis users). Cannabis users were more likely to consume alcohol (odds ratio 1.46, 95% CI 1.04-2.06, P = 0.029) and have anxiety disorders (odds ratio 1.75, 95% CI 1.02-3.02, P = 0.043), but were less likely to use heroin (odds ratio 0.45, 95% CI 0.24-0.86, P = 0.016). There was no association between cannabis use and pain (odds ratio 0.98, 95% CI 0.94-1.03, P = 0.463). A significant association was seen between alcohol and cannabis use in women (odds ratio 1.79, 95% CI 1.06-3.02, P = 0.028), and anxiety disorders and cannabis use in men (odds ratio 2.59, 95% CI 1.21-5.53, P = 0.014). Heaviness of cannabis use was not associated with health outcomes.

conclusionsOur results suggest that cannabis use is common and associated with psychiatric comorbidities and substance use among patients in MMT, advocating for screening of cannabis use in this population. DECLARATION OF INTEREST: None.

Indexed as

cannabisDrugs of dependence disordersopioid use disorder

Identifiers

PMID31625495
PMCPMC6854359
OpenAlexW2980421489

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.