Evidence map›Paper›PMID 33394560›Full record

ArticleAddiction (Abingdon, England)2021

For better or for worse? A pre-post exploration of the impact of the COVID-19 lockdown on cannabis users.

Janna Cousijn, Lauren Kuhns, Helle Larsen, Emese Kroon

Abstract read
In one paragraph

Article in Addiction (Abingdon, England), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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

35 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  13. Substances of abuse and their effect on SAR-CoV-2 pathogenesis.NeuroImmune pharmacology and therapeutics · 2023
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Janna CousijnNeuroscience of Addiction (NofA) Laboratory, Department of Psychology, University of Amsterdam, Amsterdam, the Netherlands.ORCID 0000-0002-7699-2582
Lauren KuhnsNeuroscience of Addiction (NofA) Laboratory, Department of Psychology, University of Amsterdam, Amsterdam, the Netherlands.
Helle LarsenADAPT-laboratory, Department of Psychology, University of Amsterdam, the Netherlands.ORCID 0000-0003-0117-9252
Emese KroonNeuroscience of Addiction (NofA) Laboratory, Department of Psychology, University of Amsterdam, Amsterdam, the Netherlands.

Funding

The Role of Motivation and Control in Cannabis Use Disorders: A Cross-Cultural Longitudinal Neuroimaging StudyR01DA042490 · NIDA · UNIVERSITY OF TEXAS DALLAS · PI COUSIJN, JANNA, FILBEY, FRANCESCA · 2017 to 2021
$2.6M
NIDA NIH HHS 1R01 DA042490-01A1 awarded to J.C.NIDA NIH HHS R01 DA042490
6 · The paper itself

Abstract

BACKGROUND AND

aimsLockdown measures aimed at limiting the number of infections and deaths from the coronavirus disease 2019 (COVID-19) have introduced substantial psychosocial stressors in everyday life. We aimed to investigate the influence of the Dutch lockdown on cannabis use and cannabis use disorder (CUD) and investigate relations with change in mental wellbeing and experienced psychosocial stressors during the lockdown.

designExplorative longitudinal baseline-, pre- and during lockdown survey study.

settingThe Netherlands, on-line between January 2019 and May 2020.

participantsCommunity sample of 120 monthly to daily cannabis users and reference group of 63 non-using controls. MEASUREMENTS: Change in cannabis use and CUD symptom severity from baseline to pre- to post-lockdown. Change in cannabis use motives, mental health, quality of social relationships and job status from pre- to post-lockdown.

findingsIn cannabis users, lockdown related to increased cannabis use [B = 1.96, 95% confidence interval (CI) = 0.26-3.66, P = 0.024], but not CUD symptom severity. Cannabis users experienced 30% job loss and increased loneliness [P < 0.001, Bayes factor (BF)

conclusionsWhile cannabis use among daily cannabis users in the Netherlands increased at the group level during the period of COVID-19 lockdown, the effect of the first months of lockdown on cannabis use disorder severity and mental wellbeing varied significantly among individual daily cannabis users.

Indexed as

Physical DistancingAdolescentAdultCOVID-19FemaleHumansLongitudinal StudiesMaleMarijuana AbuseMiddle AgedNetherlandsQuarantineSARS-CoV-2Young AdultCannabiscannabis use disordercannabis use motivesCOVID-19mental healthsocial relationships

Identifiers

PMID33394560
PMCPMC8254730

What OpenQuestion holds

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Registered trials

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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.