Evidence map›Paper›PMID 33526441›Full record

ArticleTobacco control2021

Indicators of dependence and efforts to quit vaping and smoking among youth in Canada, England and the USA.

David Hammond, Jessica L Reid, Vicki L Rynard, Richard J O'Connor, Maciej L Goniewicz, Megan E Piper, Maansi Bansal-Travers

Abstract read
In one paragraph

Article in Tobacco control, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 2 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

28 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. What is the Addictive Potential from Vaping?Nordisk alkohol- & narkotikatidskrift : NAT · 2026
    Article
  5. Article
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  7. Understanding Reasons to Quit or Reduce Vaping and Associations With Quitting Outcomes Among High School Adolescents in Connecticut.The Journal of adolescent health : official publication of the Society for Adolescent Medicine · 2025
    Article
  8. Article
  9. Social Media Engagement and Quit Intentions Among Youth With Exclusive E-cigarette Use: The Moderating Role of Social Norms.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2025
    Article
  10. Vaping-Specific Nicotine Dependence Across Days Among a National Sample of US Young Adults Who Vape.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2025
    Article
  11. Article
  12. Associations of Close Social Connections With Smoking and Vaping: A Population Study in England.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2025
    Article
  13. Comparison of Indicators of Dependence for Vaping and Smoking: Trends Between 2017 and 2022 Among Youth in Canada, England, and the United States.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2024
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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

7 authors.

David HammondSchool of Public Health & Health Systems, University of Waterloo, Waterloo, Ontario, Canada dhammond@uwaterloo.ca.
Jessica L ReidSchool of Public Health & Health Systems, University of Waterloo, Waterloo, Ontario, Canada.ORCID http://orcid.org/0000-0001-9909-6265
Vicki L RynardSchool of Public Health & Health Systems, University of Waterloo, Waterloo, Ontario, Canada.
Richard J O'ConnorDepartment of Health Behavior, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA.
Maciej L GoniewiczDepartment of Health Behavior, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA.ORCID http://orcid.org/0000-0001-6748-3068
Megan E PiperCenter for Tobacco Research and Intervention, School of Medicine and Public Health, University of Wisconsin Madison, Madison, Wisconsin, USA.
Maansi Bansal-TraversDepartment of Health Behavior, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA.

Funding

Vaporized Nicotine Product Initiation Among Youth in the US, Canada, and England: Methods to Predict Uptake and Policy EfficacyP01CA200512 · NCI · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI FONG, GEOFFREY T · 2016 to 2025
$25.3M
NCI NIH HHS P01 CA200512
6 · The paper itself

Abstract

objectiveThe current study examined indicators of dependence among youth cigarette smokers and e-cigarette users in Canada, England and the USA, including changes between 2017 and 2019.

methodsData are from repeated cross-sectional online surveys conducted in 2017, 2018 and 2019 with national samples of youth aged 16-19 years, in Canada (n=12 018), England (n=11 362) and the USA (n=12 110). Measures included perceived addiction to cigarettes/e-cigarettes, frequency of experiencing strong urges to smoke/use an e-cigarette, plans to quit smoking/using e-cigarettes and past attempts to quit. Logistic regression models were fitted to examine differences between countries and changes over time.

resultsThe proportion of ever-users who vaped frequently was significantly higher in 2019 compared with 2017 for all outcomes in each country. Between 2017 and 2019, the proportion of past 30-day vapers reporting strong urges to vape on most days or more often increased in each country (Canada: 35.3%, adjusted OR (AOR) 1.69, 95% CI 1.20 to 2.38; England: 32.8%, AOR 1.55, 1.08 to 2.23; USA: 46.1%, AOR 1.88, 1.41 to 2.50), along with perceptions of being 'a little' or 'very addicted' to e-cigarettes (Canada: 48.3%, AOR 1.99, 1.44 to 2.75; England: 40.1%, AOR 1.44, 1.03 to 2.01; USA: 53.1%, AOR 1.99, 1.50 to 2.63). Indicators of dependence among smokers were consistently greater than e-cigarette users, although differences had narrowed by 2019, particularly in Canada and the USA.

conclusionsPrevalence of dependence symptoms among young e-cigarette users increased between 2017 and 2019, more so in Canada and the USA compared with England. Dependence symptom prevalence was lower for e-cigarettes than smoking; however, the gap has narrowed over time.

Indexed as

addictioncessationelectronic nicotine delivery devicespriority/special populationssurveillance and monitoring

Identifiers

PMID33526441
PMCPMC8325708

What OpenQuestion holds

Textmetadata
LicenceTDM
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.