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Methods in Addiction Research

Discordant report of vaping of cannabis among high school seniors in the United States

ORCID Icon &
Pages 148-157 | Received 02 Mar 2021, Accepted 07 Jun 2021, Published online: 15 Jul 2021
 

ABSTRACT

Introduction: Reliable responses on surveys are important to ensure accurate estimates of drug use. This study compared prevalence of self-reported vaping of cannabis based on two separate questions on the same survey.

Methods: We examined combined data from the 2017–2019 Monitoring the Future nationally representative survey of high school seniors in the US (N = 6,982). Students were first asked whether they had used cannabis in the past year via vaporizer in a section about cannabis use. Later on, students were asked about vaping behaviors, including cannabis vaping. Prevalence of self-reported vaping of cannabis was compared and a multivariable model delineated correlates of providing a discordant response – defined as reporting vaporizer use but not reporting vaping.

Results: Estimated prevalence of use based on the question in the cannabis section was 11.9% (95% CI: 11.0–12.9) and prevalence based on the question in the vaping section was 13.2% (95% CI: 12.3–14.2). Among those reporting vaping of cannabis, 17.3% provided a discordant response. The corrected prevalence was 16.5% (95% CI: 15.5–17.6). Black students were more likely to provide a discordant report (aPR = 1.82, 95% CI: 1.23–2.69) and those reporting past-year vaping of nicotine (aPR = 0.27, 95% CI: 0.19–0.38) and/or nonmedical use of prescription stimulants (aPR = 0.44, 95% CI: 0.21–0.91) were less likely to provide a discordant report.

Conclusions: Self-report of vaping of cannabis varies depending on whether it is asked in a section about vaping practices or about overall cannabis use (use via vaporizer). Survey researchers need to consider how to best query cannabis vaping practices on surveys.

Supplemental data

Supplemental data for this article can be accessed on the publisher’s website

Acknowledgements

Research reported in this publication was supported by the National Institute on Drug Abuse of the National Institutes of Health under Award Number R01DA044207 (PI: Palamar). The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. The authors would like to thank the principal investigators (PIs: Miech, Johnston, Bachman, O’Malley, and Schulenberg) at The University of Michigan, Institute for Social Research, Survey Research Center, and the Inter-university Consortium for Political and Social Research for providing public access to these data.

Disclosure statement

The author declares no conflict of interest.

Additional information

Funding

This work was supported by the National Institute on Drug Abuse [R01DA044207].

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