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Yingst J, Foulds J, Veldheer S, et al. Measurement of Electronic Cigarette Frequency of Use Among Smokers Participating in a Randomized Controlled Trial. Nicotine Tob Res. 2020;22(5):699-704doi: 10.1093/ntr/nty233.
Yingst, J., Foulds, J., Veldheer, S., Cobb, C. O., Yen, M. S., Hrabovsky, S., Allen, S. I., Bullen, C., & Eissenberg, T. (2020). Measurement of Electronic Cigarette Frequency of Use Among Smokers Participating in a Randomized Controlled Trial. Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco, 22(5), 699-704. https://doi.org/10.1093/ntr/nty233
Yingst, Jessica, et al. "Measurement of Electronic Cigarette Frequency of Use Among Smokers Participating in a Randomized Controlled Trial." Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco vol. 22,5 (2020): 699-704. doi: https://doi.org/10.1093/ntr/nty233
Yingst J, Foulds J, Veldheer S, Cobb CO, Yen MS, Hrabovsky S, Allen SI, Bullen C, Eissenberg T. Measurement of Electronic Cigarette Frequency of Use Among Smokers Participating in a Randomized Controlled Trial. Nicotine Tob Res. 2020 Apr 21;22(5):699-704. doi: 10.1093/ntr/nty233. PMID: 30365024; PMCID: PMC7171268.
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Nicotine Tob Res. 2020 Apr 21;22(5):699-704. doi: 10.1093/ntr/nty233.

Measurement of Electronic Cigarette Frequency of Use Among Smokers Participating in a Randomized Controlled Trial.

Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco

Jessica Yingst, Jonathan Foulds, Susan Veldheer, Caroline O Cobb, Miao-Shan Yen, Shari Hrabovsky, Sophia I Allen, Christopher Bullen, Thomas Eissenberg

Affiliations

  1. Penn State Tobacco Center of Regulatory Science, Pennsylvania State University, Hershey, PA.
  2. Department of Psychology, Virginia Commonwealth University, Richmond, VA.
  3. Center for the Study of Tobacco Products, Virginia Commonwealth University, Richmond, VA.
  4. Department of Biostatistics, Virginia Commonwealth University, Richmond, VA.
  5. University of Auckland, Auckland, New Zealand.

PMID: 30365024 PMCID: PMC7171268 DOI: 10.1093/ntr/nty233

Abstract

BACKGROUND: The United States Food and Drug Administration has prioritized understanding the dependence potential of electronic cigarettes (e-cigs). Dependence is often estimated in part by examining frequency of use; however measures of e-cig use are not well developed because of varying product types. This study used an e-cig automatic puff counter to evaluate the value of self-reported e-cig use measures in predicting actual use (puffs).

METHODS: Data were collected from a two-site randomized placebo-controlled trial evaluating the effects of e-cigs on toxicant exposure in smokers attempting to reduce their cigarette consumption. Participants randomized to an e-cig condition self-reported their e-cig frequency of use (times per day-one "time" consists of around 15 puffs or lasts around 10 minutes) on the Penn State Electronic Cigarette Dependence Index (PSECDI) and kept daily diary records of the number of puffs per day from the e-cig automatic puff counter. A linear mixed-effects model was used to determine the predictive value of the times per day measure. Correlations were used to further investigate the relationship.

RESULTS: A total of 259 participants with 1165 observations of e-cig use were analyzed. Self-reported e-cig use in times per day was a significant predictor of e-cig puffs per day (p < .01). The Spearman correlation between measures was r equal to .58. Examination of individual participant responses revealed some potential difficulties reporting and interpreting times per day because of the difference in use patterns between cigarettes and e-cigs.

CONCLUSION: This study provides evidence that the self-reported PSECDI measure of times per day is a significant predictor of actual frequency of e-cig puffs taken.

IMPLICATIONS: Self-reported measures of e-cig frequency of use are predictive of actual use, but quantifying e-cig use in patterns similar to cigarettes is problematic.

© The Author(s) 2018. Published by Oxford University Press on behalf of the Society for Research on Nicotine and Tobacco. All rights reserved. For permissions, please e-mail: [email protected].

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