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  • Flavoured tobacco product restrictions in Massachusetts associated with reductions in adolescent cigarette and e-cigarette use

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Flavoured tobacco product restrictions in Massachusetts associated with reductions in adolescent cigarette and e-cigarette use
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  • Published on: 27 April 2022
    Methods question / comment on the discussion

    ¶ I enjoyed reading this paper. I appreciate the author's use of difference-in-difference (DD) methodology. There were some things I found unclear that I would like to ask the authors to comment on.

    ¶ First, could the authors provide greater clarity on the model for column 1 of Table 1? Is the dependent variable here a yes/no for current cigarette use? The authors write, "Adolescents reported lifetime and prior month use of cigarettes, which we combined into a count variable of days smoked in the past month (0–30)." How does lifetime cigarette use help the authors to code the current number of cigarette days? The authors later state that they show that "increasing implementation of flavoured tobacco product restrictions was associated not with a reduction in the likelihood of cigarette use, but with a decrease in the level of cigarette use among users." Do the authors mean lifetime cigarette use here, or current cigarette use? The authors estimate this equation with an "inflation model," which I am not aware of. Could the authors provide more information on this modelling technique? This is not discussed in the "Analysis" section.

    ¶ Second, I felt like this statement is too strong. "Our findings suggest that[...] municipalities should enact stricter tobacco-control policies when not pre-empted by state law." Municipalities need to weigh many factors in making these decisions, including the effects of popu...

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    Conflict of Interest:
    I have never received tobacco industry funding. Over the last 10 years I have received funding from National Institutes of Health, American Cancer Society, Centers for Disease Control and Prevention, World Health Organization, Agency for Healthcare Research and Quality, Virginia Foundation for Healthy Youth, and the University of Kentucky’s Institute for the Study of Free Enterprise