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NAQC Newsroom: Research

Impact of E-Cigarette Minimum Legal Sale Age Laws on Current Cigarette Smoking.

Thursday, February 8, 2018  
Posted by: Natalia Gromov
Lauren M. Dutra, Stanton A. Glantz, René A. Arrazola, and Brian A. King.
Impact of E-Cigarette Minimum Legal Sale Age Laws on Current Cigarette Smoking.
Journal of Adolescent Health. 2017. Article in Press.
The purpose of this study was to use individual-level data to examine the relationship between e-cigarette minimum legal sale age (MLSA) laws and cigarette smoking among U.S. adolescents, adjusting for e-cigarette use. In 2016 and 2017, we regressed logistic) current (past 30-day) cigarette smoking (from 2009–2014 National Youth Tobacco Surveys [NYTS]) on lagged (laws enacted each year counted for the following year) and unlagged (laws enacted January–June counted for that year) state e-cigarette MLSA laws prohibiting sales to youth aged <18 or <19 years (depending on the state). Models were adjusted for year and individual- (e-cigarette and other tobacco use, sex, race/ethnicity, and age) and state-level (smoke-free laws, cigarette taxes, medical marijuana legalization, income, and unemployment) covariates. Cigarette smoking was not significantly associated with lagged MLSA laws after adjusting for year (odds ratio [OR] = .87, 95% confidence interval [CI]: .73–1.03; p = .10) and covariates (OR = .85, .69–1.03; p = .10). Unlagged laws were significantly and negatively associated with cigarette smoking (OR = .84, .71–.98, p = .02), but not after adjusting for covariates (OR = .84, .70–1.01, p = .07). E-cigarette and other tobacco use, sex, race/ethnicity, age, and smoke-free laws were associated with cigarette smoking (p < .05). Results unadjusted for e-cigarette use and other tobacco use yielded a significant negative association between e-cigarette MLSA laws and cigarette smoking (lagged: OR = .78, .64–.93, p = .01; unlagged: OR = .80, .68–.95, p = .01). After adjusting for covariates, state e-cigarette MLSA laws did not affect youth cigarette smoking. Unadjusted for e-cigarette and other tobacco use, these laws were associated with lower cigarette smoking.

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