Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC.
Schroeder Institute for Tobacco Research and Policy Studies at Truth Initiative, Johns Hopkins Bloomberg School of Public Health, Georgetown University Medical Center, Lombardi Comprehensive Cancer Center, Washington, DC.
Nicotine Tob Res. 2018 Jul 9;20(8):931-939. doi: 10.1093/ntr/ntx166.
While cessation from cigarettes is a top priority for public health, controversy surrounds the role of e-cigarettes for quitting cigarettes. This study examines the role of e-cigarettes in quit attempts and 3-month cigarette abstinence using a large, recent nationally representative US sample.
Data from the 2014/15 Tobacco Use Supplement-Current Population Survey (TUS-CPS) on cigarette and e-cigarette use and individual characteristics were supplemented with information on state tobacco control policies. We estimated frequencies and multivariate logistic equations for making a quit attempt among those who smoked 1 year earlier and for remaining abstinent at least 3 months among those making a quit attempt. These two outcomes were related to demographic characteristics, tobacco control policies and different frequency measures of e-cigarette use (ever, at least 1, 5, 20 of the last 30 days, a continuous measure of days use).
Having made a quit attempt was more likely among smokers using e-cigarettes than non-users. Among those making at least one quit attempt, quit success was lower among ever users, but higher among those with at least 5 days use of e-cigarettes in the last month. Both quit attempts and quit success were linearly related to the frequency of e-cigarette use.
Consistent with randomized trials and those observational studies that measure frequency of e-cigarette use, both quit attempts and quit success were positively associated with increased frequency of e-cigarette use. Frequency of e-cigarette use was important in gauging the nature of these relationships.
Previous studies have obtained mixed results regarding the relationship of e-cigarette use to cigarette smoking cessation. This study provides a more precise methodology for considering the relationship of e-cigarette use to quit attempts and to quit success, and finds that quit attempts and quit success increase with the number of days use in the past month.
虽然戒烟是公共卫生的首要任务，但电子烟在戒烟方面的作用仍存在争议。本研究使用美国最近的一项大型全国代表性样本，考察了电子烟在戒烟尝试和 3 个月内戒烟方面的作用。
利用 2014/15 年烟草使用补充-当前人口调查（TUS-CPS）关于香烟和电子烟使用以及个人特征的数据，并补充了有关州烟草控制政策的信息。我们估计了在一年前吸烟的人群中尝试戒烟的频率以及在尝试戒烟的人群中至少 3 个月保持戒烟的频率，并使用多元逻辑方程进行分析。这两个结果与人口统计学特征、烟草控制政策以及电子烟使用的不同频率测量值（曾经、至少 1 次、过去 30 天内至少 5 次、过去 30 天内使用天数的连续测量值）有关。
使用电子烟的吸烟者比不使用者更有可能尝试戒烟。在至少尝试过一次戒烟的人群中，曾经使用者的戒烟成功率较低，但过去一个月至少使用 5 天电子烟的使用者的戒烟成功率较高。戒烟尝试和戒烟成功都与电子烟使用频率呈线性关系。
与随机试验和那些测量电子烟使用频率的观察性研究一致，戒烟尝试和戒烟成功都与电子烟使用频率的增加呈正相关。电子烟使用频率对于评估这些关系的性质非常重要。
以前的研究对于电子烟使用与戒烟之间的关系得出了混合的结果。本研究提供了一种更精确的方法来考虑电子烟使用与戒烟尝试和戒烟成功之间的关系，发现戒烟尝试和戒烟成功随着过去一个月使用天数的增加而增加。
