How to define e-cigarette prevalence? Finding clues in the use frequency distribution.
How to define e-cigarette prevalence? Finding clues in the use frequency distribution.
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DOI：
10.1136/tobaccocontrol-2015-052236
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发表时间：
2016-04
期刊：
影响因子：
5.2
通讯作者：
Levy D
中科院分区：
文献类型：
--
作者：
Amato MS;Boyle RG;Levy D
电子烟的使用迅速增加。最近的研究使用各种措施来定义患病率；相互竞争的定义挑战了跨研究比较。我们试图通过调查过去30天中成年人使用电子烟的天数来了解使用模式。我们使用了2014年明尼苏达州成人烟草调查，这是一项随机数字拨号人口调查（n=9304名成年人）。问题包括是否吸过电子烟、过去30天内吸了多少天以及吸电子烟的原因。吸烟状况由可燃香烟的使用情况来确定。在使用电子烟30天的情况下，对当前吸烟者、曾经吸烟者和从未吸烟者的电子烟使用直方图进行了目测检查。比较了当前使用的不同定义。在过去30天内使用≤5天的用户在分布的低端划分为不经常使用的用户群。在过去30天内使用过的人中，不经常使用者占大多数（59%）和从不吸烟者（89.5%），但不到一半的前吸烟者（43.2%）。不经常吸烟的人更有可能以好奇心为理由，而不太可能以戒烟/减少其他烟草使用为理由。将成人流行率定义为过去30天内的任何使用可能包括不太可能继续使用的实验人员，并且对于长期公共卫生趋势的人口监测的效用值得怀疑。将流行率定义为bb50天不包括那些不经常使用的用户。
E-cigarette use has rapidly increased. Recent studies define prevalence using a variety of measures; competing definitions challenge cross-study comparison. We sought to understand patterns of use by investigating the number of days out of the past 30 days when adults had used e-cigarettes. We used the 2014 Minnesota Adult Tobacco Survey, a random digit dial population survey (n=9304 adults). Questions included ever using e-cigarettes, number of days used in the past 30 days and reasons for use. Smoking status was determined by combustible cigarette use. Histograms of e-cigarette use were visually inspected for current, former and never smokers with any 30-day e-cigarette use. Different definitions of current use were compared. Use ≤5 days in the past 30 days demarcated a cluster of infrequent users at the low end of the distribution. Among those with use in the past 30 days, infrequent users were the majorities of current (59%) and never smokers (89.5%), but fewer than half of former smokers (43.2%). Infrequent users were more likely to cite curiosity and less likely to cite quitting/cutting down other tobacco use as reasons for use. Defining adult prevalence as any use in the past 30 days may include experimenters unlikely to continue use, and is of questionable utility for population surveillance of public health trends over time. Defining prevalence as >5 days excludes those infrequent users.