电子烟购买任务的初步开发：一项混合方法研究。
Initial Development of an E-cigarette Purchase Task: A Mixed Methods Study.
作者信息
Cassidy Rachel N, Tidey Jennifer W, Colby Suzanne M, Long Victoria, Higgins Stephen T
机构信息
Center for Alcohol & Addiction Studies, Brown University, Providence, RI.
University of Vermont Tobacco Center of Regulatory Science, Burlington, VT.
出版信息
Tob Regul Sci. 2017 Apr;3(2):139-150. doi: 10.18001/TRS.3.2.2.
OBJECTIVES
Behavioral economic purchase tasks, which estimate demand for drugs, have been successfully developed for cigarettes and are widely used. However, a validated purchase task does not yet exist for e-cigarettes. The aim of this project was to identify the relevant units for an e-cigarette purchase task (E-CPT).
METHODS
Focus groups (N=28 participants in 7 groups, 2-7 participants per group) consisting of current e-cigarette users were conducted. Participants discussed their daily use patterns, completed a preliminary E-CPT which asked how many puffs of their e-cigarette they would consume per day at escalating prices, and discussed the extent to which the task accurately reflected their real-world behavior. Groups were recorded and transcribed; analysis focused on statements related to daily consumption and the E-CPT.
RESULTS
Participants were unlikely to quantify their daily use in terms of puffs, and perceptions about the appropriate unit for an E-CPT varied across device type. Users of first-generation devices (eg, cigalikes) reported that the relevant unit was the individual device/cartridge; however, participants who purchased nicotine liquid for their device emphasized that e-liquid volume in milliliters would better reflect their use.
CONCLUSIONS
Multiple versions of the E-CPT may be necessary to provide valid measures of e-cigarette demand.
目的
行为经济学购买任务可用于估计对毒品的需求，已成功应用于香烟领域并被广泛使用。然而，目前尚未有经过验证的电子烟购买任务。本项目的目的是确定电子烟购买任务（E-CPT）的相关单位。
方法
对由当前电子烟使用者组成的焦点小组（共7组，28名参与者，每组2至7名参与者）进行了研究。参与者讨论了他们的日常使用模式，完成了一项初步的E-CPT，该任务询问他们在价格不断上涨的情况下每天会吸食多少口电子烟，并讨论了该任务在多大程度上准确反映了他们的实际行为。对小组讨论进行了录音和转录；分析重点关注与每日消费量和E-CPT相关的陈述。
结果
参与者不太可能用口数来量化他们的日常使用量，而且对于E-CPT合适单位的看法因设备类型而异。第一代设备（如雪茄型电子烟）的使用者报告说，相关单位是单个设备/烟弹；然而，为其设备购买尼古丁液的参与者强调，以毫升为单位的电子烟液体积能更好地反映他们的使用情况。
结论
可能需要多个版本的E-CPT来有效衡量电子烟需求。
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