Department of Population and Public Health Sciences, Institute for Addiction Science, University of Southern California Keck School of Medicine, Los Angeles, California.
Department of Population and Public Health Sciences, Institute for Addiction Science, University of Southern California Keck School of Medicine, Los Angeles, California.
J Adolesc Health. 2023 Feb;72(2):260-266. doi: 10.1016/j.jadohealth.2022.09.018. Epub 2022 Nov 18.
Despite laws prohibiting sale of e-cigarettes to individuals aged less than 21 years, many underage young adults purchase e-cigarettes from retail stores, which may increase likelihood of continued use due to a greater access to vaping products and exposure to point-of-sale marketing.
Data are from a prospective cohort of young adults aged 18-20 years in Los Angeles who had ever used e-cigarettes at baseline (N = 1,029). We evaluated the association of underage e-cigarette purchasing behavior (owned and purchased vs. owned but never purchased vs. never owned an e-cigarette) with subsequent vaping frequency, intensity, and dependence symptoms one year later, adjusting for vaping behaviors prior to baseline; additional models evaluated whether associations differed by purchase location or product type.
At baseline, 332 (32%) had purchased e-cigarettes while underage, 227 (22%) owned but never purchased e-cigarettes themselves, and 470 (46%) never owned an e-cigarette. Compared to never owning e-cigarettes, those who had purchased their own e-cigarettes vaped more days in the past month (rate ratio [RR] = 2.97; 95% confidence interval [CI]: 2.15-4.09), had more vaping episodes per day (RR: 2.58; 95% CI: 2.12-3.14), vaped more puffs per vaping episode (RR: 1.90; 95% CI: 1.61-2.23), and had greater odds of dependence (odds ratio: 3.68; 95% CI: 2.51-5.40); elevated estimates were also observed for those who owned but never purchased e-cigarettes (vs. never owned). Vaping dependence was greatest among participants who purchased JUULs or other pod-mods.
Participants who purchased e-cigarettes underage subsequently vaped more intensely and had greater vaping dependence. Regulations that reduce underage retail access to e-cigarettes may help prevent vaping progression among those most at risk of dependence.
尽管法律禁止向年龄在 21 岁以下的个人出售电子烟，但许多未成年的年轻人仍从零售店购买电子烟，由于更容易获得电子烟产品并接触到销售点营销，这可能会增加他们继续使用电子烟的可能性。
本研究的数据来自洛杉矶一组年龄在 18-20 岁的曾在基线时使用过电子烟的年轻成年人（N=1029）。我们评估了未成年电子烟购买行为（拥有并购买与拥有但从未购买与从未拥有电子烟）与一年后电子烟使用频率、强度和依赖症状之间的关联，调整了基线前的电子烟使用行为；此外的模型还评估了关联是否因购买地点或产品类型而异。
在基线时，332 人（32%）在未成年时购买过电子烟，227 人（22%）拥有但从未自己购买过电子烟，470 人（46%）从未拥有过电子烟。与从未拥有电子烟相比，那些自己购买过电子烟的人在过去一个月内吸电子烟的天数更多（比率比 [RR] 为 2.97；95%置信区间 [CI]：2.15-4.09），每天吸电子烟的次数更多（RR：2.58；95% CI：2.12-3.14），每次吸电子烟的吸气量更大（RR：1.90；95% CI：1.61-2.23），并且依赖的可能性更大（比值比：3.68；95% CI：2.51-5.40）；对于那些拥有但从未购买过电子烟的人（与从未拥有电子烟相比），也观察到了更高的估计值。在购买 JUUL 或其他 pod-mods 的参与者中，电子烟依赖程度最高。
未成年时购买电子烟的参与者随后吸电子烟的强度更大，电子烟依赖程度更高。减少未成年零售电子烟购买途径的法规可能有助于防止那些最易产生依赖的人进一步吸食电子烟。
