Svg among us3/28/2024 Both cohorts used the same survey measures and digital interfaces.īaseline self-reported past 30-day use of various e-cigarette device types were measured using separate items for each electronic nicotine device. ADVANCE participants completed in-classroom surveys 2 times per year on computers at their respective schools those absent during data collection days completed web-based surveys remotely outside of their class time. The ADVANCE Study 21 cohort recruited adolescents in ninth grade from 11 schools across 5 Southern California counties in 20 (Los Angeles, Riverside, San Bernardino, Orange, or Imperial counties). After high school, young adult surveys in the H&H study were conducted remotely, wherein participants were sent an online invitation with a link to complete the web-based survey. The Happiness and Health (H&H) 20 Study cohort initially recruited ninth graders from 10 high schools in Los Angeles County in 2013 who completed surveys of health behavior 1 to 2 times per year throughout high school and into young adulthood. This study pooled data from 2 consecutive survey waves from 2 ongoing longitudinal cohorts. ![]() US Food and Drug Administration (FDA), state, and local regulatory agencies can place sales restrictions on e-cigarette devices that, when used by AYAs, may perpetuate or exacerbate e-cigarette use patterns. 15, 16 In comparison with nonprotonated nicotine solutions often used in refillable devices, 17, 18 nicotine salt solutions are less harsh and bitter, 19 which might result in deeper inhalation, increased nicotine extracted per puff, and higher puff intensity patterns. Most disposable devices contain nicotine in protonated salt formulation. 14 These devices are inexpensive and more convenient than nondisposable devices because they do not require recharging, purchasing e-liquid refills, and/or replacement pods. Disposable e-cigarettes come in colorful packaging and designs and various sweet flavors and can be used discreetly and easily concealed, appealing to AYAs. ![]() ![]() 12, 13 Disposable e-cigarettes – the most prevalent device type used among US AYAs 3, 14 – could increase risk of persistent, frequent, and high intensity e-cigarette use. E-cigarettes are available in various device types, including tank-style or pen-like devices, rechargeable pod-style devices, and disposable products ( Supplemental Figs 2 and 3).
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