{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,24]],"date-time":"2026-01-24T16:04:34Z","timestamp":1769270674070,"version":"3.49.0"},"reference-count":71,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2024,7,2]],"date-time":"2024-07-02T00:00:00Z","timestamp":1719878400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Public Health"],"abstract":"<jats:p>This perspective discusses how to best define \u201ce-cigarette use\u201d among youth in a way that is relevant to individual and human health. Commonly-used definitions of youth e-cigarette use have been adapted from measures validated for tobacco cigarette smoking among adults, but may not carry the same meaning for a different product (with a much lower risk profile and very different patterns of use) and a different population (whose use is more often transient and experimental, rather than frequent and persistent). We discuss strengths and weaknesses of different definitions, and recommend improvements in defining youth e-cigarette use. We find that current literature employs a range of definitions of e-cigarette use, from lifetime use (\u201ceven a puff\u201d) to daily use. More lenient measures capture more potentially at-risk youth, but much of this is transient experimentation that has negligible risks in and itself, if not persistent. More stringent measures such as daily use are more relevant to individual and public health. Future research should examine possible improvements to definitions which include intensity of use (e.g., number of puffs per day) and persistence\/duration of use, either via self-report or technology-assisted data capture.<\/jats:p>","DOI":"10.3389\/fpubh.2024.1412406","type":"journal-article","created":{"date-parts":[[2024,7,2]],"date-time":"2024-07-02T04:19:13Z","timestamp":1719893953000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":7,"title":["Measures of youth e-cigarette use: strengths, weaknesses and recommendations"],"prefix":"10.3389","volume":"12","author":[{"given":"Arielle","family":"Selya","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martino","family":"Ruggieri","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Riccardo","family":"Polosa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1965","published-online":{"date-parts":[[2024,7,2]]},"reference":[{"key":"ref1","volume-title":"Public health consequences of E-cigarettes","year":"2018"},{"key":"ref2","volume-title":"Nicotine vaping in England: 2022 evidence update main findings","year":"2022"},{"key":"ref3","doi-asserted-by":"publisher","first-page":"7","DOI":"10.1038\/s41591-024-02926-7","article-title":"Nicotine e-cigarettes: considerations for healthcare providers","volume":"4","author":"Toll","year":"2024","journal-title":"Nat Med"},{"key":"ref4","doi-asserted-by":"publisher","first-page":"1661","DOI":"10.2105\/AJPH.2021.306416","article-title":"Balancing consideration of the risks and benefits of E-cigarettes","volume":"111","author":"Balfour","year":"2021","journal-title":"Am J Public Health"},{"key":"ref5","doi-asserted-by":"publisher","first-page":"3164","DOI":"10.3390\/ijerph16173164","article-title":"An examination of the variation in estimates of E-cigarette prevalence among U.S","volume":"16","author":"Levy","year":"2019","journal-title":"Int J Environ Res Public Health"},{"key":"ref6","doi-asserted-by":"publisher","first-page":"1824","DOI":"10.1001\/jama.2019.15331","article-title":"Prevalence of e-cigarette use among adults in the United States, 2014-2018","volume":"322","author":"Dai","year":"2019","journal-title":"JAMA"},{"key":"ref7","doi-asserted-by":"publisher","first-page":"146","DOI":"10.1136\/tobaccocontrol-2018-054382","article-title":"Vaping versus JUULing: how the extraordinary growth and marketing of JUUL transformed the US retail e-cigarette market","volume":"28","author":"Huang","year":"2019","journal-title":"Tob Control"},{"key":"ref8","doi-asserted-by":"publisher","first-page":"837","DOI":"10.3390\/ijerph191710837","article-title":"Consumption of JUUL vs. other E-cigarette brands among U.S. E-cigarette users: evidence from wave 5 of the PATH study","volume":"19","author":"Wang","year":"2022","journal-title":"Int J Environ Res Public Health"},{"key":"ref9","doi-asserted-by":"publisher","first-page":"1052","DOI":"10.1093\/ntr\/ntac284","article-title":"Trends in US E-cigarette sales and prices by nicotine strength, overall and by product and flavor type, 2017-2022","volume":"25","author":"Ali","year":"2023","journal-title":"Nicotine Tob Res"},{"key":"ref10","doi-asserted-by":"publisher","first-page":"672","DOI":"10.15585\/mmwr.mm7225a1","article-title":"E-cigarette unit sales by product and flavor type, and top-selling brands, United States, 2020-2022","volume":"72","author":"Ali","year":"2023","journal-title":"MMWR Morb Mortal Wkly Rep"},{"key":"ref11","doi-asserted-by":"publisher","first-page":"ntae074","DOI":"10.1093\/ntr\/ntae074","article-title":"Pharmacokinetics and pharmacodynamics of inhaled nicotine salt and free-base using an e-cigarette: a randomized crossover study","volume":"10","author":"Christen","year":"2024","journal-title":"Nicotine Tob Res"},{"key":"ref12","year":"2023"},{"key":"ref13","doi-asserted-by":"publisher","first-page":"1173","DOI":"10.15585\/mmwr.mm7244a1","article-title":"Tobacco product use among U.S. middle and high school students - 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