{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T23:53:16Z","timestamp":1792108396794,"version":"4.4.0"},"reference-count":48,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2021,4,1]],"date-time":"2021-04-01T00:00:00Z","timestamp":1617235200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000054","name":"National Cancer Institute","doi-asserted-by":"publisher","award":["T32 CA-117310"],"award-info":[{"award-number":["T32 CA-117310"]}],"id":[{"id":"10.13039\/100000054","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Tobacco Center of Regulatory Science at the University of California, San Francisco","award":["P50 CA180890"],"award-info":[{"award-number":["P50 CA180890"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>Two-thirds of cigarette smokers experiencing homelessness report using alternative tobacco products, including blunts, cigarillos (little cigars) or roll-your-own tobacco or electronic nicotine delivery systems such as e-cigarettes. We examined attitudes toward e-cigarette use and explored whether e-cigarette use patterns were associated with past-year cigarette quit attempts among current smokers experiencing homelessness. Among the 470 current cigarette smokers recruited from homeless service sites in San Francisco, 22.1% (n = 65) reported the use of e-cigarettes in the past 30 days (\u2018dual users\u2019). Compared to cigarette-only smokers, dual users considered e-cigarettes to be safer than cigarettes. Patterns of e-cigarette use, including the number of times used per day, duration of use during the day, manner of use and nicotine concentration were not associated with past-year cigarette quit attempts. Studies that examine the motivations for use of e-cigarettes, particularly for their use as smoking cessation aids, could inform interventions for tobacco use among people experiencing homelessness.<\/jats:p>","DOI":"10.3390\/ijerph18073691","type":"journal-article","created":{"date-parts":[[2021,4,1]],"date-time":"2021-04-01T10:44:01Z","timestamp":1617273841000},"page":"3691","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["E-Cigarette Use among Current Smokers Experiencing Homelessness"],"prefix":"10.3390","volume":"18","author":[{"given":"Arturo","family":"Durazo","sequence":"first","affiliation":[{"name":"Center for Tobacco Control Research and Education, University of California, 530 Parnassus Avenue Suite 366, San Francisco, CA 94143, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marlena","family":"Hartman-Filson","sequence":"additional","affiliation":[{"name":"Division of General Internal Medicine, University of California, 1001 Potrero Avenue, San Francisco, CA 94110, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Holly","family":"Elser","sequence":"additional","affiliation":[{"name":"Division of Adolescent Medicine, Department of Pediatrics, Stanford University, 770 Welch Road, Suite 100, Palo Alto, CA 94304, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Natalie M.","family":"Alizaga","sequence":"additional","affiliation":[{"name":"Humanities and Social Sciences Division, Department of Psychology, Ca\u00f1ada College, 4200 Farm Hill Blvd, Bldg 03-139, Redwood City, CA 94061, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maya","family":"Vijayaraghavan","sequence":"additional","affiliation":[{"name":"Division of General Internal Medicine, University of California, 1001 Potrero Avenue, San Francisco, CA 94110, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,4,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"312","DOI":"10.1007\/s10900-017-0423-7","article-title":"Smoking Policy Change within Permanent Supportive Housing","volume":"43","author":"Petersen","year":"2017","journal-title":"J. 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