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| =Studies - Not Catagorized= | | =Studies - Not Catagorized= |
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| ===2018: [https://tobaccocontrol.bmj.com/content/28/1/42 E-cigarette initiation and associated changes in smoking cessation and reduction: the Population Assessment of Tobacco and Health Study, 2013–2015]===
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| *Daily e-cigarette initiators were more likely to have quit smoking cigarettes or reduced use compared with non-users. However, less frequent e-cigarette use was not associated with cigarette cessation/reduction. These results suggest incorporating frequency of e-cigarette use is important for developing a more thorough understanding of the association between e-cigarette use and cigarette cessation.
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| *[https://tobaccocontrol.bmj.com/content/tobaccocontrol/early/2018/03/24/tobaccocontrol-2017-054108.full.pdf PDF Version]
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