WCC: Daily use of electronic cigarettes ‘a powerful aid to quitting smoking’
as presented at the World Cancer Congress
The daily use of electronic cigarettes for at least one month seems a powerful aid to quitting smoking, according to a study presented at WCC, held in December in Melbourne.
Researchers at the University of Massachusetts in Boston conducted phone surveys of representative samples of adults in two U.S. metropolitan areas in 2011/2012 about their use of novel tobacco products. In 2014, follow-up interviews were conducted with 695 of the 1374 baseline cigarette smokers who had agreed to be re-contacted. The follow-up interview assessed their current smoking status and their history of electronic cigarette usage. The investigators categorized respondents as intensive users (used ecigs daily for at least one month), intermittent users (used regularly, but not daily for more than one month), or non-users (had never used e-cigarettes or used at most once or twice).
They found that ecig use increased from 22% to 70% at follow-up. At follow-up, 23% were intensive users, 29% intermittent users, 18% had used once or twice, and 30% hadn’t tried ecigs. A multivariate logistic regression, controlling for demographics and level of tobacco dependence, indicated that those who used ecigs intensively, were six times as likely to quit smoking as non-users, according to the Boston researchers. No such relationship was seen for intermittent users. Other analyses suggested that among those still smoking at follow-up, intermittent ecig use may have reduced the likelihood of future quitting.
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