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E-cigarettes: an evidence update <br /> <br />28 <br /> <br />The ASH survey indicates that about 60% of current EC users are current smokers, and <br />about 40% are ex-smokers. The proportion of EC users among never smokers remains <br />negligible. <br /> <br />Summary <br />Around one in 20 of the general adult population in England (and GB) use EC. Current <br />EC users are almost exclusively smokers or ex-smokers. EC use among long-term ex- <br />smokers is considerably lower than among recent ex-smokers. <br /> <br />Trends in e-cigarette use among adults <br />Both the STS and ASH surveys demonstrate that there was a steady increase in EC <br />use in the population from 2011 to 2013. <br /> <br />Smoking Toolkit Study (STS) data <br />The STS data indicate that this increase slowed down, even declining at the end of <br />2014 from 5.3% in Q3 to 4.5% in Q4 (Figure 1). However, as Q1 data from 2015 show a <br />recent upswing to 5.5%, this decline may have been temporary. The STS data show <br />that alongside the increase in EC use, smoking of tobacco cigarettes declined. Overall <br />nicotine use, ie any consumption via cigarette smoking, NRT use or EC use, has also <br />declined. <br /> <br />Figure 1: Prevalence of smoking and e-cigarette use among the adult English population <br />(STS) <br /> From www.smokinginengland.info/latest-statistics/