The odds ratio for successful quitting for the e-cigarette group compared to subjects who used no cessation aid was 1.38 (95% confidence interval, 1.08-2.93).

"Some people have been worried that electronic cigarettes could be a gateway into smoking for young people. These figures show that has not happened so far. But we need to keep monitoring use in young people, and make sure advertising and promotion of electronic cigarettes doesn’t glamourise their use."

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