What Stan does not reveal in his review article is that instead of estimating cessation rates among a cohort of smokers who made quit attempts using these products, the Vickerman study analyzed cessation rates of a large number of smokers who had previously tried to quit using e-cigarettes but failed, and then called a quitline because they had failed and wanted to try again. Then, they compared the quit rate among these smokers to that among smokers without such a history of a failed quit attempt using electronic cigarettes.

The failure of the report to disclose financial conflicts of interests of its authors is problematic for several reasons.

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