First, he cites the JAMA Pediatrics article in which Glantz and Dutra conclude that electronic cigarettes are exaggerating, rather than ameliorating smoking among youth. Clive writes: "somehow you have managed to position this study as showing there is a gateway from e-cigarette use to smoking. NOTHING in the study or the underlying data suggests this. You would need information on how smoking, e-cigarette use and abstinence evolved over time to test these hypotheses, but your study does not have that."

The study concludes that e-cigarettes are not helpful for smoking cessation among cancer patients.

Sidney et al. found that among women, lung cancer risk was for lifelong smokers of filtered cigarettes than smokers of non-filtered cigarettes: "in long-term (> 20 years) smokers, the risk of lung cancer was decreased in women who had smoked filtered cigarettes for 20 or more years relative to lifelong smokers of unfiltered cigarettes (RR = 0.36, CI = 0.18-0.75)."

The truth is that many of the electronic cigarette users in the study did not use electronic cigarettes in their quit attempts! According to data provided in the paper, a full 28% of the sample of electronic cigarettes did not use these products in their quit attempts.

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