A large proportion of the 88 smokers who had tried an e-cigarette may have simply been trying these products to see what they are like. It is plausible, in fact probable, that many of these 88 smokers were not actually interested in quitting or trying to quit with electronic cigarettes. These products have become very popular and have gained widespread media attention and it is entirely possible that many of these smokers simply wanted to see what the big fuss is all about.

Here, they find a correlation between e-cigarette use and higher and more sustained levels of smoking. But because this is a cross-sectional study, they cannot determine which came first. In other words, what is the direction of the causal relationship? Does the e-cigarette use precede, and cause, the smoking? Or does the smoking precede, and cause, the e-cigarette use?

While I agree with the editorial, it is quite a condemnation of the current field of tobacco control research.

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