As you can see in these image from their website, a Cigavette looks like any other electronic cigarette. They have all the same components and look the same. But the key difference, according to Cigavette, is the “smart chip” that controls the heating element and LED.

Neither the survey approach or the RCT approach is perfect. Both have major strengths and significant limitations. The best way to proceed is to conduct both types of studies and to synthesize the results across study designs, keeping in mind the methodological strengths and limitations of each individual study. Only by looking at this totality of the evidence can we draw valid scientific conclusions.

I do not begrudge the CDC for holding a different position than I do regarding electronic cigarettes. However, I find it abhorrent that the CDC is supporting this position by disseminating false and misleading information that is completely unsupported by scientific evidence. Our nation's leading public health agency should not be acting in this way.

There are four major reasons why hiding conflicts of interest are problematic:

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?

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