The odds ratio for successful quitting for the e-cigarette group compared to subjects who used NRT was 2.23 (95% confidence interval, 1.70-2.93).

The authors of this study make one of the most cardinal errors in all of epidemiology. They ignore the principle that "correlation does not equal causation."

Why would public health practitioners like Dr. Glantz and his colleagues support an action that will end the great electronic cigarette experiment and permanently hand the entire cigarette market over to Big Tobacco?

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