Although the survey approach described above would lead to "invalid" results, I would never argue that survey studies should be thrown out and that we should only be conducting RCTs. My point is that there are strengths and limitations of various study designs, and causal inference is enhanced by having research evidence from multiple study designs. On balance, the strengths and weaknesses balance each other out, leading to a much greater ability to draw valid conclusions.

E-cig Taxes

Previously, there was a significant history of tobacco-funded researchers failing to disclose their conflicts of interest. By now doing the same thing, we are blurring the distinction. Now, the public is going to question the integrity of our research, not just that conducted by or supported by the tobacco companies.

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