Two peer-reviewed population studies? One said e-cigs don't work, and the other said they were ineffective?
I wish I had Glantz's email address, so I could send him my testimonial about using e-cigs to quit smoking, because, obviously, I missed those studies somewhere in my research.
Glantz deletes testimonials if they are left as comments on his blog. He says (in a dismissive tone) that they are "anecdotal evidence." So he probably would hit delete the message as soon as he realized what he was reading was a testimonial. One piece of anecdotal evidence is an interesting story. A couple of million might be considered evidence (but not to Stan.)
These are the two "large population studies" he cited in his blog:
(1) Vickerman KA, Carpenter KM, Altman T, Nash CM, Zbikowski SM. Use of electronic cigarettes among state tobacco cessation quitline callers. Nicotine Tob Res. 2013 Oct;15(10):1787-91. doi: 10.1093/ntr/ntt061. Epub 2013 May 8.
Use of Electronic Cigarettes Among State Tobacco Cessation Quitline Callers
(2) Adkison SE, O'Connor RJ, Bansal-Travers M, et al. T. Electronic nicotine delivery systems: international tobacco control four-country survey. Am J Prev Med. 2013 Mar;44(3):207-15.
Electronic nicotine delivery systems: internat... [Am J Prev Med. 2013] - PubMed - NCBI
The sponsor of the first study stated, "The recently published article by Dr. Katrina Vickerman and colleagues has been misinterpreted by many who have written about it. It was never intended to assess the effectiveness of the e-cig as a mechanism to quit."
E-Cigs: Are They A Problem Or A Solution?
The other study referred to e-cigarettes as "ENDS" (for Electronic Nicotine Delivery Systems), and the abstract stated: "Because trial was associated with nondaily smoking and a desire to quit smoking, ENDS may have the potential to serve as a cessation aid."
In addition, a recent clinical trial found, "E-cigarettes, with or without nicotine, were modestly effective at helping smokers to quit, with similar achievement of abstinence as with nicotine patches, and few adverse events."
Bullen C, Howe C, Laugesen M, et al. Electronic cigarettes for smoking cessation: a randomised controlled trial. Lancet. 2013 Sep 9. pii: S0140-6736(13)61842-5.
Electronic cigarettes for smoking cessation: a random... [Lancet. 2013] - PubMed - NCBI
The actual abstinence rates were 7.3% for nicotine e-cigarette group, 5.3% for the patch, and 4.1 for no-nicotine e-cigarette group. Since the differences did not reach statistical significance, the authors chose to average them to 5.7%
Most media coverage said that e-cigarettes were as good as the patch. e.g.
E-cigarettes as good as nicotine patches in helping smokers quit | Reuters
However, Stan's interpretation was a bit different.
New RCT shows ecig quitting rate no better than nicotine patch | Center for Tobacco Control Research and Education