In other words, this study did not estimate quit rates among smokers trying to quit using e-cigarettes. Instead, it estimated quit rates among many smokers who were not using e-cigarettes in their quit attempt at all!
The authors conclude as follows:
"By January 2014 there were 466 brands (each with its own website) and 7,764 unique flavors. ... Newer brands offered more flavors per brand (49 vs. 32) ... ."
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