Ironically, Stan Glantz criticized the study specifically because it examined the effect of electronic cigarettes on quitting among smokers who desired to quit. According to an in the New York Times: "Stanton A. Glantz, a professor of medicine at the University of California, San Francisco, said the study’s limitation was that it tried to measure the effect of e-cigarette use only among smokers who were trying hard to quit, not all smokers."

Specifically, the survey of 2,000 11-18 year-olds in 2014 found that:

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