The articles in this series examine the billions of dollars market for e-cigarettes and the public health consequences.
The survey found that 17% of 12th grade students reported using an electronic cigarette in the past month, compared with 13.6% who reported smoking a traditional cigarette. In the tenth grade, reported use of electronic cigarettes was 16%, compared to 7% for cigarettes. And among eighth grade students reported on the use of electronic cigarette was 8.7%, compared with only 4% who said they had smoked a cigarette in the last month.
A 2013 survey of youth smoking by the Centers for Disease Control and Prevention published in November revealed that the percentage of US high school students using electronic cigarettes rose to 4.5% in 2013 from 2.8% in 2012 The proportion of high school students who have used electronic cigarettes has remained stable at 1.1% over the same period.
The gap between the two sets of results was substantial, and researchers have struggled to explain it. Both are comprehensive and reliable federal surveys dating back years, and their methodologies do not differ to a great extent. The drug abuse institute uses individual school grades, while disease centers combine grades, which may explain some of the differences.