The British experience tells us that electronic cigarettes are used by less than 1% of people who have never smoked. When we look at the statistics about young people taking up vaping, we have to be very careful about the questionnaire. It's not because you used electronic cigarettes once in the past month that you've adopted them.
It's better to look at the way the British people have made up their questionnaire. They ask, “Have you ever used...?”, but also, “Do you routinely use this?” “Do you use it on a weekly basis?” “Have you bought an electronic cigarette for your own use?” The British experience says that fewer than 1% of youngsters or young adults who take up electronic cigarettes have never smoked; most have already started using tobacco cigarettes.
In all these questionnaires, they don't ask, “Have you used an electronic cigarette with nicotine or without nicotine?” They also don't ask, “If you have ever smoked tobacco cigarettes, have you tried an electronic cigarette in the past?” In the proportion of the youngsters who have tried electronic cigarettes, you have the ones who have already used tobacco cigarettes.
We have, then, to be extremely careful about the way these questionnaires are made.