There are some specific problems with survey studies that could lead to an overestimation of the benefits of electronic cigarettes. One major problem is that a survey study of the use of advanced vapor products would result in a severe bias towards finding a high level of effectiveness of these products. The reason? By the time smokers advance to use products like open-ended systems, they have already experienced success, fulfillment, and enjoyment with vaping. In other words, limiting the sample to users of advanced vapor products filters out the majority of e-cigarette users, who do not experience great success and therefore don't go on to the more advanced products.

In an published early this week in the Los Angeles Times, CDC director Dr. Thomas Frieden issues a blistering attack on electronic cigarettes. In the article, he compares the damage and destruction caused by tobacco cigarettes with e-cigarettes, suggesting that another generation of our kids is going to become addicted to smoking because of e-cigarettes. He argues that the electronic cigarette industry is harming "hundreds of thousands of children."

LAST：Factory price of pluto b2 dry wax vaporizer,best cartomizer e-cigarette |NEXT：popular ecig battery best seller with high quality kgo-1week electronic cigarette ego