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Hammond and colleagues recent Canadian Medical Association Journal (CMAJ) longitudinal cohort study is a valuable contribution to electronic cigarette related public health problems for adolescents (1). It is based on a large sample of Canadian high school student (grades 9-12) survey data. The objective of their study is to explore whether electronic cigarette use was associated with cigarette-smoking initiation at a 1-year follow-up. The study methodology is strong, and study authors were able to adjust for the known wide range of demographic and behavioral risk factors. In addition, the real strength of this study is that they were also able to control susceptibility to cigarette smoking.
The study found that, adolescents who initiated electronic cigarette use are more likely to be:
(1). smoking conventional cigarettes a year later and
(2). more likely to have become daily smokers.The recent systematic review and meta-analysis published in the Journal of the American Medical Association (JAMA) Pediatrics also suggests that adolescents and young children who start with electronic cigarette are more likely to be smoking cigarettes later (2). This systematic review and meta-analysis of 9 longitudinal studies found consistent and strong evidence that electronic cigarette use is associated with increased odds of subsequent cigarette smoking initiation and current cigarette smoking among adolescents.
Despite their strong methodology and a...
Show MoreCompeting Interests: None declared.