Comparison of e-cigarette use characteristics between exclusive e-cigarette users and dual e-cigarette and conventional cigarette users: an on-line survey in France.

Introduction:
This text is a summary of a scientific study comparing the characteristics of e-cigarette use between exclusive e-cigarette users and dual users of e-cigarettes and conventional cigarettes in France. The study is based on an online survey and includes 3189 adult current users of electronic cigarettes.

Key points:

* The study found that dual users had higher estimated daily nicotine intake from e-liquids and cigarettes, but lower daily nicotine intake from e-cigarettes and reported less months of e-cigarette use compared to exclusive e-cigarette users.
* The survey was launched to assess the association of demographic, smoking and e-cigarette characteristics among current e-cigarette users.
* Participants were asked to complete a French language survey and data was collected from October 4th to November 11th, 2014.
* The study defined dual use as using at least one cigarette per day while also using e-cigarettes.
* The primary outcome was estimated nicotine intake per day from participants' reports and secondary outcomes included duration, frequency of e-cigarette use, and nicotine content of e-liquids used/day.
* The study found that dual users reported a shorter duration of e-cigarette use and higher total nicotine intake compared to exclusive e-cigarette users.
* The study also found that dual users reported checking their e-cigarette more frequently when leaving home.

Main message:
The study suggests that dual users in France may have higher nicotine intake overall than exclusive e-cigarette users, but may take in less nicotine from their e-cigarettes. The study also highlights the need for further research to understand the characteristics and patterns of e-cigarette use among dual users and the potential implications for tobacco control policies.

Berlin I, Nalpas B, Targhetta R, Perney P. Comparison of e-cigarette use characteristics between exclusive e-cigarette users and dual e-cigarette and conventional cigarette users: an on-line survey in France. addiction (abingdon, England). 2019;114(12):2247-2251. doi:10.1111/add.14780