associated Changes in E-cigarette Puff Duration and Cigarettes Smoked per Day.

Introduction:
This text is a summary of a scientific study examining the relationship between changes in e-cigarette puffing topography and changes in smoking behavior among a sample of smokers switching to a more advanced tank-style e-cigarette. The study aimed to examine real-time changes in e-cigarette topography and subsequent changes in smoking behavior among the sample.

Key Points:

* The study recruited 33 participants and instructed 16 of them to switch to the study e-cigarette over a 2-week period.
* Participants' e-cigarette puffing patterns were measured via a second-generation e-cigarette equipped with Bluetooth capabilities.
* Measures of e-cigarette puffing behavior were collected in real-time and included total number of puffs and total puff duration per day.
* Participants were also provided with a calendar to track the number of cigarettes smoked per day during the study period.
* The study found that while users' number of puffs per day remained relatively stable, their puff duration increased over the 2-week study period.
* Participants who exhibited the greatest increase in e-cigarette puff duration reported the greatest reduction in cigarette smoking.
* On average, users reduced their daily cigarette intake by 80%, with corresponding reductions in eCO of almost 40% and no significant change in their self-reported smoking urges.

Main Message:
The main message of this study is that there is a relationship between changes in e-cigarette puffing topography and changes in smoking behavior among smokers switching to e-cigarettes. Specifically, the study found that users who exhibited the greatest increase in e-cigarette puff duration reported the greatest reduction in cigarette smoking. These results have important implications for understanding how to effectively use e-cigarettes to reduce and eventually quit smoking, which will be necessary as smokers increasingly turn to these products to facilitate possible cessation. however, the study also highlights the need for further research in this area, including the validation of e-cigarette topography measures and the examination of changes in user's nicotine levels over time.

Wagener TL, avery Ja, Leavens ELS, Simmons WK. associated Changes in E-cigarette Puff Duration and Cigarettes Smoked per Day. Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco. 2021;23(4):760-764. doi:10.1093/ntr/ntaa211