association between e-cigarette use initiated after cigarette smoking and smoking abstinence: a cross-sectional study among adolescent established smokers in the USa.

Introduction:
This text summarizes the results of a study examining the relationship between e-cigarette use and abstinence from cigarette smoking among US adolescent established smokers who initiated cigarette smoking first. The study also investigates this relationship specifically among those reporting to have used e-cigarettes as a tobacco cessation aid.

Key points:

* The study uses data from the National Youth Tobacco Survey (NYTS) from 2015-2018.
* The sample is restricted to ever cigarette smokers, and further restricted to ever established smokers.
* The study defines ever established smoking as >25 lifetime cigarettes smoked and first started smoking >12 months ago.
* E-cigarette use is categorized into two levels of intensity: experimental and established.
* Initiation patterns are determined by comparing respondents' ages at first use of either product.
* abstinence from cigarette smoking is defined as past 30-day abstinence.
* The study uses multivariable logistic regression analyses to examine the association between e-cigarette use and abstinence from cigarette smoking.

Main message:
The study found no evidence that e-cigarette use among US adolescents already smoking cigarettes is associated with subsequent abstinence from cigarette smoking. These findings could inform future regulatory and public health efforts regarding youth e-cigarette use and the reduction of youth cigarette smoking in the USa.

Saller FS, agaku IT, Filippidis FT. association between e-cigarette use initiated after cigarette smoking and smoking abstinence: a cross-sectional study among adolescent established smokers in the USa. Tobacco control. 2022;31(3):416-423. doi:10.1136/tobaccocontrol-2020-055943