What factors are associated with current smokers using or stopping e-cigarette use?

•Some smokers also use e-cigarettes; many stop e-cigarette use but continue to smoke.•Smokers using e-cigarettes are more motivated to stop smoking than other smokers.•Smokers who discontinue using e-cigarettes have a higher dependence on smoking.

BackgroundWhile some smokers use e-cigarettes and stop smoking, a substantial proportion try e-cigarettes and later discontinue or use them concurrently with smoking (current dual users). The aim was to assess factors associated with ongoing e-cigarette use and discontinuation among smokers.MethodsSecondary analysis of data of 1489 currently smoking adults, 18 and above, from a GB population-based online survey conducted in March 2016. A multivariable logistic regression assessed motivation to stop smoking among never e-cigarette users, past triers (