Understanding decisions to use e-cigarettes or behavioural support to quit tobacco: a qualitative study of current and ex-smokers and stop smoking service staff.

In England, smokers' decisions to use e-cigarettes and local stop smoking services appear to be determined by varied influences across the COM-B framework. Both smokers and stop smoking service professionals display diverse views about potential risks from e-cigarettes, which has relevance for the provision of behavioural support as well as the uptake of vaping.