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Tuesday, April 09, 2019


I'm curious as to how abstinence was defined. Did it mean that the e-cigarette group were no longer smoking or using e-cigs or were they only regular cigarette free?

Hi Fiona,

Footnote 2 above addresses part of your question. To be considered abstinent at follow up, members of either group had to report smoking less than five tobacco cigarettes between the second week of quitting and one-year followup. Participants could still use e-cigarettes if they were assigned to that group as long as they met the requirements of this definition of abstinence from tobacco cigarettes.

All the best,

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