Does non-smoker identity following quitting predict long-term abstinence? Evidence from a population survey in England.

"Conflict of interest Ildiko Tombor and Caitlin Notley do not have any conflict of interest to declare. Lion Shahab has received honoraria for talk and travel expenses from manufacturers of medications for smoking cessation to attend meetings and workshops. Jamie Brown has received an unrestricted research grant from Pfizer. Robert West has undertaken research and consultancy for companies that develop and manufacture smoking cessation medications."

"We are grateful to the Society for the Study of Addiction (509857 (Ildiko Tombor) and 508045 (Jamie Brown)) for providing funding for Ildiko Tombor’s PhD, and Caitlin Notley’s and Jamie Brown’s academic fellowships. Robert West is funded by the Cancer Research UK (511357). We thank the English Department of Health, Pfizer, GlaxoSmithKline and Johnson and Johnson for funding the Smoking Toolkit Study. The research team is part of the UK Centre for Tobacco Control Studies."