“…These studies, however, were based on a relatively limited number of participants, only five studies (three from the USA, one from Norway, and one from Italy) having a sample size exceeding 1000 ex-smokers (La Vecchia et al, 1991;Gilpin et al, 1992;Halpern and Warner, 1993;Hymowitz et al, 1997;Grotvedt and Stavem, 2005). In other crosssectional studies on motives for a (hypothetical) quit attempt of current smokers (McCaul et al, 2006;Baha and Le Faou, 2010;Pisinger et al, 2011) and a few longitudinal studies based on current smokers registered in cessation services (Barnes et al, 1985;McCaul et al, 2006;Young et al, 2010), the reasons for quitting did not necessarily result in successful smoking cessation (Hymowitz et al, 1997;McCaul et al, 2006).…”