E-cigarettes and expectancies: why do some users keep smoking?

摘要: Background and aims Many smokers who have tried electronic cigarettes (‘e-cigarettes’) continue to smoke, perhaps influenced by their beliefs about the outcomes of using e-cigarettes (‘e-cigarette expectancies’). The primary aims this study were compare expectancies dual users former smokers, examine association between intentions quit or reduce ‘vaping’ among smokers. Design Setting A large cross-sectional online survey e-cigarette conducted in United States. Participants We surveyed current (n = 1815), including both cigarette (‘dual users’, n = 381) (n = 1434). We further subdivided into those with (n = 686) without (n = 748) use. Measurements The self-reported past-month smoking status and, use, adjusted for potential confounders. E-cigarette expectancy items derived primarily from a previously validated measure expectancies. Findings Dual reported less positive than e-cigarettes, rating as more physically irritating (β = 0.10, P < 0.001) addictive (β = 0.06, P = 0.016), well satisfying (β = –0.11, P < 0.001). Former also rated positively them likely damage health (β = 0.16, cause addiction P < 0.001), but taste good (β = –0.08, P = 0.006). Conclusions Positive are associated greater likelihood having smoking, lower intention use.