Longitudinal Examination of Predictors of Smoking Cessation in a National Sample of U.S. Adolescent and Young Adult Smokers
Menée à partir des données d'une enquête nationale portant sur 2 582 fumeurs âgés de 16 à 24 ans, cette étude longitudinale américaine identifie les facteurs prédictifs associés au sevrage tabagique dans cette catégorie de population
Introduction : To better inform the development of smoking cessation programs for adolescents and young adults, a prospective study was employed to systematically examine behavioral, demographic, health, and psychosocial determinants of smoking cessation.
Methods : Data from the 2003–2005 National Youth Smoking Cessation Survey were used. Of 2,582 smokers (16–24 years) sampled, 1,354 provided complete baseline telephone interview data on the study variables, and their self-reported smoking status at 2-year follow-up was known (currently smoking vs. not smoking). Multivariable logistic regression analysis was employed to examine independent predictors of smoking status (outcome variable) at the 2-year follow-up period.
Results : Four of 5 participants remained smokers after 2 years. Of high nicotine dependence smokers, 90% remained smokers at follow-up; of low nicotine dependence smokers, 77% remained smokers at follow-up. Higher nicotine dependence smokers started smoking earlier in life (13.2 vs. 14.3 years; p < .05). Similarly, those not smoking at the 2-year follow-up period started smoking later in life than those still smoking (14.5 vs. 13.7 years). Along with nicotine dependence, various psychosocial and demographic variables at baseline predicted smoking status at the 2-year follow-up period.
Conclusions : Identifiable demographic and psychosocial factors influence smoking behavior among U.S. adolescents and young adults. Even low nicotine dependence is a strong predictor of follow-up smoking behavior. This, coupled with the early smoking age of high nicotine dependence smokers, underscores the importance of early nicotine avoidance among youth.
Nicotine & Tobacco Research , résumé, 2014