Background. This study describes baseline and Year 1 predictors of abstinence from smoking for the 3523 intervention participants who had complete annual 5-year follow-up data in the Lung Health Study (LHS). Methods. The LHS enrolled 5887 smokers, aged 35 to 60 years, of whom 3923 were offered a cessation intervention. Of these, 22% achieved biochemically verified abstinence for 5 years. Logistic regressions were performed. The first outcome variable was abstinence from smoking at 1 year. Then for those who were quit at 1 year, the outcome variable was 5 years of sustained abstinence. Results. All participants who were not using nicotine gum after 1 year in the study were more likely to sustain cessation over 5 years than were gum users at year 1 (OR ranged from 0.31 to 0.44 for four age- and sex- specific groups). Baseline number of previous quit attempts was negatively associated with 5-year quitting success among younger and older men (OR = 0.82 and 0.83). Older participants who were less likely to associate smoking with emotional coping had higher abstinence rates at 5 years of follow-up (OR = 0.89 and 0.84). Conclusions. Different mechanisms may be responsible for achieving cessation in age/gender groups. These results have implications for planning successful interventions. (C) 2000 American Health Foundation and Academic Press.
Bibliographical noteFunding Information:
This study was supported by contract N01-HR-46002 from the Division of Lung Diseases of the National Heart, Lung, and Blood Institute (NHLBI).
R. E. Kanner, M.D. (Principal Investigator) M. A. Rigdon, Ph.D. (Intervention Director) The Salt Lake City Center has been assisted by the Clinical Research Center, Public Health Research Grant M01-RR00064, from the National Center for Research Resources.
- Clinical trial
- Smoking cessation
- Smoking intervention