Aim: To identify the predictors of six-month continuous abstinence among Greek smokers treated in a Smoking Cessation Clinic, emphasising the role of sleep disturbance on the outcome.
Methods: A nested case-control design was used. Patients who attended the Smoking Cessation Clinic between November 2004 and October 2005, and who completed six months of follow-up, constituted the final study population (N=285). The patients were separated into two groups - those who managed to quit smoking and those who didn't. The cessation method included pharmacotherapy, one-to- one behavioral counselling, and follow-up by telephone communication.
Results: Among various baseline characteristics examined, multivariate regression analysis indicated that the time to first cigarette after awakening, and use of bupropion, independently predicted abstinence, while awakening during the night was negatively associated with abstinence.
Conclusion: These multivariate factors, which can positively or negatively affect the outcome, should be taken into account so that smoking cessation treatment can be individualised.