Statistical analysis plan For the primary outcome the investigators will compare the time-to-relapse and the change in the Fagerström Tolerance Questionnaire. Secondary outcomes include point prevalence abstinence at 12-weeks biochemically confirmed by end-expired carbon monoxide. The investigators will use Cox proportional hazards models to compare the differences in relapse between study arms. The investigators will compare the change outcome at 12-weeks between arms using logistic regression using repeated measured ANOVA.