<qa>  What is the primary hypothesis that treatment will increase the probability of 30-day sustained cessation fromPrimary and secondary outcome measure. The primary hypothesis is that treatment will increase the probability of 30-day sustained cessation from all forms of tobacco, as reported by randomly selected patients one year after the initial clinic visit. Other secondary follow-up measures will include one-week and 6-month point prevalence at one year, stage of change, quit attempts during the year, and smoking rate among continuing smokers. 