It is well known that many smokers who quit during cessation programs relapse soon after leaving treatment. To investigate the relationship of health locus of control, social support, nonsmoking areas, and objecting to another person's smoking to relapse and long-term maintenance of nonsmoking, male (N=70) and female (N=149) subjects participated in a single session group hypnosis treatment for smoking cessation and completed questionnaires prior to and 1 year after treatment. Results showed that three smoking status groups could be defined. Exsmokers actively coped with smokers in their environment and received considerable support from family and friends. Recidivists placed greater responsibility for their health on others, did not actively cope with smokers, and were more likely to participate in additional hypnosis. Males tended to be exsmokers, while females tended to be continuing smokers. The findings suggest that post-treatment factors appear to be more important than participant characteristics for long-term maintenance of nonsmoking. (Author/JAC)