RESUMEN
Community-based smoking cessation initiatives target large numbers of people, are highly visible and have the potential for great impact. Ontario's Quit Smoking (2002) Contest was evaluated one year after its implementation to measure behaviour change among adult smokers participating in the contest. The registration database of 15,521 contest participants provided the basis for a random sample of 700 participants throughout Ontario who were contacted for a follow-up telephone survey. A total of 347 surveys were completed, of which 60 percent were women. Almost one third (31.4 percent) of the survey respondents reported that they had not smoked since the start of the contest. Participation in the contest also may have delayed relapse by as much as fi ve months for 31.3 percent of respondents who resumed smoking. Older respondents, men, those who had previously attempted to quit and people who said their cessation "buddy" was helpful were more likely to stop smoking.