State and Community Tobacco-control Programs and Smoking-cessation Rates Among Adult Smokers: What Can We Learn From the COMMIT Intervention Cohort?

Abstract Purpose. To assess the long-term effect of a randomized community-based trial of smoking cessation and to examine the effect of exposure to large state-based tobacco-control programs on smoking cessation. Design. Longitudinal tobacco-use telephone surveys conducted in 1988, 1993, and 2001. Setting and Participants. Baseline smokers (6603) from 20 communities in 9 states completed a survey in 2001 (35% of the original sample). Intervention. The Community Intervention Trial for Smoking Cessation (COMMIT) intervention was a randomized community-based smoking-cessation intervention between 1988 and 1993. In addition, cohort data were used to evaluate quasi-experimental differences in the strength of state-level tobacco control programs and policies. Measures. Multivariate logistic regression was used to compare quit rates among those who were exposed to community-or state-level tobacco-control programming and those who were not between 1988 and 2001. Results. Quit rates were higher in the COMMIT inte...