© 2003 by Oxford University Press
© 2003 Oxford University Press
ARTICLE |
Evaluation of the American Stop Smoking Intervention Study (ASSIST): A Report of Outcomes
Affiliations of authors: Johns Hopkins Bloomberg School of Public Health (FAS), Division of Cancer Control and Population Sciences (FAS, AMH), Division of Cancer Epidemiology and Genetics (BIG), National Cancer Institute, Bethesda, MD; Cancer Prevention and Control Program, University of California, San Diego, CA (EAG); Department of Psychology, University of Memphis, Memphis, TN (DMM); Information Management Services, Silver Spring, MD (JTG).
Correspondence to: Frances A. Stillman, EdD, Institute for Global Tobacco Control, The Johns Hopkins Bloomberg School of Public Health, 615 North Wolfe St., Rm. W6027, Baltimore, MD 21205 (e-mail: fstillma{at}jhsph.edu)
Background: The National Cancer Institute funded an 8-year, nonrandomized demonstration project for tobacco prevention and control, the American Stop Smoking Intervention Study (ASSIST). To evaluate ASSIST, we compared changes in adult smoking prevalence, per capita cigarette consumption, and tobacco control policies between the 17 ASSIST states and the 33 non-ASSIST states and the District of Columbia. Methods:The strength of tobacco control index was used to measure state-level program elements directed at tobacco control, and the initial outcomes index (IOI) was used to measure states’ tobacco control policy outcomes. Prevalence data were obtained from the Tobacco Use Supplement to the Current Population Survey, and consumption data were obtained from the Tobacco Institute’s bimonthly sales figures for cigarette packs moved from wholesale warehouses. Two-stage regression and mixed-effects linear modeling were used to analyze the various outcomes. Statistical analyses for testing individual regression coefficients were one-sided. Results:ASSIST states had a greater decrease in adult smoking prevalence than non-ASSIST states, with an adjusted difference of –0.63% (P = .049). Per capita cigarette consumption was not statistically significantly different between ASSIST and non-ASSIST states. However, an increase in the IOI of a state from the 25th to the 75th percentile was associated with a reduction in per capita cigarette consumption by 0.57 packs per person per month. State IOI was also inversely, albeit not statistically significantly, associated with smoking prevalence (regression coefficient = –0.11;P = .06). Conclusions:The reduction in adult smoking prevalence associated with ASSIST could have translated into approximately 278 700 fewer smokers nationwide if all states had implemented ASSIST. Investment in building state-level tobacco control capacity and promoting changes in tobacco control policies are effective strategies for reducing tobacco use.
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