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Evidence of a Dose—Response Relationship Between "truth" Antismoking Ads and Youth Smoking Prevalence

Matthew C. Farrelly, PhD, Kevin C. Davis, MA, M. Lyndon Haviland, DrPH, Peter Messeri, PhD and Cheryl G. Healton, DrPH

Matthew C. Farrelly and Kevin C. Davis are with RTI International, Research Triangle Park, NC. At the time of the study, M. Lyndon Haviland was with, and Cheryl G. Healton is with, the American Legacy Foundation, Washington, DC. Cheryl G. Healton is also with the Mailman School of Public Health, Columbia University, New York, NY. Peter Messeri is with the Mailman School of Public Health, Columbia University.



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  		FIGURE 1—— How media markets across the country (only 48 states shown) were exposed to various levels or doses of the national "truth" campaign, 2000–2002. Ratings given are in gross rating points.

 


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  		FIGURE 2—— Odds ratios for smoking at varying levels of "truth" campaign exposure among all grades, overall and by year.
Note. GRP = gross rating point.

 




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