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Study: Graphic, stop-smoking images more effective than cancer-warning text

SAN DIEGO — Health warning labels on cigarette packages that use pictures to show the health consequences of smoking are effective in reaching adult smokers, according to the results of a new study published in the December issue of the American Journal of Preventive Medicine

Although previous studies have demonstrated that warning labels with pictorial imagery are more effective than warning labels featuring only text in increasing knowledge about smoking dangers and promoting the benefits of quitting, this new research shows which kind of pictures appears to work best among adult smokers in the U.S., including smokers from disadvantaged groups where smoking rates are highest.

"More than 40 countries have implemented pictorial health warning labels. The U.S. was scheduled for implementation in 2012, but tobacco industry litigation has delayed implementation by claiming that the pictorial warnings the FDA proposed violate the industry's right to free speech," stated James Thrasher, lead investigator with the Department of Health Promotion, Education, and Behavior, Arnold School of Public Health at the University of South Carolina. "To inform future warning label policy development and implementation, more data are needed on U.S. consumer responses to various kinds of warning label content," he said. "The current study addresses this issue, while focusing on responses among smokers from low-income populations, where smoking remains prevalent because previous tobacco control interventions have been less successful in reaching this group than higher income populations."

With financial support from the South Carolina Clinical & Translational Research Institute residing at the Medical University of South Carolina CTSA, the National Institute of Drug Abuse and the U.S. National Cancer Institute, Thrasher and his research team conducted field experiments with nearly 1,000 adult smokers from July 2011 to January 2012. 

"The present study provided the first direct test of the hypothesis that pictorial health warning labels work better than text-only labels among people with low health literacy," Thrasher said. "Ratings of the personal relevance and effectiveness of pictorial labels compared to textual labels were no different for smokers in high- compared to low-health literacy groups. However, smokers with low-health literacy rated pictorial labels as more credible than text-only warnings, whereas no difference was found among smokers with high-health literacy."

The reaction to the specific type of imagery used in the pictorial warning labels also varied by study participants' health literacy and race. Warning labels with abstract imagery produced the greatest differences between these two groups, although this type of warning label imagery produced the weakest responses overall. Across the board, participants rated the graphic warning labels as the most effective and most likely to influence them.

"These results suggest that the FDA should consider implementing warning labels with more graphic imagery in order to maximize the impact of warnings across different populations of adult smokers, including more disadvantaged smokers," Thrasher noted. 

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