Visual presentations of efficacy data in direct-to-consumer prescription drug print and television advertisements: A
Helen W Sullivan1, Amie C O'Donoghue1, Kathryn J Aikin1
1U.S Food and Drug Administration, Silver Spring, MD, United States.
Objective:
To determine whether visual aids help people recall quantitative efficacy information in direct-to-consumer (DTC) prescription drug advertisements, and if so, which types of visual aids are most helpful.
Methods:
Individuals diagnosed with high cholesterol (n=2504) were randomized to view a fictional DTC print or television advertisement with no visual aid or one of four visual aids (pie chart, bar chart, table, or pictograph) depicting drug efficacy. We measured drug efficacy and risk recall, drug perceptions and attitudes, and behavioral intentions.
Results:
For print advertisements, a bar chart or table, compared with no visual aid, elicited more accurate drug efficacy recall. The bar chart was better at this than the pictograph and the table was better than the pie chart. For television advertisements, any visual aid, compared with no visual aid, elicited more accurate drug efficacy recall. The bar chart was better at this than the pictograph or the table.
Conclusion:
Visual aids depicting quantitative efficacy information in DTC print and television advertisements increased drug efficacy recall, which may help people make informed decisions about prescription drugs.
Practice Implications:
Adding visual aids to DTC advertising may increase the public's knowledge of how well prescription drugs work.
