Brittany Lemmon, Andrea Gil, Aviva A Musicus, Marissa G Hall, Christina A Roberto, Jennifer Falbe
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引用次数: 0
Abstract
Introduction: Restaurant menu added-sugar warning labels have the potential to reduce added-sugar consumption. Label efficacy depends on noticeability. This study aimed to assess which design elements improve noticeability and recognizability and also assessed behavioral response to the labels.
Study design: An online randomized experiment was used.
Setting/participants: A national sample of adults (N=4,083) was recruited to approximate U.S. distributions of sex, age, race, ethnicity, and education.
Intervention: A pretest-determined triangle shape was used for the label icon in the main experiment. The main experiment used a 3 × 2 × 2 × 2 factorial design to test label type (icon-plus-text versus boxed icon-only versus icon-only label), color (red versus black), size (150% vs 100% of menu text height), and placement (right versus left side of item name). Participants viewed fast-food and full-service restaurant menus displaying the assigned label next to high-added-sugar items (containing >50% of the daily recommended limit).
Main outcome measures: Noticing a high-added-sugar label and recognizing one's assigned label among other labels were assessed and analyzed in 2024. Menu-ordering behaviors were also examined.
Results: Compared with icon-only labels, icon-plus-text labels increased the probability of noticing and recognizing high-added-sugar labels by 508% (7% vs 44%) and 263% (23% vs 82%) (ps<0.001), respectively. Red color increased noticing by 16% (p=0.020) and recognition by 20% (p<0.001) compared with black color. Larger height increased recognition by 13% (p=0.001). For icon-only labels, right placement increased noticing by 59% (p=0.020). Icon-plus-text labels reduced the probability of ordering a high-added-sugar item by 11% and the amount of added sugar ordered by 10.5 g (ps<0.001) compared with icon-only labels.
Conclusions: Icon-plus-text labels were substantially more noticeable as high-added-sugar labels, recognizable, and efficacious at reducing the amount of added sugar ordered than icon-only labels. To a lesser extent, red color, larger labels, and right placement additionally improved performance, especially for icon-only designs, although they did not improve efficacy to a level similar to that of icon-plus-text labels.
Trial registration: This trial is registered at AsPredicted.org (Number 156625) and ClinicalTrials.gov (NCT0620491).
期刊介绍：
The American Journal of Preventive Medicine is the official journal of the American College of Preventive Medicine and the Association for Prevention Teaching and Research. It publishes articles in the areas of prevention research, teaching, practice and policy. Original research is published on interventions aimed at the prevention of chronic and acute disease and the promotion of individual and community health.
Of particular emphasis are papers that address the primary and secondary prevention of important clinical, behavioral and public health issues such as injury and violence, infectious disease, women''s health, smoking, sedentary behaviors and physical activity, nutrition, diabetes, obesity, and substance use disorders. Papers also address educational initiatives aimed at improving the ability of health professionals to provide effective clinical prevention and public health services. Papers on health services research pertinent to prevention and public health are also published. The journal also publishes official policy statements from the two co-sponsoring organizations, review articles, media reviews, and editorials. Finally, the journal periodically publishes supplements and special theme issues devoted to areas of current interest to the prevention community.
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