A traffic light food labeling intervention increases consumer awareness of health and healthy choices at the point-of-purchase |
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Authors: | Lillian Sonnenberg Emily Gelsomin Douglas E. Levy Jason Riis Susan Barraclough Anne N. Thorndike |
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Affiliation: | 1. Massachusetts General Hospital, 165 Cambridge St., Suite 402, Boston, MA 02114, USA;2. Mongan Institute for Health Policy, Massachusetts General Hospital, 50 Staniford St., Boston, MA 02114, USA;3. Harvard Business School, Boston, MA 02163, USA;4. Massachusetts General Hospital, 55 Fruit St., Boston, MA 02114, USA;5. Harvard Medical School, General Medicine Division, Massachusetts General Hospital, 50 Staniford St., Boston, MA 02114, USA |
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Abstract: | ObjectiveWe surveyed customers in a hospital cafeteria in Boston, Massachusetts before and after implementation of traffic light food labeling to determine the effect of labels on customers' awareness and purchase of healthy foods.MethodsCafeteria items were identified as red (unhealthy), yellow (less healthy), or green (healthy). Customers were interviewed before (N = 166) and after (N = 223) labeling was implemented. Each respondent was linked to cash register data to determine the proportion of red, yellow, and green items purchased. Data were collected from February–April 2010. We compared responses to survey questions and mean proportion of red, yellow, and green items per transaction between customers interviewed during baseline and customers interviewed during the intervention. Survey response rate was 60%.ResultsComparing responses during labeling intervention to baseline, more respondents identified health/nutrition as an important factor in their purchase (61% vs. 46%, p = 0.004) and reported looking at nutrition information (33% vs. 15%, p < 0.001). Respondents who noticed labels during the intervention and reported that labels influenced their purchases were more likely to purchase healthier items than respondents who did not notice labels (p < 0.001 for both).ConclusionTraffic light food labels prompted individuals to consider their health and to make healthier choices at point-of-purchase. |
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Keywords: | Nutrition labeling Obesity Food labeling |
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