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. 2001 Jan;91(1):112–117. doi: 10.2105/ajph.91.1.112

Pricing and promotion effects on low-fat vending snack purchases: the CHIPS Study.

S A French 1, R W Jeffery 1, M Story 1, K K Breitlow 1, J S Baxter 1, P Hannan 1, M P Snyder 1
PMCID: PMC1446491  PMID: 11189801

Abstract

OBJECTIVES: This study examined the effects of pricing and promotion strategies on purchases of low-fat snacks from vending machines. METHODS: Low-fat snacks were added to 55 vending machines in a convenience sample of 12 secondary schools and 12 worksites. Four pricing levels (equal price, 10% reduction, 25% reduction, 50% reduction) and 3 promotional conditions (none, low-fat label, low-fat label plus promotional sign) were crossed in a Latin square design. Sales of low-fat vending snacks were measured continuously for the 12-month intervention. RESULTS: Price reductions of 10%, 25%, and 50% on low-fat snacks were associated with significant increases in low-fat snack sales; percentages of low-fat snack sales increased by 9%, 39%, and 93%, respectively. Promotional signage was independently but weakly associated with increases in low-fat snack sales. Average profits per machine were not affected by the vending interventions. CONCLUSIONS: Reducing relative prices on low-fat snacks was effective in promoting lower-fat snack purchases from vending machines in both adult and adolescent populations.

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Selected References

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  1. Allred J. B. Too much of a good thing? An overemphasis on eating low-fat foods may be contributing to the alarming increase in overweight among US adults. J Am Diet Assoc. 1995 Apr;95(4):417–418. doi: 10.1016/s0002-8223(95)00111-5. [DOI] [PubMed] [Google Scholar]
  2. Devaney B. L., Gordon A. R., Burghardt J. A. Dietary intakes of students. Am J Clin Nutr. 1995 Jan;61(1 Suppl):205S–212S. doi: 10.1093/ajcn/61.1.205S. [DOI] [PubMed] [Google Scholar]
  3. French S. A., Jeffery R. W., Story M., Hannan P., Snyder M. P. A pricing strategy to promote low-fat snack choices through vending machines. Am J Public Health. 1997 May;87(5):849–851. doi: 10.2105/ajph.87.5.849. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. French S. A., Story M., Hannan P., Breitlow K. K., Jeffery R. W., Baxter J. S., Snyder M. P. Cognitive and demographic correlates of low-fat vending snack choices among adolescents and adults. J Am Diet Assoc. 1999 Apr;99(4):471–475. doi: 10.1016/s0002-8223(99)00117-0. [DOI] [PubMed] [Google Scholar]
  5. French S. A., Story M., Jeffery R. W., Snyder P., Eisenberg M., Sidebottom A., Murray D. Pricing strategy to promote fruit and vegetable purchase in high school cafeterias. J Am Diet Assoc. 1997 Sep;97(9):1008–1010. doi: 10.1016/S0002-8223(97)00242-3. [DOI] [PubMed] [Google Scholar]
  6. Glanz K., Lankenau B., Foerster S., Temple S., Mullis R., Schmid T. Environmental and policy approaches to cardiovascular disease prevention through nutrition: opportunities for state and local action. Health Educ Q. 1995 Nov;22(4):512–527. doi: 10.1177/109019819502200408. [DOI] [PubMed] [Google Scholar]
  7. Glanz K., Mullis R. M. Environmental interventions to promote healthy eating: a review of models, programs, and evidence. Health Educ Q. 1988 Winter;15(4):395–415. doi: 10.1177/109019818801500403. [DOI] [PubMed] [Google Scholar]
  8. Hruban J. A. Selection of snack foods from vending machines by high school students. J Sch Health. 1977 Jan;47(1):33–37. doi: 10.1111/j.1746-1561.1977.tb01007.x. [DOI] [PubMed] [Google Scholar]
  9. Jeffery R. W., French S. A. Epidemic obesity in the United States: are fast foods and television viewing contributing? Am J Public Health. 1998 Feb;88(2):277–280. doi: 10.2105/ajph.88.2.277. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Jeffery R. W., French S. A., Raether C., Baxter J. E. An environmental intervention to increase fruit and salad purchases in a cafeteria. Prev Med. 1994 Nov;23(6):788–792. doi: 10.1006/pmed.1994.1135. [DOI] [PubMed] [Google Scholar]
  11. Kelder S. H., Perry C. L., Klepp K. I., Lytle L. L. Longitudinal tracking of adolescent smoking, physical activity, and food choice behaviors. Am J Public Health. 1994 Jul;84(7):1121–1126. doi: 10.2105/ajph.84.7.1121. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Norris J., Harnack L., Carmichael S., Pouane T., Wakimoto P., Block G. US trends in nutrient intake: the 1987 and 1992 National Health Interview Surveys. Am J Public Health. 1997 May;87(5):740–746. doi: 10.2105/ajph.87.5.740. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Rolls B. J., Miller D. L. Is the low-fat message giving people a license to eat more? J Am Coll Nutr. 1997 Dec;16(6):535–543. [PubMed] [Google Scholar]
  14. Shepherd R., Stockley L. Nutrition knowledge, attitudes, and fat consumption. J Am Diet Assoc. 1987 May;87(5):615–619. [PubMed] [Google Scholar]
  15. Story M., Hayes M., Kalina B. Availability of foods in high schools: is there cause for concern? J Am Diet Assoc. 1996 Feb;96(2):123–126. doi: 10.1016/S0002-8223(96)00039-9. [DOI] [PubMed] [Google Scholar]
  16. Truswell A. S., Darnton-Hill I. Food habits of adolescents. Nutr Rev. 1981 Feb;39(2):73–88. doi: 10.1111/j.1753-4887.1981.tb06736.x. [DOI] [PubMed] [Google Scholar]
  17. Wilbur C. S., Zifferblatt S. M., Pinsky J. L., Zifferblatt S. Healthy vending: a cooperative pilot research program to stimulate good health in the marketplace. Prev Med. 1981 Jan;10(1):85–93. doi: 10.1016/0091-7435(81)90009-8. [DOI] [PubMed] [Google Scholar]

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